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What's the difference between a Future and a Promise?
...eded.
For example take a look at how promises are defined in javascript:
https://promisesaplus.com/
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
The focus is on the composability using the then method like:
asyncOp1()
.then(function(op1Result){
// d...
CSS customized scroll bar in div
...(WebKit)
Similarly, WebKit now has its own version:
Styling scrollbars: https://www.webkit.org/blog/363/styling-scrollbars/
Demo of all WebKit scroll bar styling
From Custom scrollbars in WebKit, relevant CSS:
/* pseudo elements */
::-webkit-scrollbar { }
::-webkit-scrollbar-button...
How to backup a local Git repository?
...ript and the result is on github, including man pages and install script:
https://github.com/najamelan/git-backup
Installation:
git clone "https://github.com/najamelan/git-backup.git"
cd git-backup
sudo ./install.sh
Welcoming all suggestions and pull request on github.
#!/usr/bin/env ruby
#
# ...
Does Python optimize tail recursion?
...ptimization (handling both tail-recursion and continuation-passing style): https://github.com/baruchel/tco
Optimizing tail-recursion in Python
It has often been claimed that tail-recursion doesn't suit the Pythonic way of coding and that one shouldn't care about how to embed it in a loop. I don't ...
Amazon S3 direct file upload from client browser - private key disclosure
...t;
<title>AWS S3 File Upload</title>
<script src="https://sdk.amazonaws.com/js/aws-sdk-2.1.12.min.js"></script>
</head>
<body>
<input type="file" id="file-chooser" />
<button id="upload-button">Upload to S3</button>
&...
Should I use pt or px?
... is the only correct answer. The quoted w3.org url is updated from http to https as: https://www.w3.org/Style/Examples/007/units.en.html
– hyyou2010
Jan 2 '17 at 15:29
8
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Detecting a mobile browser
...@Gajus pointed out, this solution is now deprecated and shouldn't be used (https://developer.mozilla.org/en-US/docs/Web/API/Window/orientation)
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Declaring variables inside or outside of a loop
...ou declare a variable inside a loop or before the loop?
GitHub repository: https://github.com/gunduru/jvdt
Test Results for double case and 100M loop (and yes all JVM details): https://microbenchmarks.appspot.com/runs/b1cef8d1-0e2c-4120-be61-a99faff625b4
DeclaredBefore 1,759.209 ns
DeclaredInsi...
Accessing an SQLite Database in Swift
...er and get a bit familiar with Swift in the process. You can find it here: https://github.com/chrismsimpson/SwiftSQLite.
var db = SQLiteDatabase();
db.open("/path/to/database.sqlite");
var statement = SQLiteStatement(database: db);
if ( statement.prepare("SELECT * FROM tableName WHERE Id = ?") !=...
Linux C/C++程序常用的调试手段及异常排查总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...的一部分，程序是练手的二叉树算法：
kcachegrind：https://sourceforge.net/projects/precompiledbin/
原文标题《Linux-程序异常排查》，作者：Jiayun-Ye
来源：https://mikeblog.top/2019/03/05/Linux-程序异常排查
linux signal valgrind gprof