195 Matching Annotations
  1. Apr 2021
    1. First, no joypad support. It's not a big deal because you can still use big picture emulation or joy2key
    1. After some searching i found a stack overflow problem that didn't fix my issue but anyhow… I simply used a little ruby and the capybara library to find the field myself with some case insensitive regex and the ruby detect method
    1. For now, you will need to give the second root a different named route: authenticated :user do root to: "users#index", as: :authenticated_root end unauthenticated do root to: "main#index" end
  2. Mar 2021
    1. If I were to sum up why in one sentence, it's because I don't miss useEffect. I understand why it exists, I understand the approach React takes, and there are benefits of its approach. But writing complex React components feels more like admin; a constant worry that I'll miss a dependency in my useEffect call and end up crashing my browser session. With Svelte I don't have that lingering feeling, and that's what I've come to enjoy.
    2. One gripe I've had with this approach is that you lose the visual cues that you're passing children into the Box component; they now aren't nested within the Box when you render them like we're used to in HTML; it's now up to you to read the props and spot which ones are being used to provide children.
    3. Here's where I start to have a preference for Svelte; the two are very similar but once I got used to Svelte I found that React felt like jumping through hoops. You can't create a worker instance, it has to go in a useRef, and then you can't easily pull code out into a function without then requiring useCallback so it can be a safe dependency on useEffect. With Svelte I write code that's closer to "plain" JavaScript, whereas in React more of my code is wrapped in a React primitive.
    4. because React components are re-executed every time the component re-renders, you can easily end up with thousands of workers being created! It's essential to use useRef to avoid this problem by maintaining a reference to the worker that you've created.
    1. If you really want this, I suggest you write a little function that extracts the executable name from the .desktop file and runs it. Add these lines to your shell's initialization file (e.g. ~/.bashrc): runDesktop () { eval "$(awk -F= '$1=="Exec"{$1=""; print}' "$1")" } Then, you can run your .desktop file with runDesktop ~/Desktop/slack.desktop
    1. A solution is almost indicated in the question: hinder xdg-open from choosing exo-open. A brute-force approach is to copy /usr/bin/xdg-open to /usr/local/bin (/usr/local/bin is earlier in PATH unless PATH has been modified) and to patch it to use open_generic instead of exo_open (unlike the XFCE4-specific exo-open, open_generic does honor xdg mime types)
    1. neither knows what to do with naked domain. So gnome-open http://askubuntu.com works but not gnome-open askubuntu.com. Here is a small function to make it easier to type and accept the stripped down domain name. function go { gnome-open http://$1 ; }
    1. To the consternation of some users, 3.x employed Unicode variable names such as λ, φ, τ and π for a concise representation of mathematical operations. A downside of this approach was that a SyntaxError would occur if you loaded the non-minified D3 using ISO-8859-1 instead of UTF-8. 3.x also used Unicode string literals, such as the SI-prefix µ for 1e-6. 4.0 uses only ASCII variable names and ASCII string literals (see rollup-plugin-ascii), avoiding encoding problems.
    1. Dave Rupert has a good solution that uses an input's invalid event. Instead of using the :invalid pseudo selector, he adds a CSS class to the input when it becomes invalid. We will extend this approach by removing the CSS class when the element becomes valid again.
    1. Validating forms has notoriously been a painful development experience. Implementing client side validation in a user friendly, developer friendly, and accessible way is hard. Before HTML5 there was no means of implementing validation natively; therefore, developers have resorted to a variety of JavaScript based solutions.
    1. You need to create a copy of the method or the class of your callable task in order to fix this and have two identical steps.
  3. Feb 2021
    1. # catch multi-char special key sequences read -sN1 -t 0.0001 k1 read -sN1 -t 0.0001 k2 read -sN1 -t 0.0001 k3 key+=${k1}${k2}${k3}
    1. So how are we going to create a model that doesn’t have a database table behind it? There are several potential solutions including various plugins but we’re going to use the method described in an entry on the Code Tunes blog. This shows a techinque that involves overriding a couple of methods in an ActiveRecord model and then manually defining the columns in the model file rather than in the database table. In our Recommendation model we’ll add in the two overridden methods and then use the column class method to define the columns in a similar way to how they’re defined in a migration file.

      Does this still work in Rails 6? I wonder.

