I think the only purpose of this is to detain programmers from doing anything a non-Microsoft way.

The distinction doesn't refer to the files _contents_ but how to the file is _treated_ when it is being read or written. In "rb"/"wb" modes files are left how they are, in "r"/"w" modes Windows programmers get line ends "\r\n" translated into "\n" what disturbs file positions and string lengths.

Dividing files into "text" and "binary" is the archetype misdesign in the operating system you use

Ruby 2.5+ If your substring is at the beginning of in the end of a string, then Ruby 2.5 has introduced the methods for this: delete_prefix for removing a substring from the beginning of the string delete_suffix for removing a substring from the end of the string

I understand Duo follows the spec and attempts to make life easier by giving users the full 30 seconds, but unfortunately service providers don’t honor that recommendation, which leads to lockouts and a bunch of calls to our 1st line teams. You can’t tell users to stop using {platform}, but we can tell them to switch TOTP providers.

We recommend using both an issuer label prefix and an issuer parameter, described below.

The threat is that you're posting a secret key to a third party which violates a dozen of security best practices, nullifies the assumption of the key being "secret" and most likely violates your organization's security policy. In authentication all the remaining information can be guessed or derived from other sources - for example Referrer header in case of Google - and this is precisely why secrets should be, well, secret.

The lawsuit against OpenAI claims the three authors “did not consent to the use of their copyrighted books as training material for ChatGPT. Nonetheless, their copyrighted materials were ingested and used to train ChatGPT.”

One federal judge in the Northern District of Texas issued a standing order in late May after Schwartz’s situation was in headlines that anyone appearing before the court must either attest that “no portion of any filing will be drafted by generative artificial intelligence” or flag any language that was drafted by AI to be checked for accuracy. He wrote that while these “platforms are incredibly powerful and have many uses in the law,” briefings are not one of them as the platforms are “prone to hallucinations and bias” in their current states.

New York-based startup DoNotPay created an AI-based way for people to contest traffic tickets—a user would wear smart glasses that would feed it information to say in court generated by AI—but before the creator could introduce it in court, he said he got threats from multiple bar associations about “unauthorized practice of law,”

he had used ChatGPT to conduct legal research for the court filing that referenced the cases and that the artificial intelligence tool assured him the cases were real.

a = A.arel_table b = B.arel_table c = C.arel_table a .join(b) .on(a[:id].eq(b[:a_id])) .join(c, Arel::Nodes::OuterJoin) .on(b[:id].eq(c[:b_id])).to_sql

But there is no absolute reason to use JOIN LATERAL (...) ON TRUE because you could just write it as a CROSS JOIN LATERAL instead

If you want to return a NULL-extended row in the case where the lateral join returns no rows, then you would use LEFT JOIN LATERAL (...) ON TRUE. Any condition other than TRUE is not necessary, as you could have just wrote it into the subquery itself

The way to do this with Capybara is documented on StackOverflow but, unfortunately, the answer there is buried in a little too much noise. I decided to create my own tiny noise-free blog post that contains the answer. Here it is:

I commonly find myself wanting to assert that a certain field contains a certain value.

How we arrived in a post-truth era, when “alternative facts” replace actual facts, and feelings have more weight than evidence.Are we living in a post-truth world, where “alternative facts” replace actual facts and feelings have more weight than evidence? How did we get here? In this volume in the MIT Press Essential Knowledge series, Lee McIntyre traces the development of the post-truth phenomenon from science denial through the rise of “fake news,” from our psychological blind spots to the public's retreat into “information silos.”What, exactly, is post-truth? Is it wishful thinking, political spin, mass delusion, bold-faced lying? McIntyre analyzes recent examples—claims about inauguration crowd size, crime statistics, and the popular vote—and finds that post-truth is an assertion of ideological supremacy by which its practitioners try to compel someone to believe something regardless of the evidence. Yet post-truth didn't begin with the 2016 election; the denial of scientific facts about smoking, evolution, vaccines, and climate change offers a road map for more widespread fact denial. Add to this the wired-in cognitive biases that make us feel that our conclusions are based on good reasoning even when they are not, the decline of traditional media and the rise of social media, and the emergence of fake news as a political tool, and we have the ideal conditions for post-truth. McIntyre also argues provocatively that the right wing borrowed from postmodernism—specifically, the idea that there is no such thing as objective truth—in its attacks on science and facts.McIntyre argues that we can fight post-truth, and that the first step in fighting post-truth is to understand it.

