222 Matching Annotations
  1. Apr 2022
    1. the C standard — because that would be tremendously complicated, and tremendously hard to use

      "the C standard [... is] tremendously complicated, and tremendously hard to use [...] full of wrinkles and [...] complex rules"

    1. The easiest and simplest way to get out of a reading slump or to get into reading in the first place is to begin small. Novellas offer (almost) the sumptuousness and holisticness of novels. But they also don’t strain the mind too much because they are quick reads. Here are 10 short and easy to read books that will help beginners start reading. This list of novellas and short novels that are easy to slip into, not just because of their length but also because of the style of writing itself.
  2. Mar 2022
    1. The reason for the new name is that the "dist-upgrade" name was itself extremely confusing for many users: while it was named that because it was something you needed when upgrading between distribution releases, it sounded too much as though it was only for use in that circumstance, whereas in fact it's much more broadly applicable.
  3. Feb 2022
    1. Although COALESCE, GREATEST, and LEAST are syntactically similar to functions, they are not ordinary functions
  4. Jan 2022
    1. Seems easy, right? How about the below code, what will it print? new Promise((_, reject) => reject(new Error('woops'))). catch(error => { console.log('caught', err.message); }); It'll print out an unhandled rejection warning. Notice that err is not defined!
    1. Next, let’s say that your ticket is correct (so you made through security just fine!) and the gate number in your ticket says “Gate 24” but you walk to Gate 27. The attendant cannot authorize you to go through that gate because it’s not the right gate for your ticket.

      They have these mixed up! (Which is understandable, because 401 is misnamed "Unauthorized but should be named "Unauthenticated")

      Checking if authenticated (which, if it fails the check, should return 401 for authentication error) comes first,

      and then checking if authorized (which, if it fails the check, should return 403 for authorization error)

      See https://hyp.is/wRF7wHopEeynafOqKj81vw/stackoverflow.com/questions/3297048/403-forbidden-vs-401-unauthorized-http-responses

    2. In other words, an “incorrect ticket” is similar to messing up your credentials: wrong username and/or password and you receive back a 403 Forbidden. Using the correct credentials but trying to access a resource that is not allowed for those credentials returns you a 401 Unauthorized.

      They have these mixed up! (Which is understandable, because 401 is misnamed "Unauthorized but should be named "Unauthenticated")

      Checking if authenticated (which, if it fails the check, should return 401 for authentication error) comes first,

      and then checking if authorized (which, if it fails the check, should return 403 for authorization error)

      See for example https://www.loggly.com/blog/http-status-code-diagram/

    3. You can also think that 403 happens before 401, despite the natural number order: you will not receive a 401 until you resolve a 403.

      They have these mixed up! (Which is understandable, because 401 is misnamed "Unauthorized but should be named "Unauthenticated")

      Checking if authenticated (which, if it fails the check, should return 401 for authentication error) comes first,

      and then checking if authorized (which, if it fails the check, should return 403 for authorization error)

      See for example https://www.loggly.com/blog/http-status-code-diagram/

    4. These two sound pretty similar to me. And to make things even more confusing, 403 “Forbidden” says that the server refuses to “authorize” the request but it’s code 401 that is called “Unauthorized”. 😵
    1. There's a problem with 401 Unauthorized, the HTTP status code for authentication errors. And that’s just it: it’s for authentication, not authorization. Receiving a 401 response is the server telling you, “you aren’t authenticated–either not authenticated at all or authenticated incorrectly–but please reauthenticate and try again.” To help you out, it will always include a WWW-Authenticate header that describes how to authenticate.
    2. So, for authorization I use the 403 Forbidden response. It’s permanent, it’s tied to my application logic, and it’s a more concrete response than a 401. Receiving a 403 response is the server telling you, “I’m sorry. I know who you are–I believe who you say you are–but you just don’t have permission to access this resource. Maybe if you ask the system administrator nicely, you’ll get permission. But please don’t bother me again until your predicament changes.”
    3. I would expect that 401 to be named "Unauthenticated" and 403 to be named "Unauthorized". It is very confusing that 401, which has to do with Authentication,
    1. It’s important to understand that an implements clause is only a check that the class can be treated as the interface type. It doesn’t change the type of the class or its methods at all. A common source of error is to assume that an implements clause will change the class type - it doesn’t!
    1. Code that is per-component instance should go into a second <script> tag.

      But this seems to conflict with https://hyp.is/NO4vMmzVEeylBfOiPbtB2w/kit.svelte.dev/docs

      The load function is reactive, and will re-run when its parameters change, but only if they are used in the function.

      which seems to imply that load is not just run once for the component statically, but rather, since it can be reactive to:

      url, params, fetch, session and stuff

      may be sufficiently like a per-instance callback, that it could be used instead of onMount?

