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socket网络编程中read与recv区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...使是采用recv + WAITALL 参数还是要考虑是否需要循环读取的问题,在实验中对于多数情况下recv (使用了MSG_WAITALL)还是可以读完buff_size,所以相应的性能会比直接read 进行循环读要好一些。
2、read 与 recv函数调用
read(sockfd, ...
HTTPKeepAlive,开启还是关闭 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...对服务端不得不维持大量的连接。开启还是关闭,这是个问题。
一个经常用来讲解HTTPKeepAlive的例子一般是这样描述的:当我们访问一个包含了若干个图片的网页时,如果HTTPKeepAlive是关闭的,那么页面中每一个图片都会发起一...
App Inventor 2 实现导出Excel全方案总结 · App Inventor 2 中文网
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App Inventor 2 OCR 图片文字识别全方案总结 · App Inventor 2 中文网
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App Inventor 2 TextboxUtil 扩展:消除输入框焦点(光标) · App Inventor 2 中文网
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App Inventor 2 SliderVertical 扩展:垂直的滑动条 · App Inventor 2 中文网
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Which MySQL data type to use for storing boolean values
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Going for char, in PHP at least, will lead to more code as !$boolean will never evaluate properly without further processing.
– Mild Fuzz
Jun 1 '11 at 20:58
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What does %5B and %5D in POST requests stand for?
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Not least important is why these symbols occur in url.
See https://www.php.net/manual/en/function.parse-str.php#76792, specifically:
parse_str('foo[]=1&foo[]=2&foo[]=3', $bar);
the above produces:
$bar = ['foo' => ['1', '2', '3'] ];
and what is THE method to separate query vars ...
Remove non-utf8 characters from string
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what to use instead $regex = <<<'END' for PHP < 5.3.x ?
– serhio
Apr 8 '10 at 23:00
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How to convert 1 to true or 0 to false upon model fetch
...d"]==="0"); // false
console.log(obj["isChecked"]==="Elephant"); // false
PHP
Same concept in PHP
$obj["isChecked"] = ($obj["isChecked"] == "1");
The same operator limitations as stated above for JavaScript apply.
Double Not
The 'double not' also works. It's confusing when people first read it but...