If Arel does not have the predicate you are looking for, consider monkey patching it:

Please do not use the issue tracker for personal support requests. Stack Overflow or GitHub Discussions is a better place for that where a wider community can help you!

Please consider adding a branch with a failing spec describing the problem.

File an issue if a bug is caused by Ransack, is new (has not already been reported), and can be reproduced from the information you provide.

Is the column a boolean column? (i.e. what does User.columns_hash[:admin_created].type return?)

args: [:parent, :ransacker_args] do |parent, args|

Arel::Nodes::InfixOperation.new('->>', parent.table[:properties], 'link_type')

A timestamp like 2019-07-18 01:21:29.826484 will be truncated to 2019-07-18. But for your Rails application 2019-07-18 01:21:29.826484 is 2019-07-17 22:21:29.826484 at your time zone (GMT -03:00). So it should be truncated to 2019-07-17 instead.So, you should convert the timestamp to your current Rails time zone before extracting the date.

ActiveStorage::LogSubscriber.detach_from :active_storage

Rails' default approach to log everything is great during development, it's terrible when running it in production. It pretty much renders Rails logs useless to me.

Lograge is an attempt to bring sanity to Rails' noisy and unusable, unparsable and, in the context of running multiple processes and servers, unreadable default logging output.

But in almost all English sentences containing »there is«, these words do not mean »in this place is« but »it exists«. But the German words »da ist« do not have the meaning »it exists«. They only mean »in this place is«.

This lets your test express a concept (similar to a trait), without knowing anything about the implementation: FactoryBot.create(:car, make: 'Saturn', accident_count: 3) FactoryBot.create(:car, make: 'Toyota', unsold: true) IMO, I would stick with traits when they work (e.g. unsold, above). But when you need to pass a non-model value (e.g. accident_count), transient attributes are the way to go.

You can also use the ActiveAdmin::FormBuilder as builder in your Formtastic Form for use the same helpers are used in the admin file:

semantic_form_for [:admin, @post], builder: ActiveAdmin::FormBuilder

I really feel the game is a strong 9 but I’m giving it a 10 to offset the trolls.

We all like games with a wide variety of resources, but most board games or card games never seem to have all that many.  So let's do a comparison with popular games out there.

Making MoneySerializer reloadable would be confusing, because reloading an edited version would have no effect on that class object stored in Active Job.

There, the module object stored in MyDecoration by the time the initializer runs becomes an ancestor of ActionController::Base, and reloading MyDecoration is pointless, it won't affect that ancestor chain.

As this answer warns placing the include at the top level pollutes the Object namespace. Instead, I should have written

Shareable Code

Due to specific circumstances, there may be some devices that are incompatible even if they meet the specification requirements above.

Excellent, underrated answer!

As far as I see the current version of arel gem is not support FROM keyword for the sql query. You can generate a query using the SET, and WHERE keywords only,

I’ve heard-suggested that ActiveSupport, which does a ton of monkey-patching of core classes, would make potentially-nice refinements. I don’t hold this opinion strongly, but I disagree with that idea. A big value proposition of ActiveSupport is that it is “omnipresent” and sets a new baseline for ruby behaviors - as such, being global really makes the most sense. I don’t know that anyone would be pleased to sprinkle using ActiveSupport in all their files that use it - they don’t even want to THINK about the fact that they’re using it.

Refinements themselves present a significant hurdle to adoption by virtue of their limitations and overall introduction of conceptual complexity. So it’s a tough sell to recommend this for anything outside of personal projects or places with incredibly strong esoteric Ruby knowledge (like, say, hidden away within Rails).

Let’s check out what the refinement approach looks like and why I consider it the best way to implement conversion wrappers.

under the name “conversion functions.” These exist in Ruby’s standard library - for example Array() is one that you’re likely to see in real code.

in the 10 years since they have been a part of Ruby, real life usages are astonishingly rare.

What I do care about, though, is that we might start to accept and adopt opinions like “that feature is bad”, or “this sucks”, without ever pausing to question them or explore the feature ourselves.

Please – make a little time to explore Ruby. Maybe you’ll discover something simple, or maybe something wonderful.