  5. Dec 2021
  6. Nov 2021
  7. Oct 2021
  8. Sep 2021
    1. Sanitary Tee and Wye are parts of the drain vent system. If you are doing plumbing works, you may have to use them in some sort. However, they look almost similar, and this confuses a lot of people. Especially to choose the one that best fits your drain system.
  9. www.dynare.org www.dynare.org
    1. Ease of Use Write your model almost as you would on paper and Dynare will take care of the rest!
    1. Notice that the plugin is placed in the resolve.plugins section of the configuration. tsconfig-paths-webpack-plugin is a resolve plugin and should only be placed in this part of the configuration. Don't confuse this with the plugins array at the root of the webpack configuration object.
    1. The question is similar but its in a Rails context. The solutions would answer my question, but I'm almost certain that he could probably leverage Arel to solve his problem. The question I posted was designed purely as a Ruby question so that it was easier to search for. You might want to suggest an edit of the title of his question because it didn't show up when I searched for a solution to my problem.
  10. Aug 2021
    1. I always had to set the height of them literally almost 50% taller than the content itself to accommodate for the innards growing when the form was submitted with errors (the error messaging expanded the height). If I didn’t, the submit button would get cut off making the form un-submittable.
    1. Now consider we want to handle numbers in our known value set: const KNOWN_VALUES = Object.freeze(['a', 'b', 'c', 1, 2, 3]) function isKnownValue(input?: string | number) { return typeof(input) === 'string' && KNOWN_VALUES.includes(input) } Uh oh! This TypeScript compiles without errors, but it's not correct. Where as our original "naive" approach would have worked just fine. Why is that? Where is the breakdown here? It's because TypeScript's type system got in the way of the developer's initial intent. It caused us to change our code from what we intended to what it allowed. It was never the developer's intention to check that input was a string and a known value; the developer simply wanted to check whether input was a known value - but wasn't permitted to do so.
  11. Jul 2021
    1. was due to a form that was submitted (ALWAYS SET THAT TYPE-PROPERTY ON YOUR BUTTONS!) after my onclick-event fired, but before my request had any chance to be completed.
  12. test-prof.evilmartians.io test-prof.evilmartians.io
    1. That's it! Just replace let! with let_it_be. That's equal to the before_all approach but requires less refactoring.
    2. That technique works pretty good but requires us to use instance variables and define everything at once. Thus it's not easy to refactor existing tests which use let/let! instead.
  13. Jun 2021
    1. I've seen (and fixed) Ruby code that needed to be refactored for the client objects to use the accessor rather than the underlying mechanism, even though instance variables aren't directly visible. The underlying mechanism isn't always an instance variable - it can be delegations to or manipulations of a class you're hiding behind a facade, or a session store with a particular format, or all kinds. And it can change. 'Self-encapsulation' can help if you need to swap a technology, a library, an object specification, etc.
    2. Also, Sandi Metz mentions this in POODR. As I recall, she also advocates wrapping bare instance variables in methods, even when they're only used internally. It helps avoid mad refactoring later.
    3. But sure, go ahead and enforce self-encapsulation if you like; it makes it easier to do memoization or whatever later on.
    1. I've never felt challenged by any of my teachers. All their curriculums I've laughed at. I run circles around my teachers and most of them hated me because I'd finish my work and I'm pretty sure they hated me. I remember this lady. What was her name? I don't remember her name, but she was redheaded with glasses. She fucking hated me, man, because I'd laugh at pretty much all her work. I'd finish it in seconds and she'd get so frustrated with me because she's like, "Ugh. What am I supposed to do with you?"

      Time in the US, School, Teachers

  14. May 2021
    1. Seamless transitions; changes made to the old repositories after they were migrated must be imported to the new monorepository.
    1. --tag-rename '':'my-module-' (the single quotes are unnecessary, but make it clearer to a human that we are replacing the empty string as a prefix with my-module-)
  15. Apr 2021
    1. In many computing contexts, "TTY" has become the name for any text terminal, such as an external console device, a user dialing into the system on a modem on a serial port device, a printing or graphical computer terminal on a computer's serial port or the RS-232 port on a USB-to-RS-232 converter attached to a computer's USB port, or even a terminal emulator application in the window system using a pseudoterminal device.

      It's still confusing, but this at least helps/tries to clarify.

    1. The terminal emulator process must also handle terminal control commands, e.g., for resizing the screen.
    1. 2 out of 3 people in my household do not find it easy to understand. Maybe that is is not representative, but keep in mind that something you yourself understand (or in this case think you understand) always seems easy.
    2. Notice the use of Enter key after backslash in the sed command.
    3. Although echo "$@" prints the arguments with spaces in between, that's due to echo: it prints its arguments with spaces as separators.

      due to echo adding the spaces, not due to the spaces already being present

      Tag: not so much:

      whose responsibility is it? but more: what handles this / where does it come from? (how exactly should I word it?)

