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MFC RadioButton用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...m_RBtGroup3);
DDX_Control(pDX, IDC_RADIO9, m_RBtGroup4);
}
问题一：如何更改RadioButton默认值？？？
方法1
在定义控件变量时，默认变量初值为-1，表示此组的任何RadioButton均不被选中，如果需要改变初始默认按钮的设置情况，...
Create or write/append in text file
...s:
$txt = "user id date";
$myfile = file_put_contents('logs.txt', $txt.PHP_EOL , FILE_APPEND | LOCK_EX);
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Serializing PHP object to JSON
...ata->getJsonData());. In essence, implement the function from 5.4, but call it by hand.
Something like this would work, as get_object_vars() is called from inside the class, having access to private/protected variables:
function getJsonData(){
$var = get_object_vars($this);
foreach ($va...
PHP/MySQL insert row then get 'id'
...ithin its own isolated session, which is where the ID comes from when you call mysql_insert_id() from your PHP (or LAST_INSERT_ID() in MySQL)
– rodrigo-silveira
Sep 26 '12 at 18:22
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...很多优化注意事项，但是看过这些文章后大多数存在一个问题就是只给出啥啥啥不能用，啥啥啥该咋用等，却很少有较为系统的进行真正性能案例分析的，大多数都是嘴上喊喊或者死记住规则而已（当然了，这话我自己听着都有...
How to fix “Headers already sent” error in PHP
...ders must be invoked before any output is made.
summary ⇊
Otherwise the call fails:
Warning: Cannot modify header information - headers already sent (output started at script:line)
Some functions modifying the HTTP header are:
header / header_remove
session_start / session_regenerate_id
se...
Check whether an array is empty [duplicate]
...pty($errors)) {
}
array_filter() function's default behavior will remove all values from array which are equal to null, 0, '' or false.
Otherwise in your particular case empty() construct will always return true if there is at least one element even with "empty" value.
...
Gradients in Internet Explorer 9
...soft.com/testdrive/Graphics/CSSGradientBackgroundMaker/Default.html
Note: all of these browsers also support rgb/rgba in place of hexadecimal notation.
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How do I remove all specific characters at the end of a string in PHP?
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using rtrim replaces all "." at the end, not just the last character
$string = "something here..";
echo preg_replace("/\.$/","",$string);
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How do I obtain crash-data from my Android application?
...n? At least when working on my own device being retrieved by cable, but ideally from any instance of my application running on the wild so that I can improve it and make it more solid.
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