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What does new self(); mean in PHP?
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self points to the class in which it is written.
So, if your getInstance method is in a class name MyClass, the following line :
self::$_instance = new self();
Will do the same as :
self::$_instance = new MyClass();
Edit : a couple more information...
Extract value of attribute node via XPath
...follow
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edited Jan 2 '13 at 22:15
Rory O'Kane
23.8k1111 gold badges8080 silver badges119119 bronze badges
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How to print SQL statement in codeigniter model
...m of your pages.
To enable the profiler place the following line anywhere within your Controller methods:
$this->output->enable_profiler(TRUE);
Profiling user guide:
https://www.codeigniter.com/user_guide/general/profiling.html
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ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...ssword Hasher that is default implemented in the UserManager that comes with MVC 5 and ASP.NET Identity Framework, is secure enough? And if so, if you could explain to me how it works?
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Get raw POST body in Python Flask regardless of Content-Type header
...ll be empty if form data is parsed. How can I get the raw post body unconditionally?
4 Answers
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How to make MySQL handle UTF-8 properly
...sure my database can handle UTF-8 characters correctly. How I can do this with MySQL?
14 Answers
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Is there a “goto” statement in bash?
Is there a "goto" statement in bash ? I know It is considered bad practice, but I need specifically "goto".
12 Answers
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ImportError: numpy.core.multiarray failed to import
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I was getting the same error and was able to solve it by updating my numpy installation to 1.8.0:
pip install -U numpy
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vector删除元素erase和通用算法remove区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...代器来删除单个或者范围的元素
iterator erase(
iterator _Where
);
iterator erase(
iterator _First,
iterator _Last
);
remove函数的定义
template<class _FwdIt, class _Ty> inline
_FwdIt remove(_FwdIt _First, _FwdIt _Last, const _Ty% _Val);
与erase不同的...
error LNK2019: 无法解析的外部符号 _GetFileVersionInfoSizeW@8，该符号在...
error LNK2019: 无法解析的外部符号 _GetFileVersionInfoSizeW@8，该符号在函数 _wmain 中被引用GetFileVersionInfoSize build时出现link2019 链接错误：#pragma comment(lib, "version")解决。GetFileVersionInfoSize build时出现link2019 链接错误：
#pragma comment(lib, "v...