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Firefox ignores option selected=“selected”
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Add autocomplete="off" HTML attribute to every select tag.
(source: https://stackoverflow.com/a/8258154/260080)
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界面布局组件 · App Inventor 2 中文网
...望组件一个一个地显示，请使用 垂直滚动条布局。
这个版本是可滚动的。
属性
水平对齐
一个数字，用于表示水平滚动条布局的内容如何水平对齐。选择分别是：
1 （左对齐）
2 （右对齐）
3 （水平居中）
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开源邮件传输代理软件 -- Postfix 介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...命令，如流行的本地投递代理procmail。在流行的linux发行版本RedHat中，我们就使用procmail作为最终的本地投递代理。
远程投递代理SMTP进程根据收件人地址查询一个SMTP服务器列表，按照顺序连接每一个SMTP服务器，根据性能对该表...
Tool for comparing 2 binary files in Windows [closed]
...inary diff, designed for large files)
WinDiff
bsdiff
HexCmp
See also: https://web.archive.org/web/20151122151611/https://stackoverflow.com/questions/688504/binary-diff-tool-for-very-large-files
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Short form for Java if statement
...ty == null? I'd therefore say your middle solution is definitely the best (PS and I approve of the 'unnecessary' parentheses! People need to remember that 99% of coding is communicating with other people (and your future self), not the compiler - otherwise we'd use c!)
– Alex
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Postgresql - unable to drop database because of some auto connections to DB
...N DATABASE thedb FROM public;
(and possibly other users/roles; see \l+ in psql)
You can then terminate all connections to this db except your own:
SELECT pid, pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = current_database() AND pid <> pg_backend_pid();
On older versions p...
Convert boolean to int in Java
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int myInt = myBoolean ? 1 : 0;
^^
PS : true = 1 and false = 0
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What IDE to use for Python? [closed]
...|Y |CF|Y |Y*|Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |*JavaScript
PyDev (Eclipse) |Y |F |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y | | | |
PyScripter |W |F |Y | |Y |Y | |Y |Y |Y | |Y |Y |Y | | | |
PythonWin |W |F |Y | |Y | | |Y |Y | | |Y | | | | | |
SciTE |Y |F...
Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...分配内存
代码的执行效果会受到设备CPU,设备内存,系统版本等诸多因素的影响。为了确保代码能够在不同设备上都运行良好，需要最大化代码的效率。
避免创建不必要的对象
虽然GC可以回收不用的对象，可是为这些对象分配...
How do you find the current user in a Windows environment?
...ets the user's domain.
PowerShell
In the PowerShell command prompt or a .ps1 or .psm1 script, you can use the following:
[System.Security.Principal.WindowsIdentity]::GetCurrent().Name - Gives you the fully qualified username (e.g. Domain\Username). This is also the most secure method because it c...