frontend

Writing Front End for GDB

由 无人久伴 提交于 2019-11-27 05:48:02
问题 I want to write a GUI based debugger wrapped over GDB. Because, I dont want the program to stop after watch points or break points. Instead, it should redirect the details like filename, line number, new value and stuffs to a file and continue execution. I am pretty bad at scripting. So, I want some starting point to start developing front end for GDB. As far as I googled, this link http://ftp.gnu.org/old-gnu/Manuals/gdb-5.1.1/html_node/gdb_211.html is not much understandable for a beginner

How to set build .env variables when running create-react-app build script?

由 有些话、适合烂在心里 提交于 2019-11-27 05:14:49
问题 I'm using the following environment variable in my create-react-app: console.log(process.env.REACT_APP_API_URL) // http://localhost:5555 It works when I run npm start by reading a .env file: REACT_APP_API_URL=http://localhost:5555 How do I set a different value like http://localhost:1234 when executing a npm run build ? This is my package.json file: { "name": "webapp", "version": "0.1.0", "private": true, "devDependencies": { "react-scripts": "0.9.0" }, "dependencies": { "react": "^15.4.2",

Chrome 65 blocks cross-origin <a download>. Client-side workaround to force download?

由 ＊爱你＆永不变心＊ 提交于 2019-11-27 04:15:35
Chrome 65 removed support for the download attribute on anchor elements with cross-origin href s : Block cross-origin <a download> To avoid what is essentially a user-mediated cross-origin information leakage, Blink will now ignore the presence of the download attribute on anchor elements with cross origin attributes. Note that this applies to HTMLAnchorElement.download as well as to the element itself. Intent to Remove | Chromestatus Tracker | Chromium Bug This breaks serverless downloads (for cross-origin resources). It has also broken Reddit Enhancement Suite's save image button ( .res

onEnter prop in react-router v4

由 五迷三道 提交于 2019-11-27 03:45:47
问题 I'm using react-router v4 . I find it confusing that when I click on <Link> component, the route is immediately changed. I want to stay at the current route before I fetch the data, not to switch the route and then fetch the data. I find that in react-router v3 there's a onEnter hook, but now in react-router v4 , it is deprecated. So how can I fetch data right after I click on <Link> component and before the route is changed? Example: it's: at A -> click at <Link> to B -> fetching data for B

What is Bootstrap?

由 ≯℡__Kan透↙ 提交于 2019-11-27 02:28:24
There are a lot of questions here related to Bootstrap. I see a lot of people using it. So I tried to research it, and I found the official Bootstrap site , but there was only a download section and a few words after that. Nothing that explains what is it for... I just understood that it is a front-end helper. I have tried to find something by Googling, but found nothing specific. Everything I found is related to the computer science definition. So, my questions are: What is Bootstrap at all? What is it used for, and how does it help front-end development? I would also like some more details

what is `optimistic updates` in front-end development

由 狂风中的少年 提交于 2019-11-27 02:08:33
问题 I'm reading the intro to redux pattern, and there is the following paragraph there: ... consider the new requirements becoming common in front-end product development, such as handling optimistic updates, rendering on the server, fetching data before performing route transitions, and so on. My question is what is optimistic updates here? 回答1: In an optimistic update the UI behaves as though a change was successfully completed before receiving confirmation from the server that it actually was

How to create new breakpoints in bootstrap 4 using CDN?

由 只愿长相守 提交于 2019-11-27 02:04:38
I use BootstrapCDN. Other styles written in sass and built by gulp. I need to create my own breakpionts. Is it possible to make them if I use CDN? I can't figure out how to do it. I have to create these breakpoints: --breakpoint-xxxs: 0; --breakpoint-xxs: 320px; --breakpoint-xs: 568px; --breakpoint-sm: 667px; --breakpoint-md: 768px; --breakpoint-lg: 992px; --breakpoint-xl: 1200px; --breakpoint-xxl: 1440px; --breakpoint-xxxl: 1600px; I want to get something like this: <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384

good postgresql client for windows? [closed]

由 我怕爱的太早我们不能终老 提交于 2019-11-27 01:44:12
问题 coming back to postgresql after several years of oracle ... what are the state-of-the art postgresql administrative/ddl generating/data inserting frontends on windows? it would be nice if it had integration for postgis as well. it should be standalone or alternatively a plugin for intellij idea thinking back, all the windows programs specific for postgresql i have used were crap, especially PGAdmin. had it become better? 回答1: I like Postgresql Maestro. I also use their version for MySql. I'm

How to get all the values of input array element jquery [duplicate]

由 ￣綄美尐妖づ 提交于 2019-11-27 00:35:33
问题 This question already has answers here : how to store textbox values in array using jquery? (2 answers) Closed 5 years ago . Here is my html input elements <input type="text" name="pname[]" value="" /> <input type="text" name="pname[]" value="" /> <input type="text" name="pname[]" value="" /> <input type="text" name="pname[]" value="" /> <input type="text" name="pname[]" value="" /> <input type="text" name="pname[]" value="" /> How can I get all the values of pname array using Jquery 回答1: By

how to install multiple versions of package using npm

由 戏子无情 提交于 2019-11-27 00:16:22
问题 Due to https://github.com/npm/npm/issues/2943, npm will never support the ability to alias packages and install multiple versions of the same package. The workarounds posted on the github issue might work for pure-JS modules, but as npm becomes a standard for frontend package management, packages now include various assets such as CSS. Is there any workaround to install multiple versions of the same package? The best idea I've come up with is to "clone" a package, and publish it with a
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