in the data center you're dealing with things at the microsc or millisecond scale uh when you move out to the edges of the network you're dealing with seconds and minutes

Disable all observers in your test suite by default. They should not be complicating your model tests because they should have separate concerns anyway. You don't need to unit test that observers actually fire, because ActiveRecord's test suite does that, and your integration tests will cover it.

We want users to unsubscribe to messages they don’t want; we don’t want them to mark them as spam and hurt the reputation of the sender. We have seen by implementing this unsubscribe affordance in the UI that spam marks go down and in some cases are being reduced by 30 to 40%.

how exactly has Europe managed to avoid an American style opioid crisis surprisingly it 00:06:18 turns out we can thank authentic Afghan heroin for the relative lack of deaths

What are some of the best practices for kids’ UX design?

Well, here’s a non-recursive solution in which the main commands appear only once:

Duplicating non-trivial code in both the if and in the else could create unnecessary issues.

That helps us keep GitLab simple as long as we can.

I feel we need a agreeable definition of work-items. It is getting confusing already. If the goal is to avoid confusion then exceptions must be avoided.

We want to evolve the API without unnecessary versioning. To be able to do that, the consumer should

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.

MELODIC STRUCTURES»

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.

we propose five cornerstones that help deal with the highlighted issues and categorize unintended consequences.

Conventions are good, but they are very limited: enforce them too little and the programmer becomes coupled to the code—no one will ever understand what they meant once they are gone. Enforce too much and you will have hour-long debates about every space and colon (true story.) The “habitable zone” is very narrow and easy to miss.

your cognitive load increases with the level of indentation. 1 2 3 4 5 6 7 8 9 10 if r.Method == "GET" { if r.Header.Get("X-API-KEY") == key { // ok return nil }else{ return errors.New("Key is not valid") } } else { return errors.New("Invalid Method") }

Avoid indentation levels, If you find yourself with more than 3, you should create a function.

The rules recorded in natural language are readable not only by humans but also by the computer and therefore no longer need to be programmed by a software developer. This task is now taken over by openVALIDATION.

This clearly violates DRY, which is the reason why OP asked this question in the first place

It appears redundant, and my goal of using $ref is to avoid repeating definitions.

OAS 3.1 uses all of JSON Schema draft 2020-12 including unevaluatedProperties. You won't find direct references to unevealuatedProperties in the OAS spec because it links to the JSON Schema spec instead of duplicating it's contents.

Multiple different people have been discussing multiple different problems, and asking for examples of the other problems, talking past each other and generally this thread got to an unreadable point due to this confusion.

Interestingly, Rails doesn't see this in their test suite because they set this value during setup:

Overriding the ActiveStorage controllers to add authentication or customize behavior is a bit tedious because it requires either: using custom routes, which means losing the nice url helpers provided by active storage copy pasting the routes in the application routes.rb, which is not very DRY.

Here's another convenient use of try_files, as unconditional redirects to named locations. The named locations are effectively acting as subroutines, saving duplication of code.

For example, suppose your API returns a 401 Unauthorized status code with an error description like The access token is expired. In this case, it gives information about the token itself to a potential attacker. The same happens when your API responds with a 403 Forbidden status code and reports the missing scope or privilege.

I am firmly convinced that asserting on the state of the interface is in every way superior to asserting on the state of your model objects in a full-stack test.

Use this to load modules whose location is specified in the paths section of tsconfig.json when using webpack. This package provides the functionality of the tsconfig-paths package but as a webpack plug-in. Using this plugin means that you should no longer need to add alias entries in your webpack.config.js which correspond to the paths entries in your tsconfig.json. This plugin creates those alias entries for you, so you don't have to!

The declarations you make in the tsconfig.json are re-stated in the webpack.config.js. Who wants to maintain two sets of code where one would do? Not me.

When I look at the tsconfig.json and the webpack.config.js something occurs to me: I don't like to repeat myself. As well as that, I don't like to repeat myself. It's so... Repetitive.

Unfortunately, it's too late to make the question more specific as this would invalidate some of the (good) answers.

The best way to do this is to derive the type Format from a value like an array which contains all of the Format literals.

