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How to construct a WebSocket URI relative to the page URI?
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Using the Window.URL API - https://developer.mozilla.org/en-US/docs/Web/API/Window/URL
Works with http(s), ports etc.
var url = new URL('/path/to/websocket', window.location.href);
url.protocol = url.protocol.replace('http', 'ws');
url.hre...
Need to ZIP an entire directory using Node.js
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Use Node's native child_process api to accomplish this.
No need for third party libs. Two lines of code.
const child_process = require("child_process");
child_process.execSync(`zip -r DESIRED_NAME_OF_ZIP_FILE_HERE *`, {
cwd: PATH_TO_FOLDER_YOU_WANT_ZIP...
View markdown files offline [closed]
...comments and issues
Click through local links to render other .md files
An API to use in your own projects
Export to an HTML file
Install with pip:
pip install grip
Then go to the directory that contains your README file and run:
grip
Pass -h for additional help and options.
Here's a screen...
HTML5 check if audio is playing?
What's the javascript api for checking if an html5 audio element is currently playing?
9 Answers
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Ruby on Rails: how to render a string as HTML?
...safe. Link
What's happening is that, as a security measure, Rails is escaping your string for you because it might have malicious code embedded in it. But if you tell Rails that your string is html_safe, it'll pass it right through.
@str = "<b>Hi</b>".html_safe
<%= @str %>
OR...
AWS S3 copy files and folders between two buckets
... can get the code name for your bucket's region with this command:
$ aws s3api get-bucket-location --bucket my_bucket
By the way, using Copy and Paste in the S3 web console is easy, but it seems to download from the source bucket into the browser, and then upload to the destination bucket. Using ...
Explain the use of a bit vector for determining if all characters are unique
...ly can be of different size or you should specify the size in constructor.
API. With bit vectors you will have easier to read code, probably something like this:
vector.SetFlag(4, true); // set flag at index 4 as true
for int you will have lower-level bit logic code:
checker |= (1 << 5); //...
What's up with Java's “%n” in printf?
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See the docs.oracle.com/javase/1.5.0/docs/api/java/util/…
– Namo
Jan 16 '19 at 9:34
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What is the size of ActionBar in pixels?
...attr/actionBarSize (note the lack of android namespace) which works on all API levels.
– Jake Wharton
Jul 4 '13 at 3:27
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windbg 备忘 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...它通常作为全功能的调试器附上进程（使用Win32 Debugging API）。在这种模式下，可以设置断点，单步调试代码，得到各种调试事件的通知（例如，异常，加载/卸载模块，启动/退出线程，等等）。Visual Studio也可以做到这些，并提...