If we hand most, if not all responsibility for that exploration to the relatively small number of people who talk at conferences, or have popular blogs, or who tweet a lot, or who maintain these very popular projects and frameworks, then that’s only a very limited perspective compared to the enormous size of the Ruby community.

I think we have a responsibility not only to ourselves, but also to each other, to our community, not to use Ruby only in the ways that are either implicitly or explicitly promoted to us, but to explore the fringes, and wrestle with new and experimental features and techniques, so that as many different perspectives as possible inform on the question of “is this good or not”.

If you’ll forgive the pun, there are no constants in programming – the opinions that Rails enshrines, even for great benefit, will change, and even the principles of O-O design are only principles, not immutable laws that should be blindly followed for the rest of time. There will be other ways of doing things. Change is inevitable.

ON conflict (member_id) DO UPDATE SET

rank() OVER (ORDER BY

What is the Docker host filesystem owner matching problem?

Using Time.now (which returns the wall-clock time) as base-lines has a couple of issues which can result in unexpected behavior. This is caused by the fact that the wallclock time is subject to changes like inserted leap-seconds or time slewing to adjust the local time to a reference time. If there is e.g. a leap second inserted during measurement, it will be off by a second. Similarly, depending on local system conditions, you might have to deal with daylight-saving-times, quicker or slower running clocks, or the clock even jumping back in time, resulting in a negative duration, and many other issues. A solution to this issue is to use a different time of clock: a monotonic clock.

Certainly you could adapt the code to round rather than truncate should you need to; often I find truncation feels more natural as that is effectively how clocks behave.

xargs -n 1 -I% git push origin :refs/tags/%

First, although not directly relevant to the answer, it's important to remember that Git does not have remote tags. Git just has tags.

If you develop a pure frameworkless Ruby application or embed Ruby and don't need any of the listed integrations, you can depend on the airbrake-ruby gem and ignore this gem entirely.

Random::Formatter#from_set(set, n = 16) (or Random::Formatter#from_set(n = 16, set: …))

I think that alphabet is still the right word here, as it’s sort of the "term of art" for this sort of thing, although set is probably a good name as well.

What I have seen is situations where things were made horribly complicated to get around protections for which there was no need, and to try to guard the consistency of data structures that were horribly over-complicated and un-normalized.

Are protected members/fields really that bad? No. They are way, way worse. As soon as a member is more accessible than private, you are making guarantees to other classes about how that member will behave. Since a field is totally uncontrolled, putting it "out in the wild" opens your class and classes that inherit from or interact with your class to higher bug risk. There is no way to know when a field changes, no way to control who or what changes it. If now, or at some point in the future, any of your code ever depends on a field some certain value, you now have to add validity checks and fallback logic in case it's not the expected value - every place you use it. That's a huge amount of wasted effort when you could've just made it a damn property instead ;) The best way to share information with deriving classes is the read-only property: protected object MyProperty { get; } If you absolutely have to make it read/write, don't. If you really, really have to make it read-write, rethink your design. If you still need it to be read-write, apologize to your colleagues and don't do it again :) A lot of developers believe - and will tell you - that this is overly strict. And it's true that you can get by just fine without being this strict. But taking this approach will help you go from just getting by to remarkably robust software. You'll spend far less time fixing bugs.

Public and/or protected fields are bad because they can be manipulated from outside the declaring class without validation; thus they can be said to break the encapsulation principle of object oriented programming.

When you lose encapsulation, you lose the contract of the declaring class; you cannot guarantee that the class behaves as intended or expected.

Using a property or a method to access the field enables you to maintain encapsulation, and fulfill the contract of the declaring class.

It actually depends on if your class is a data class or a behaviour class.

Exposing properties gives you a way to hide the implementation. It also allows you to change the implementation without changing the code that uses it (e.g. if you decide to change the way data are stored in the class)

it still strikes me as something people believe in the abstract, rather than know from hard experience. I've always found that if you look behind/under widely held beliefs, you can find useful gems.

Python essentially doesn't have private methods, let alone protected ones, and it doesn't turn out to be that big a deal in practice.

Anything that isn't explicitly enforced by contract is vulnerable to misunderstandings. It's doing your teammates a great service, and reducing everyone's effort, by eliminating ambiguity and enforcing information flow by design.