    1. However, some users didn’t know that they could interact with and click on the text field. It looked like an empty box. The line affordance under the old text fields was not clear to some users. The line was confused with a divider.
    2. The label and input were confused with body text, especially in dense compositions.
    1. We are continuing an overhaul of our default startup editor in order to provide relevant extension-contributed tips and walkthroughs, intended to make both core VS Code features and extension contributions more approachable to new users.
  16. Mar 2021
    1. Not to be confused with tree (graph theory), a specific type of mathematical object.

      Confusing: https://en.wikipedia.org/wiki/Tree_(data_structure) says

      Not to be confused with tree (graph theory) "Tree (graph theory)"), a specific type of mathematical object. but https://en.wikipedia.org/wiki/Tree_(graph_theory) redirects to https://en.wikipedia.org/wiki/Tree_structure and https://en.wikipedia.org/wiki/Tree_structure is in category Trees (data structures) So is one a subtype/hyponym of the other ... or what?? How are they related? Skimming the articles a bit, esp. the first paragraph which clearly states as much ( :) ), I believe the answer is: a tree (data structure) is an implementation (in a programming language) of / or a "type that simulates" a hierarchical tree structure. a tree (data structure) is the computer science analogue/dual to tree structure in mathematics

    2. Not to be confused with trie, a specific type of tree data structure. Not to be confused with tree (graph theory), a specific type of mathematical object.
    1. 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.
    1. Unfortunately, given how widely used concat_javascript_sources is, this required changing a lot of tests. It would be nice if we could remove some of the duplication in these tests (so that similar changes would not require updating this many tests), but that can come in another PR.
    1. An equation is any expression with an equals sign, so your example is by definition an equation. Equations appear frequently in mathematics because mathematicians love to use equal signs. A formula is a set of instructions for creating a desired result. Non-mathematical examples include such things as chemical formulas (two H and one O make H2O), or the formula for Coca-Cola (which is just a list of ingredients). You can argue that these examples are not equations, in the sense that hydrogen and oxygen are not "equal" to water, yet you can use them to make water.
    1. You’d think :empty would be it, but it’s not. That’s for matching things like <p></p>… container elements with nothing inside them. Inputs are no-content elements already.
    1. It is much easier to track what is going on within the activity. Instead of transporting additional state via ctx, you expose the outcome via an additional end event.

      Note: It's only super easy to see what's going on if you have the benefit of a diagram.

    2. So why the over-complication? What we got now is replicating a chain of && in the former version. This time, however, you will know which condition failed and what went in by using tracing. Look at the trace above - it’s impossible to not understand what was going on.
  17. Feb 2021
    1. Sass variables, like all Sass identifiers, treat hyphens and underscores as identical. This means that $font-size and $font_size both refer to the same variable. This is a historical holdover from the very early days of Sass, when it only allowed underscores in identifier names. Once Sass added support for hyphens to match CSS’s syntax, the two were made equivalent to make migration easier.
    1. Now you can easily spot them! The rule is: if you see a Result it means that this function can throw an exception. And you even know its type in advance.
    2. we also wrap them in Failure to solve the second problem: spotting potential exceptions is hard
    3. Almost everything in python can fail with different types of exceptions: division, function calls, int, str, generators, iterables in for loops, attribute access, key access, even raise something() itself may fail. I am not even covering IO operations here. And checked exceptions won’t be supported in the nearest future.
    4. You still need to have a solid experience to spot these potential problems in a perfectly readable and typed code.
    5. print will never be actually executed. Because 1 / 0 is an impossible operation and ZeroDivisionError will be raised.
    1. For this one we'll define a helper method to handle raising the correct errors. We have to do this because calling .run! would raise an ActiveInteraction::InvalidInteractionError instead of an ActiveRecord::RecordNotFound. That means Rails would render a 500 instead of a 404.

      True, but why couldn't it handle this for us?

