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可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术

...区,中断向量表等,所以它如果被中断的话,可能会出现问题,这类函数是不能运行在多任务环境下的。 可重入函数也可以这样理解,重入即表示重复进入,首先它意味着这个函数可以被中断,其次意味着它除了使用自己栈上...
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How do I get the base URL with PHP?

... Try this: <?php echo "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; ?> Learn more about the $_SERVER predefined variable. If you plan on using https, you can use this: function url(){ return sprintf( "%s://%s...
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Is there any difference between __DIR__ and dirname(__FILE__) in PHP?

...7) But, there are at least two differences : __DIR__ only exists with PHP >= 5.3 which is why dirname(__FILE__) is more widely used __DIR__ is evaluated at compile-time, while dirname(__FILE__) means a function-call and is evaluated at execution-time so, __DIR__ is (or, should be) faste...
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Remove empty array elements

... of strings, you can simply use array_filter(), which conveniently handles all this for you: print_r(array_filter($linksArray)); Keep in mind that if no callback is supplied, all entries of array equal to FALSE (see converting to boolean) will be removed. So if you need to preserve elements that ...
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Are PHP Variables passed by value or by reference?

... function is changed, it does not get changed outside of the function). To allow a function to modify its arguments, they must be passed by reference. To have an argument to a function always passed by reference, prepend an ampersand (&) to the argument name in the function definition. &l...
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PHP Function Comments

Just a quick question: I've seen that some PHP functions are commented at the top, using a format that is unknown to me: 4 ...
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Deep Learning(深度学习)学习笔记整理系列之(二) - 大数据 & AI - 清泛...

...试图同时用生理学和计算机的手段,双管齐下,研究视觉问题。 他们收集了很多黑白风景照片,从这些照片中,提取出400个小碎片,每个照片碎片的尺寸均为 16x16 像素,不妨把这400个碎片标记为 S[i], i = 0,.. 399。接下来,...
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Deep Learning(深度学习)学习笔记整理系列之(二) - 大数据 & AI - 清泛...

...试图同时用生理学和计算机的手段,双管齐下,研究视觉问题。 他们收集了很多黑白风景照片,从这些照片中,提取出400个小碎片,每个照片碎片的尺寸均为 16x16 像素,不妨把这400个碎片标记为 S[i], i = 0,.. 399。接下来,...
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Deep Learning(深度学习)学习笔记整理系列之(二) - 大数据 & AI - 清泛...

...试图同时用生理学和计算机的手段,双管齐下,研究视觉问题。 他们收集了很多黑白风景照片,从这些照片中,提取出400个小碎片,每个照片碎片的尺寸均为 16x16 像素,不妨把这400个碎片标记为 S[i], i = 0,.. 399。接下来,...
https://www.tsingfun.com/it/bi... 

Deep Learning(深度学习)学习笔记整理系列之(二) - 大数据 & AI - 清泛...

...试图同时用生理学和计算机的手段,双管齐下,研究视觉问题。 他们收集了很多黑白风景照片,从这些照片中,提取出400个小碎片,每个照片碎片的尺寸均为 16x16 像素,不妨把这400个碎片标记为 S[i], i = 0,.. 399。接下来,...