Far more preferable is to minimize data structure so that it tends to be normalized and not to have inconsistent states. Then, if a member of a class is changed, it is simply changed, rather than damaged.

They are based on defensive coding carried to extremes.

Another point is that properties are good in that you can place breakpoints in them to capture getting/setting events and find out where they come from.

They sound like "argument by prestige". If MSDN says it, or some famous developer or author whom everybody likes says it, it must be so.

you nailed it! A consumer should only be able to set an object's state at initialization (via the constructor). Once the object has come to life, it should be internally responsible for its own state lifecycle. Allowing consumers to affect the state adds unnecessary complexity and risk.

to clarify, I am distinguishing between properties as representing state and methods representing actions

As soon as you make a member not-private, you are stuck with it, forever and ever. It's your public interface now.

also to clarify, by immutable I mean externally immutable - that is, consumers cannot affect the state. The class can internally affect its own state

Making a property writable adds an order of magnitude in complexity. In the real world it's definitely not realistic for every class to be immutable, but if most of your classes are, it's remarkably easier to write bug-free code. I had that revelation once and I hope to help others have it.

Have you ever: Been disappointed, surprised or hurt by a library etc. that had a bug that could have been fixed with inheritance and few lines of code, but due to private / final methods and classes were forced to wait for an official patch that might never come? I have. Wanted to use a library for a slightly different use case than was imagined by the authors but were unable to do so because of private / final methods and classes? I have.

Conversely, I've never in 16+ years of professional development regretted marking a method protected instead of private for reasons related to API safety

Let me preface this by saying I'm talking primarily about method access here, and to a slightly lesser extent, marking classes final, not member access.

Typical control-freak opinion.

I just wanted to tweak Java's BufferedReader to handle custom line delimiters. Thanks to private fields I have to clone the entire class rather than simply extending it and overriding readLine().

Practically speaking, if you can't think of a reason why it would be dangerous then theres more to be gained by opting for extensibility.

Also, people prefer association over inheritance so protected as default is difficult to perceive

I'm not saying never mark methods private. I'm saying the better rule of thumb is to "make methods protected unless there's a good reason not to".

Marking methods protected by default is a mitigation for one of the major issues in modern SW development: failure of imagination.

If it's dangerous, note it in the class/method Javadocs, don't just blindly slam the door shut.

I can't count the number of times I've been wrong about whether or not there will ever be a need to override a specific method I've written.

It often eliminates the only practical solution to unforseen problems or use cases.

When a developer chooses to extend a class and override a method, they are consciously saying "I know what I'm doing." and for the sake of productivity that should be enough. period.

member access

Been disappointed, surprised or hurt by a library etc. that was overly permissive in it's extensibility? I have not.

The old wisdom "mark it private unless you have a good reason not to" made sense in days when it was written, before open source dominated the developer library space and VCS/dependency mgmt. became hyper collaborative thanks to Github, Maven, etc. Back then there was also money to be made by constraining the way(s) in which a library could be utilized. I spent probably the first 8 or 9 years of my career strictly adhering to this "best practice". Today, I believe it to be bad advice. Sometimes there's a reasonable argument to mark a method private, or a class final but it's exceedingly rare, and even then it's probably not improving anything.

It is a type of class attribute (or class property, field, or data member).

The main thing to note here is that in the derived class, we need to be careful to repeat the protected modifier if this exposure isn’t intentional.

Derived classes need to follow their base class contracts, but may choose to expose a subtype of base class with more capabilities. This includes making protected members public:

TypeScript offers special syntax for turning a constructor parameter into a class property with the same name and value. These are called parameter properties

Member Visibility

The major use case of Reflect is to provide default forwarding behavior in Proxy handler traps. A trap is used to intercept an operation on an object — it provides a custom implementation for an object internal method. The Reflect API is used to invoke the corresponding internal method. For example, the code below creates a proxy p with a deleteProperty trap that intercepts the [[Delete]] internal method. Reflect.deleteProperty() is used to invoke the default [[Delete]] behavior on targetObject directly.

Reflection adds the ability to reverse-engineer classes, interfaces, functions, methods and extensions. Additionally, they offers ways to retrieve doc comments for functions, classes and methods.