    1. Yes, you do face difficult choices (moral) but you don't care about it. All you care are the reputation bars. So... Let's kill this guy, who cares if he is innocent, but this faction needs it or I'm dead. Sounds great on paper but to be honest... you just sit there and do whatever for these reputation bars. If you won't, then you lose
  18. Jan 2021
    1. We informed and documented. We made it easy for you to understand the problem and also to take action if you disagreed. I hope you didn’t read https://linuxmint-user-guide.readthedocs.io/en/latest/snap.html#how-to-install-the-snap-store-in-linux-mint-20. I can’t understand how it could be simpler.
    2. Is it harder to enable it in Mint than it is to disable it in Ubuntu? Not at all. Is how to enable it better documented in Mint than how to disable it in Ubuntu? Absolutely: https://linuxmint-user-guide.readthedocs.io/en/latest/snap.html.
    1. Note that the mere presence of this header causes premailer to be skipped, i.e., even setting skip_premailer: false will cause premailer to be skipped. The reason for that is that the skip_premailer is a simple header and the value is transformed into a string, causing 'false' to become truthy.
    1. If components gain the slot attribute, then it would be possible to implement the proposed behavior of <svelte:fragment /> by creating a component that has a default slot with out any wrappers. However, I think it's still a good idea to add <svelte:fragment /> so everyone who encounters this common use case doesn't have to come up with their own slightly different solutions.
    1. While it is easy to imagine that all iterators could be expressed as arrays, this is not true. Arrays must be allocated in their entirety, but iterators are consumed only as necessary. Because of this, iterators can express sequences of unlimited size, such as the range of integers between 0 and Infinity.
    1. I've reproduced, in a very simple way, what I would like it to do: https://svelte.dev/repl/2b0b7837e3ba44b5aba8d7e774094bb4?version=3.19.1

      This is the same URL as the original example given in issue description.

      I'm guessing what happened is they started with that one, made some changes, and then I think they must have forgot to save their modified REPL (which would have generated a new, unique URL).

    1. This is a dynamic value because of hybrid devices which can use a mix of mouse and touch input.
    1. It’s fairly common to assume that there is an onHover event handler in React, especially when you consider the naming conventions of the other event handlers, such as onClick, onSubmit, and onDrag.Why wouldn’t there be an onHover event in React?
    1. “JSONP is JSON with extra code” would be too easy for the real world. No, you gotta have little discrepancies. What’s the fun in programming if everything just works? Turns out JSON is not a subset of JavaScript. If all you do is take a JSON object and wrap it in a function call, one day you will be bitten by strange syntax errors, like I was today.
    1. Users want work be done. Not struggling about how allowing access to removable medias or such a file on another partition… Not breaking their habits or workflows each time a snap replaces a deb.
  19. Dec 2020
    1. No more waiting around for pull requests to be merged and published. No more forking repos just to fix that one tiny thing preventing your app from working.

      This could be both good and bad.

      potential downside: If people only fix things locally, then they may be less inclined/likely to actually/also submit a merge request, and therefore it may be less likely that this actually (ever) gets fixed upstream. Which is kind of ironic, considering the stated goal "No more waiting around for pull requests to be merged and published." But if this obviates the need to create a pull request (does it), then this could backfire / work against that goal.

      Requiring someone to fork a repo and push up a fix commit -- although a little extra work compared to just fixing locally -- is actually a good thing overall, for the community/ecosystem.

      Ah, good, I see they touched on some of these points in the sections:

      • Benefits of patching over forking
      • When to fork instead
    2. # fix a bug in one of your dependencies vim node_modules/some-package/brokenFile.js # run patch-package to create a .patch file npx patch-package some-package

      I love how directly this allows you to make the change -- directly on the source file itself -- and then patch-package does the actual work of generating a patch from it. Brilliant.

  20. developer.mozilla.org developer.mozilla.org
    1. In a browser, the chrome is any visible aspect of a browser aside from the webpages themselves (e.g., toolbars, menu bar, tabs). This is not to be confused with the Google Chrome browser.
  21. Nov 2020
    1. There is no rerender, when you call listen, then all scroll events will warn on chrome. See this entry from svelte: breaking the web

      Even the author of this library forgot this about Svelte?? :) (Or maybe he didn't and this response misunderstood/falsely assumed that he had.)

    1. if the value given in value is contained in the array that is the value for the field for the form


      • the value given in value prop of Field
      • the value for the field for the form (formState.values[field_name])
    1. I think you meant a different set of arguments to Object.assign ? should be Object.assign({}, api.headers, headers) because you don't want to keep adding custom headers into hash of common api.headers. right?
    1. I think what the author intended to do was check if the second argument was a non-empty string (which is not the same thing as checking whether there are more than 1 argument, as the second argument could be passed but be the empty string).
    1. When you email me, please include a minimal bash script that demonstrates the problem in the body of the email (not as an attachment). Also very clearly state what the desired output or effect should be, and what error or failure you are getting instead. You are much more likely to get a response if your script isn't some giant monster with obtuse identifiers that I would have to spend all afternoon parsing.
    2. You could decide to trust yourself and your teammates to always remember this special case. You can all freely use short-circuiting, but simply don't allow a short-circuit expression to be on the last line of a script, for anything actually deployed. This may work 100% reliably for you and your team, but I don't believe that is the case for myself and many other developers. Of course, some kind of linter or commit hook might help.
    1. It might seem too obvious but I've been struggling long time with this until I got that you need to include the base image too

      Thanks for the tip

    2. the "trick" is to pass to --cache-from the image you are rebuilding (and have it pulled already) and ALSO the image that it uses as base in the FROM.