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What's the difference between utf8_general_ci and utf8_unicode_ci?
..., utf8 is a flawed UTF-8 implementation from early MySQL versions which remains only for backward compatibility. The fixed version was given the name utf8mb4.
Note: Newer versions of MySQL have updated Unicode sorting rules, available under names such as utf8mb4_0900_ai_ci for equivalent rules based...
乐高机器人®组件 · App Inventor 2 中文网
... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
Why does Twitter Bootstrap Use Pixels for Font Size?
... feelings about this go and +1 this thread.
[Update] V3 roadmap oulined in V2.3 release blogpost makes no mention of adding support for ems.
[Update] Lots more information about Bootstrap V3 available in the pull request here including the following from Mark Otto:
We explored the use of rem units...
Differences between Java 8 Date Time API (java.time) and Joda-Time
... libraries in Java. The tables also contain a comparison between Joda-Time v2.8.1 and Java-8 (JSR-310). It is more detailed than this post.
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What is a stack trace, and how can I use it to debug my application errors?
...dbc.jdbcPreparedStatement.executeUpdate(Unknown Source)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
at org.hibernate.id.insert.AbstractSelectingDelegate.performInsert(AbstractSelectingDelegate.java:57)
... 54 more
In this exam...
How are msys, msys2, and msysgit related to each other?
... our build, as df5218b (config.mak.uname: support MSys2,
2016-01-13, Git v2.8.0-rc0) simply did not expect the version reported by uname -r to depend on the underlying Cygwin version: it expected the reported
version to match the "2" in "MSYS2".
So let's invert that test case to test for an...
How to encrypt/decrypt data in php?
...opular choices available:
PBKDF2 (Password Based Key Derivation Function v2)
bcrypt (aka Blowfish)
This answer will use an example with bcrypt.
Generation
A password hash can be generated like this:
$password = 'my password';
$random = openssl_random_pseudo_bytes(18);
$salt = sprintf('$2y$%02...
Hash collision in git
...-1 or Hardened-SHA-1 emerge.
So the new documentation now reads:
Git v2.13.0 and later subsequently moved to a hardened SHA-1
implementation by default, which isn't vulnerable to the SHAttered
attack.
Thus Git has in effect already migrated to a new hash that isn't SHA-1
and doesn't...
Best practice multi language website
..."Добро пожаловать!",
"Dutch"=>"Welkom!",
"Swedish"=>"Välkommen!",
"Basque"=>"Ongietorri!",
"Spanish"=>"Bienvenito!"
"Welsh"=>"Croeso!");
Now, if your website uses a cookie, you have this for example:
$_COOKIE['language'];
To make it easy let's transform it in a co...
Is Haxe worth learning? [closed]
...as published just a few months before a major release occurred (from V1 to V2). That major release didn't change much, but it did add a few incompatibilities. The book still remains a valid resource (I'm not just saying that because I wrote it ;) )
...