That should work as expected and not be too verbose (or at least it doesn't repeat string literals anywhere)

My question is specifically if there is a way to do user defined type guards using the type itself

if x.strip('%').isnumeric(): return float(x.strip('%'))/100

HTTP REST seems like an "out of external dependency" way to go.

The idea is to avoid additional dependency if it's possible.

Rather than write new tooling we decided to take advantage of tooling we had in place for our unit tests. Our unit tests already used FactoryBot, a test data generation library, for building up test datasets for a variety of test scenarios. Plus, we had already built up a nice suite of helpers that we coud re-use. By using tools and libraries already a part of the backend technology’s ecosystem we were able to spend less time building additional tooling. We had less code to maintain because of this and more time to work on solving our customer’s pain points.

These tests should be isolated as much as possible. For example, model methods that don’t do anything with the database shouldn’t need a DB record. Classes that don’t need database records should use stubs/doubles as much as possible.

A common cause of a large number of created factories is factory cascades, which result when factories create and recreate associations.

:js is particularly important to avoid. This must only be used if the feature test requires JavaScript reactivity in the browser. Using a headless browser is much slower than parsing the HTML response from the app.

Use Factory Doctor to find cases where database persistence is not needed in a given test.

Do not test the internal implementation of the child components:

Another common gotcha is that the specs end up verifying the mock is working. If you are using mocks, the mock should support the test, but not be the target of the test.

Don’t test the library

Testing the hasMetricTypes computed prop would seem like a given here. But to test if the computed property is returning the length of metricTypes, is testing the Vue library itself. There is no value in this, besides it adding to the test suite.

One of the consequences (although arguably not the primary motivation) of DRY is that you tend to end up with chunks of complex code expressed once, with simpler code referencing it throughout the codebase. I can't speak for anyone else, but I consider it a win if I can reduce repetition and tuck it away in some framework or initialisation code. Having a single accessor definition for a commonly used accessor makes me happy - and the new Object class code can be tested to hell and back. The upshot is more beautiful, readable code.

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.

the problem is that I write a lot of these emails and they are a waste of my and everyone elses time

[gripe]Email is supposed to be a text-only medium. I can concede a need for rich text - the occasional bold or italic - but background pictures are just needless bloat.[/gripe]

But more so, external style cannot be applied to a subsection of a web page unless they force it into an iframe, which has all sorts of issues of it's own which is why external CSS is usually ignored. Inline CSS is often stripped by the tag strippers who don't want you turning things on or off... and media queries shouldn't even play into it since the layout should be controlled by the page it's being shown inside (for webmail) or the client itself, NOT your mail.

Whilst I realize the artsy fartsy types get a raging chodo over their goofy PSD based layout asshattery

Perhaps the most impressive part of the entire email is the fallback it used for non-WebKit emails —a beautiful grid layout of the carousel that didn’t hide or duplicate any content!

They're less likely to go into the "Promotions" tab in Gmail (used by ~16% of all email users), for the same reasons above. From my testing, the plain emails typically end up in the Updates tab and some times even in the primary tab. Of course, the text in the email also affects this.

You can use a free spam checker to validate this by testing plain and designed emails.

You'll have to use <table> tags—a method long buried by web developers

While it’s not quite completely table-free, I’ve managed to get The Intermittent Newsletter down to a single table—one that’s not even visible to non-Microsoft email clients. Along the way, I made an effort to make The Intermittent Newsletter accessible to more readers.

Here are my thoughts: making vim startup time shorter is GOOD added complexity - BAD my main concern is with the complexity that gets added to get startup time improvements. User has to tag scripts, and then manually BundleBind to get scripts loaded. This seems like too much hassle(manual involvement) to me. Fixing 1 time thing (startup) we're adding many more (like BundleBinding required scripts once they're used) For instance in my case i don't start Vim often because i'm using --remote-tab-silent option. So i'll get no benefit along with complexity (

I find it convenient to change proxy and other settings through gui window by right-clicking on launcher icon on my desktop. I mostly start slack by clicking desktop launcher, but also want to be able to start it from command line in some cases.

Or even a simple 1-liner in the Contract that references an AR Model so you don't have to rewrite the validations again in that contract, or have to choose between writing the validations once either in the contract there or in the AR Model?

Simplicity is better than anything.