What's the structure of the URL of a shared link?https://chat.openai.com/share/<conversation-ID>

If I continue the conversation after I create a shared link, will the rest of my conversation appear in the shared link?No. Think of a shared link as a snapshot of a conversation up to the point at which you generate the shared link. Once a shared link is created for a specific conversation or message, it will not include any future messages added to the conversation after the link was generated. This means that if you continue the conversation after creating the shared link, those additional messages will not be visible through the shared link.

The conversation will no longer be accessible via the shared link, but if a user imported the conversation into their chat history, deleting your link will not remove the conversation from their chat history.

Are shared links public? Who can access my shared links?Anyone who has access to a shared link can view and continue the linked conversation. We encourage you not to share any sensitive content, as anyone with the link can access the conversation or share the link with other people.

Shared links offer a new way for users to share their ChatGPT conversations, replacing the old and burdensome method of sharing screenshots.

it's not asking anymore of you than to just enjoy

Depends on the style guide you follow for your project. The popular Ruby Style Guide says to "Avoid using Perl-style special variables (like $:, $;, etc. ). They are quite cryptic and their use in anything but one-liner scripts is discouraged."

When I first got started with Ruby, I obviously thought that $LOAD_PATH was better. But once you've graduated from beginner status, I'd only use $LOAD_PATH if I was trying to make my code more readable to a beginner. Meh its a trade off.

The Ruby load path is very commonly seen written as $: , but just because it is short, does not make it better. If you prefer clarity to cleverness, or if brevity for its own sake makes you itchy, you needn't do it just because everyone else is. Say hello to ... $LOAD_PATH ... and say goodbye to ... # I don't quite understand what this is doing... $:

“So superior mechanically to other crowdsourced games, it was banned on Kickstarter and Gamefound!”

Mikitani

typical use would be to reference a json or jsonb column laterally from another table in the query's FROM clause.

Writing json_populate_record in the FROM clause is good practice, since all of the extracted columns are available for use without duplicate function calls.

Debug mode allows you to see only the data generated by your device while validating analytics and also solves the purpose of having separate data streams for staging and production (no more separate data streams for staging and production).

They create a lot of useful content on there site, which they are happy for users to copy and paste for use elsewhere. They wanted to know how often this was happening, on which pages, and what text.

but I literally posted a screenshot of it working. So you must be doing something wrong.

To use the tool, you need the following access: Viewer role for the Universal Analytics property Editor role for the Google Analytics 4 property After you've installed and activated the Google Sheets add-on (below), follow these steps: Import audience definitions from your Universal Analytics property to a Google Sheet. Decide how you want to export audiences from your Google Sheet to your Google Analytics 4 property (e.g., using the existing definition or modifying the definition first in the tool, then exporting). Export your audiences from the Google Sheet to your Google Analytics 4 property.

(New name for Collaborate permission.)

Effective permissions are the roles and data restrictions that a member is assigned via other resources (like the organization, a user group, or an account that includes the current property) plus all the direct permissions assigned explicitly for the current resource. Direct permissions are role and data restrictions that a member is assigned explicitly for the current resource (e.g., organization, account, property).

to recover loss of observability

Foreign companies selling into the U.S. are subject to sales tax regimes to the extent there is nexus with the state, which can be established, among other ways, through a physical contact with the state (payroll, property, agents, and inventory held under the Fulfillment by Amazon arrangement) or substantial sales exceeding economic thresholds enacted in light of the Wayfair decision.

Don’t confuse Consent Mode with Additional Consent Mode, a feature that allows you to gather consent for Google ad partners that are not yet part of the Transparency and Consent Framework but are on Google’s Ad Tech Providers (ATP) list.

Will not read or write first-party [analytics cookies]. Cookieless pings will be sent to Google Analytics for basic measurement and modeling purposes.

If a user denies consent, tags no longer store cookies but instead send signals to the Google Server as described in the next section. This prevents the loss of all information about visitors who deny consent and it enables Google Analytics 4 properties to model conversions as described in About modeled conversions.

By default, Google tags use automatic cookie domain configuration. Cookies are set on the highest level of domain possible. For example, if your website address is blog.example.com, cookies are set on the example.com domain.

This means that if cookie expiration is set to one week (604800 seconds), and a user visits using the same browser within five days, the cookie will be available for an additional week, and they will appear as the same visitor in your reports. If that same user instead visited after the original cookie had expired, a new cookie will be created, and their first and second visits will appear as coming from distinct visitors in your reports.

