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Precision String Format Specifier In Swift
...(format:format, value)
}
Which then allows you to use them as:
M_PI % "%5.3f" // "3.142"
You can define similar operators for all of the numeric types, unfortunately I haven't found a way to do it with generics.
Swift 5 Update
As of at least Swift 5, String directly supports th...
NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...硬件驱动也常常离不开汇编代码，因为他是最靠近硬件的语言)
4.2一个汇编程序的组成
一个简单的汇编代码通常分成下面三个段:
旁注：在编译器编译并链接生成可执行文件的过程中，会出现两个section的概念，一个是在生成目...
In a PHP project, what patterns exist to store, access and organize helper objects? [closed]
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let's hope, that mainstream webhouses will migrate to PHP 5.3 soon, as it is still not common to see a full featured php 5.3 server
– Juraj Blahunka
Jan 23 '10 at 15:28
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How to implode array with key and value without foreach in PHP
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@Rikki No. Its pre PHP 5.3 thing. Anonymous function first appeared on PHP 5.3
– Shiplu Mokaddim
May 13 '14 at 11:10
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Best way to give a variable a default value (simulate Perl ||, ||= )
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PHP 5.3 has a shorthand ?: operator:
$foo = $bar ?: $baz;
Which assigns $bar if it's not an empty value (I don't know how this would be different in PHP from Perl), otherwise $baz, and is the same as this in Perl and older ver...
Converting string to Date and DateTime
...eTime class is available since PHP version 5.2 and createFromFormat since 5.3
– Diego Nemo
Sep 23 '13 at 19:10
14
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Strtotime() doesn't work with dd/mm/YYYY format
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You can parse dates from a custom format (as of PHP 5.3) with DateTime::createFromFormat
$timestamp = DateTime::createFromFormat('!d/m/Y', '23/05/2010')->getTimestamp();
(Aside: The ! is used to reset non-specified values to the Unix timestamp, ie. the time will be midni...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...存碎片
缓存本地化友好
通用性，兼容性，可移植性，易调试
现状
目前大部分服务端程序使用glibc提供的malloc/free系列函数，而glibc使用的ptmalloc2在性能上远远弱后于google的tcmalloc和facebook的jemalloc。 而且后两者只需要使用LD_P...
Change the maximum upload file size
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Great. Works with fastcgi enabled too. Requires PHP5.3 or newer.
– Ciantic
Jul 31 '13 at 12:46
1
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Accept function as parameter in PHP
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It's possible if you are using PHP 5.3.0 or higher.
See Anonymous Functions in the manual.
In your case, you would define exampleMethod like this:
function exampleMethod($anonFunc) {
//execute anonymous function
$anonFunc();
}
...