The customer overspecified the requirements and now we're contractually required to build it this way. Does he think he's an engineer?

The number one problem that I see developers have when practicing test-first development that impedes them from refactoring their code is that they over-specify behavior in their tests. This leads developers to write more tests than are needed, which can become a burden when refactoring code.

Write modules quickly, to meet your needs, with just a few tests for compliance. Avoid extensive specifications.

Write modules that do one thing well. Write a new module rather than complicate an old one.

The elimination of what is arguably the biggest monoculture in the history of software development would mean that we, the community, could finally take charge of both languages and run-times, and start to iterate and grow these independently of browser/server platforms, vendors, and organizations, all pulling in different directions, struggling for control of standards, and (perhaps most importantly) freeing the entire community of developers from the group pressure of One Language To Rule Them All.

JavaScript needs to fly from its comfy nest, and learn to survive on its own, on equal terms with other languages and run-times. It’s time to grow up, kid.

If JavaScript were detached from the client and server platforms, the pressure of being a monoculture would be lifted — the next iteration of the JavaScript language or run-time would no longer have to please every developer in the world, but instead could focus on pleasing a much smaller audience of developers who love JavaScript and thrive with it, while enabling others to move to alternative languages or run-times.

This is a copy of the "AMD" document in the repo, kept here to maintain historical links. If this document differs from the one in the repo, the repo version is the correct one.

Before a bug can be fixed, it has to be understood and reproduced. For every issue, a maintainer gets, they have to decipher what was supposed to happen and then spend minutes or hours piecing together their reproduction. Usually, they can’t get it right, so they have to ask for clarification. This back-and-forth process takes lots of energy and wastes everyone’s time. Instead, it’s better to provide an example app from the beginning. At the end of the day, would you rather maintainers spend their time making example apps or fixing issues?

always use real <label for="correct_input"> elements. Just that alone is a UX consideration all too many forms fail on

In production, you will never trigger one specific callback or a particular validation, only. Your application will run all code required to create a Song object, for instance. In Trailblazer, this means running the Song::Create operation, and testing that very operation with all its side-effects.

There’s no need to test controllers, models, service objects, etc. in isolation

Difficult enough to prove a worthy challenge, with an over-complexity that might have benefitted from a little self-restraint.

They help streamlining the control flow, and take away control code while providing you with an incredibly cool developer experience.

The idea of the script is this: most of the important logic runs in a subshell which is piped through tee and to a logfile, so I don't have to tee every single line of the main logic to get it all logged.

Why is all this interaction code better? Two reasons: One, you can reuse the FindAccount interaction in other places, like your API controller or a Resque task. And two, if you want to change how accounts are found, you only have to change one place.

Instead of trying to educate everyone on the complexities of copyright law, we’d rather make our intentions clear with this simple statement:

I have checked the following close stackoverflow sources : Relation passed to #or must be structurally compatible. Incompatible values: [:references]

${JSON.stringify(state)}

When Sapper renders a page on the server, it will attempt to serialize the resolved value (using devalue) and include it on the page, so that the client doesn't also need to call preload upon initialization.

This scenario demonstrates one drawback of CSS: With all the style rules that need to be applied to multiple elements on multiple pages, things can get pretty redundant. And redundancy can eat up your time and cause friction whenever you need to change a color, font, or any other style aspect across your site.

Custom properties allow a value to be stored in one place, then referenced in multiple other places.

Microbundle also outputs a modern bundle specially designed to work in all modern browsers. This bundle preserves most modern JS features when compiling your code, but ensures the result runs in 90% of web browsers without needing to be transpiled. Specifically, it uses preset-modules to target the set of browsers that support <script type="module"> - that allows syntax like async/await, tagged templates, arrow functions, destructured and rest parameters, etc. The result is generally smaller and faster to execute than the esm bundle

@monkeythedev I am curious how do you "organize" your work - You forked https://github.com/hperrin/svelte-material-ui and https://github.com/hperrin/svelte-material-ui is not very active. Do you plan an independent project ? I hope the original author would return at some times, if not, i'll see

Trapping focus correctly for a modal dialog requires a complex set of events and interaction patterns that we feel is best not duplicated within the logic of this component.

