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What is copy-on-write?
...gy used in computer programming. The fundamental idea is that if multiple callers ask for resources which are initially indistinguishable, you can give them pointers to the same resource. This function can be maintained until a caller tries to modify its "copy" of the resource, at which point a true...
NSIS学习笔记(持续更新) - C/C++ - 清泛网 - 专注C/C++及内核技术
...code\Plugins"
echo off
Q 桌面快捷方式,示例
在section "install"中添加下面的代码,新建shortcut
CreateShortcut "$DESKTOP\${APPNAME}.lnk" "$INSTDIR\${APPEXENAME}"
在section "uninstall"中添加下面的代码,删除shortcut
delete "$DESKTOP\${APPNAME}.lnk"
Q 关...
How to select multiple files with ?
...
<form enctype='multipart/form-data' method='POST' action='submitFormTo.php'>
<input type='file' name='files[]' multiple />
<button type='submit'>Submit</button>
</form>
Make sure you have the enctype='multipart/form-data' attribute in your <form> tag, ...
User recognition without cookies or local storage
...ople are so security-aware that it would be difficult to get people to install these kinds of programs on their system. This leaves you stuck with using Cookies and other, similar tools.
Cookies and other, similar tools
You might consider building a Data Profile, then using Probability tests to id...
How do you manage databases in development, test, and production?
...of good options. I wouldn't use the "restore a backup" strategy.
Script all your schema changes, and have your CI server run those scripts on the database. Have a version table to keep track of the current database version, and only execute the scripts if they are for a newer version.
Use a migr...
Stop caching for PHP 5.5.3 in MAMP
Installed MAMP on a new Macbook with PHP 5.5.3.
9 Answers
9
...
How to send FormData objects with Ajax-requests in jQuery? [duplicate]
...end( 'file', input.files[0] );
$.ajax({
url: 'http://example.com/script.php',
data: fd,
processData: false,
contentType: false,
type: 'POST',
success: function(data){
alert(data);
}
});
Notes:
Setting processData to false lets you prevent jQuery from automatically transforming...
快速理解 高频对冲套利自动交易(程式化交易) - 更多技术 - 清泛网 - 专注...
...的都是浮亏的。直到浮亏变盈。)
你的理解大体上没有问题。与以往单向投机的区别是:我并非在某个价位上有多笔持仓浮亏,而是,每一个持仓浮亏单,均是不同价格,且由于是对冲套利持仓,不担心绝对价格的暴涨暴跌,...
How do I resolve a HTTP 414 “Request URI too long” error?
I have developed a PHP web app. I am giving an option to the user to update multiple issues on one go. In doing so, sometimes the user is encountering this error. Is there any way to increase the lenght of URL in apache?
...
Can you nest html forms?
... I agree with the answer, but to ask another, why not? Why does HTML not allow for nesting forms? To me, it appears to be a limitation that we would be better off without. There are many examples where using nested forms would be easier to program (i.e. using an upload photo form with a profile ed...