    1. With the introduction of CPUs which ran faster than the original 4.77 MHz Intel 8088 used in the IBM Personal Computer, programs which relied on the CPU's frequency for timing were executing faster than intended. Games in particular were often rendered unplayable. To provide some compatibility, the "turbo" button was added. Engaging turbo mode slows the system down to a state compatible with original 8086/8088 chips.
    1. There is nothing wrong with accepts_nested_attributes_for. This is what you should use in your typical case. My post describes a non-typical case. ContactListForm is not an ActiveRecord object, it is an object that includes ActiveModel::Model, which does not support accepts_nested_attributes_for.
    1. If you need your grid to utilize a gap between columns / rows, you won't be able to use the gap property when using this method. You'd instead need to resort to some negative margin manipulation to handle the extra gap space.
    1. I hope we see new CSS capabilities arise that allow this sort of effect without the need for trickery.
    2. Since CSS doesn’t (yet) offer a way to style grid cells, areas, or tracks directly, we have to stretch elements over the parts we want to style independently from the elements that contain content.
  4. Jan 2021
    1. // read-only, but visible to consumers via bind:start export let start = 0;

      Can't do

      export const start = 0

      (because it needs to be mutable/assignable within this local component), so we have to do

      export let start = 0

      with a comment saying that it's read-only (by the consumer).

    1. https://github.com/sveltejs/svelte/issues/1037#issuecomment-737872461

      Explanation (from https://github.com/sveltejs/svelte/issues/1037#issuecomment-739458005):

      @AlexGalays register is an action created and passed in from the parent node (Wrapper) which allows the child to register with it. Not builtin to svelte.

      That's very clever @PatrickG. Nice one. I was a bit confused when first looking at it to understand what was going on, but I think that will be a handy tool in the toolbox.

      But why do we need this? If we remove all use:register, it still toggles just fine. Seems the only benefit is that this allows cleanup.

    1. JSONP is really a simply trick to overcome XMLHttpRequest same domain policy. (As you know one cannot send AJAX (XMLHttpRequest) request to a different domain.) So - instead of using XMLHttpRequest we have to use script HTMLl tags, the ones you usually use to load JS files, in order for JS to get data from another domain. Sounds weird?
  5. Dec 2020
    1. Yarn only runs the postinstall hook after yarn and yarn add, but not after yarn remove. The postinstall-postinstall package is used to make sure your postinstall hook gets executed even after a yarn remove.
    1. It seems being able to bind:this={slotEl} directly on a slot element is a popular request. I'll add my +1 as adding div wrappers just to get dom references gets old really fast.
    1. This creates an options object with a getter function for the passive property; the getter sets a flag, passiveSupported, to true if it gets called. That means that if the browser checks the value of the passive property on the options object, passiveSupported will be set to true; otherwise, it will remain false. We then call addEventListener() to set up a fake event handler, specifying those options, so that the options will be checked if the browser recognizes an object as the third parameter.
  6. Nov 2020
    1. If I use import { createEventDispatcher } from 'svelte/internal'; instead of import { createEventDispatcher } from 'svelte'; then it seems to work because it's loading from the same module.
    1. function fail { rm -f ${tmp}* exit 1 } module load bedops || fail

      This could be a workaround for my problem where this failed command didn't abort:

      set -e
      { echo 'false'; false; } && { echo 'true'; true; }
      echo "Got to next line"


      set -e
      { echo 'false'; false; } && { echo 'true'; true; } || exit $?
      echo "Got to next line"
    1. # Run once, hold otherwise if [ -f "already_ran" ]; then echo "Already ran the Entrypoint once. Holding indefinitely for debugging." cat fi touch already_ran
    2. Edit this file (corresponding to your stopped container): vi /var/lib/docker/containers/923...4f6/config.json Change the "Path" parameter to point at your new command, e.g. /bin/bash. You may also set the "Args" parameter to pass arguments to the command. Restart the docker service (note this will stop all running containers):
    1. {#key} was introduced in Svelte v3.28, before that you needed to use a keyed {#each} block with only one item When the key changes, svelte removes the component and adds a new one, therefor triggering the transition.
    1. Thanks so much for the reply! Due to space limitations for comments, I have appended my reply to my original question. Thanks again! (P.S. I can't up-vote your reply until my rep hits 15... Sorry about that.)
    1. It won't work in all use cases, but it's better than the div soup.
    2. I run into this on almost every project and end up doing this as a workaround: :global([slot="content"]) This allows me to style that extra div in the component that contains the slots but it would be super nice to have <MyComponent slot="content"/> and eliminate that extra div
    3. If this is getting implemented, I think I'll love to see both implemented. I can see a lot of use cases where I would like to encapsulate the component with additional wrappers and in another scenarios I would like to just use the component. Now i work around this using empty div but then at times it breaks the structure because of the div element and I'll have to add more class utilities to make it work. This will be a great addition for Svelte.
  7. Oct 2020
    1. Use the same value that was submitted, which ensures that a 'change' is triggered even though the value itself doesn't change. Therefore, the same value gets validated again.