It is important to notice that if you are planning on making your application a PWA, you don’t have to rewrite all the logic.

By using deploy keys, you don’t have to set up a fake user account.

Take responsibility for your outgoing network traffic If you install software that interacts with other sites over the network, you should be aware how it works and what kind of traffic it generates. If it has the potential to make thousands of requests to other sites, make sure it uses an HTTP cache to prevent inflicting abuse on other sites.

It is not appropriate to use these document types for live content. These are made available only for download, to support local use in development, evaluation, and validation tools. Using these versions directly from the W3C server could cause automatic blockage, preventing them from loading. If it is necessary to use schemata in content, follow guidelines to avoid excessive DTD traffic. For instance, use caching proxies to avoid fetching the schema each time it is used, or ensure software uses a local cache, such as with XML catalogs.

Instead of calling prepare twice to get value from data.

but the design pattern is so simple that it takes hardly any effort to implement it on any existing reducer, so I rejected abstraction for abstraction's sake.

Adding checks for bracket[3] syntax as opposed to dot.3 syntax adds a lot of complexity, and has consciously been avoided.

Sometimes we can’t implement a solution that’s fully spec-compliant, and in those cases using a polyfill might be the wrong answer. A polyfill would translate into telling the rest of the codebase that it’s okay to use the feature, that it’ll work just like in modern browsers, but it might not in edge cases.

Once again, this isn’t good or bad, it’s just the most efficient way to create something that is similar to something else

One of the primary tasks of engineers is to minimize complexity. JSX changes such a fundamental part (syntax and semantics of the language) that the complexity bubbles up to everything it touches. Pretty much every pipeline tool I've had to work with has become far more complex than necessary because of JSX. It affects AST parsers, it affects linters, it affects code coverage, it affects build systems. That tons and tons of additional code that I now need to wade through and mentally parse and ignore whenever I need to debug or want to contribute to a library that adds JSX support.

The reason why we don't just create a real DOM tree is that creating DOM nodes and reading the node properties is an expensive operation which is what we are trying to avoid.

“Complexity cloaks Catastrophe”

This proposal simplifies how React.createElement works and ultimately lets us remove the need for forwardRef.

Note how we have to duplicate the code between these two lifecycle methods in class. This is because in many cases we want to perform the same side effect regardless of whether the component just mounted, or if it has been updated. Conceptually, we want it to happen after every render — but React class components don’t have a method like this. We could extract a separate method but we would still have to call it in two places.

Transparent debugging: a <div> is just a div.

many CDNs nowadays ultimately source from npm (before caching the JavaScript on their own edge servers). So you'll be guaranteed to have the same library version on the CDN as on npm

There's no way to change style incapsulation method without patching the compiler, and this means maintaing a fork, which is not desirable.

Lets not extend the framework with yet another syntax

Part of the functionality that is returned are event handlers. I'd like to avoid needing to manually copy the events over one by one so the hook implementation details are hidden.

To learn about canceling fetch requests, search the internet for

Eliminating needless classes frees up operating memory on the computer—and bandwidth in your head.

The alternative is to duplicate markup inline:

Do not include the same information in multiple places. Link to a SSOT instead.

Having a knowledge base in any form that is separate from the documentation would be against the docs-first methodology because the content would overlap with the documentation.

New information that would be useful toward the future usage or troubleshooting of GitLab should not be written directly in a forum or other messaging system, but added to a docs MR and then referenced, as described above.

When you encounter new information not available in GitLab’s documentation (for example, when working on a support case or testing a feature), your first step should be to create a merge request (MR) to add this information to the docs. You can then share the MR in order to communicate this information.

If the answer to a question exists in documentation, share the link to the docs instead of rephrasing the information.

There is a temptation to summarize the information on another page. This will cause the information to live in two places. Instead, link to the SSOT and explain why it is important to consume the information

At GitLab, we have so many product changes in our monthly releases that we can’t afford to continuously update multiple types of information. If we have multiple types, the information will become outdated.

RDFa is intended to solve the problem of marking up machine-readable data in HTML documents. RDFa provides a set of HTML attributes to augment visual data with machine-readable hints. Using RDFa, authors may turn their existing human-visible text and links into machine-readable data without repeating content.