What we call the "super sidebar" will contain all the elements that pertain to moving around GitLab

There will no longer be a top bar

Dialog that is reasonably funny

layout

while I'm not as strongly against the above example code as the others, specifically because you did call it out as pseudocode and it is for illustrative purposes only, perhaps all of the above comments could be addressed by replacing your query = ... lines with simple query = // Insert case-sensitive/insensitive search here comments as that keeps the conversation away from the SQL injection topic and focuses on what you're trying to show. In other words, keep it on the logic, not the implementation. It will silence the critics.

I know this is an old question but I just want to comment here: To any extent email addresses ARE case sensitive, most users would be "very unwise" to actively use an email address that requires capitals. They would soon stop using the address because they'd be missing a lot of their mail. (Unless they have a specific reason to make things difficult, and they expect mail only from specific senders they know.) That's because imperfect humans as well as imperfect software exist, (Surprise!) which will assume all email is lowercase, and for this reason these humans and software will send messages using a "lower cased version" of the address regardless of how it was provided to them. If the recipient is unable to receive such messages, it won't be long before they notice they're missing a lot, and switch to a lowercase-only email address, or get their server set up to be case-insensitive.

This is insightful application of Postel's law en.wikipedia.org/wiki/Robustness_principle. It remains wrong to write software that assumes local parts of email addresses are case-insensitive, but yes, given that there is plenty of wrong software out there, it is also less than robust to require case sensitivity if you are the one accepting the mail.

If you're already using PostgreSQL anyway, just use citext as the type of the email_address column.

Solution: Store emails with case sensitivity Send emails with case sensitivity Perform internal searches with case insensitivity

Robustness principle suggests that we accept case sensitive emails

I'd phrase it stronger: "you're unsafe to treat email-addresses as case-sensitive manner"

So yes, the part before the "@" could be case-sensitive, since it is entirely under the control of the host system. In practice though, no widely used mail systems distinguish different addresses based on case.

In short, you are safe to treat email addresses as case-insensitive.

responded with typical self-effacing matter-of-factness

"Of course, there isn’t any 'God of the Internet.' The Internet works because a lot of people cooperate to do things together."

A flaw can become entrenched as a de facto standard. Any implementation of the protocol is required to replicate the aberrant behavior, or it is not interoperable. This is both a consequence of applying the robustness principle, and a product of a natural reluctance to avoid fatal error conditions. Ensuring interoperability in this environment is often referred to as aiming to be "bug for bug compatible".

Rose therefore recommended "explicit consistency checks in a protocol ... even if they impose implementation overhead".

However, some do differentiate between upper and lower case characters in the recipient part.

If you are storing email addresses then you probably should store them in their original case (the recipient at least) to be safe. However, always compare them case-insensitively in order to avoid duplicates.

Please can we (a) retain case information from the email address the student uses to set up their account (in case their mailbox is case sensitive), and use that when sending password reset emails, etc., but also (b) when checking credentials for login or setting up an account, treat the email address as non-case-sensitive. The upshot would be if someone registered with Student@City.ac.uk, all emails would go to Student@City.ac.uk, but the student would be able to log in with student@city.ac.uk, and if someone later tried to set up an account with student@city.ac.uk they'd be told that the user already exists.

Although there's an argument for keeping case sensitivity for the local mailbox (as they can be case sensitive, depending on how they're set up, though I haven't come across case sensitivity in university emails), the domain part of the email address is not case sensitive and should not be treated as such. Please can we (a) retain case information from the email address the student uses to set up their account (in case their mailbox is case sensitive), and use that when sending password reset emails, etc., but also (b) when checking credentials for login or setting up an account, treat the email address as non-case-sensitive. The upshot would be if someone registered with Student@City.ac.uk, all emails would go to Student@City.ac.uk, but the student would be able to log in with student@city.ac.uk, and if someone later tried to set up an account with student@city.ac.uk they'd be told that the user already exists.

However, it's difficult to rely on a case-sensitive email address in the real world because many systems (typically ones that have to handle data merging) don't preserve case. Notably systems that use email addresses for user IDs, or any system that has to collate data from multiple sources (CRMs, email broadcast systems, etc) will either normalise case or treat them case-insensitively.

However, for all practical purposes in the modern age, I believe you can consider email addresses to be case insensitive.