      Calling it "change" even though it didn't change is kind of cheating/abuse ... but I guess it's okay...??

        mutateValue([name], state, { changeValue }) {
          // change the value to the same value, thus
          // triggering a revalidation of the same value
          changeValue(state, name, value => value);
    1. But also, if you do want to use separate functions and have your dependencies still counted, you can make all of the relevant dependencies be arguments to those functions, so the compiler can see them in the reactive block.
  8. react-spectrum.adobe.com react-spectrum.adobe.com
    1. In addition, this example shows usage of the isPressed value returned by useButton to properly style the button's active state. You could use the CSS :active pseudo class for this, but isPressed properly handles when the user drags their pointer off of the button, along with keyboard support and better touch screen support.
    1. We aim to support all svelte features. In some cases this is not possible. For those cases we provided feasible workarounds.
    2. jsx currently does not allow to use : in attribute/property names. As a workaround every : can be replaced be _ (for example bind_value is converted to bind:value for svelte).
    1. The limits are chosen to avoid wrapping in editors with the window width set to 80, even if the tool places a marker glyph in the final column when wrapping lines.
    1. I need this as a workaround for CSS Regions which currently don't dispatch child node events. Regions only render the child node content, they don't act as parentNodes.
    1. A reasonably clean alternative would be to map a function over the array and use destructuring in the each loop: {#each [1, 2, 3, 4].map(n => ({ n, sqr_n: n * n })) as { n, sqr_n }} {sqr_n} {sqr_n / 2}<br> {/each}
    2. Similar to Javascript or ocaml it is always possible to replace let with a new function, so as you say there are ways around the lack of syntax.
    1. If you are wondering about the odd looking (d), this keys the component, ensuring that the compiler doesn’t do any fancy sharing of objects that leads to sur­pris­ing bugs. You don’t often need to key items in Svelte, but I have run into some cases where it is essential.
  9. Sep 2020
    1. setContext / getContext can only be used once at component init, so how do you share your API result through context? Related: how would you share those API results if the call was made outside of a Svelte component, where setContext would be even more out of the question (and the API call would arguably be better located, for separation of concerns matters)? Well, put a store in your context.
    1. Modules using code that doesn’t exist in browsers such as process.env.NODE_ENV and forcing you to convert or polyfill it.
    2. Personally for me, this is incredibly hard to read. Regex everywhere, nested objects with different rules and configurations that are very intuitive, multiple loaders that resolve backwards, built in loaders having obscure issues that require using third party loaders in between, separation of plugins and loaders, and so on.
    1. Rollup is a tool that lets you write your application using ES6 modules, even though you can't publish those modules directly to your users, because native support is only just starting to land in browsers. Rollup compiles your modules into a format that all browsers _do_ understand—a single script file—by, essentially, concatenating files together (while reordering and renaming declarations to preserve scope).
    1. I don't understand why it just launches the mutation once and then it throws the error Function called outside component initialization, the only way to make it work is to do something like $: result = mutation(...) but it doesn't make sense, I don't want to run the mutation after each keystroke.
    1. Svelte will not offer a generic way to support style customizing via contextual class overrides (as we'd do it in plain HTML). Instead we'll invent something new that is entirely different. If a child component is provided and does not anticipate some contextual usage scenario (style wise) you'd need to copy it or hack around that via :global hacks.
    1. Also, I'm starting to wonder if maybe it's okay to have multiple spreads? If the alternative to <Foo {...a} {...b} {...c} d={42}> is that people will write <Foo {...Object.assign({}, a, b, c)} d={42}> anyway, then do we gain anything with the constraint?
    1. Not sure if there is a better way, but I declare all possible component constructors and then use that map to convert string component names found in JSON to Components.
    1. Is there a good way to do this given the compiler won't know at build time what events are needed? Should I make a wrapper that does addEventListener myself with a bind:this? Would be nice if Svelte could handle dynamic events though.
    1. By default, in order to allow inline fat-arrow validation functions, the field will not rerender if you change your validation function to an alternate function that has a different behavior. If you need your field to rerender with a new validation function, you will need to update another prop on the Field, such as key
    1. props does not update in real time. You can try console.log(values.firstName) inside the validate function to confirm this. To get around this my way is quite a hack, just add key = {values.firstName} to Field component like this
    1. I don't know what is the status of <svelte:body class:name={condition} implementation, but in the meantime, I've managed to overpass this issue by using <svelte:head> instead. As my need was to add styling to my page's body.
    1. here I wrapped the function call in an IIFE - that's what that (async () => {....})() is if you've never seen it. This is simply because we need to wrap the await call in a function that uses the async keyword, and we also want to "immediately invoke" the function (IIFE = "Immediately Invoked Function Execution") in order to call it.
    1. Here we store the three Promise objects in variables, which has the effect of setting off their associated processes all running simultaneously. Next, we await their results — because the promises all started processing at essentially the same time, the promises will all fulfill at the same time
    1. Svelte offers an immutable way — but it’s just a mask to hide “assignment”, because assignment triggers an update, but not immutability. So it’s enough to write todos=todos, after that Svelte triggers an update.
  10. github.com