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App Inventor 2 数据库方案对比 · App Inventor 2 中文网
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Web客户端
原生组件
自建服务端：MySQL + php后端数据库、MongoDB + php后端数据库
可模拟支持
自主可控，灵活性最高，相对成本最低。
中大型网络数据及文件存储
注：Redis也是NoSQL的一种，可...
Among $_REQUEST, $_GET and $_POST which one is the fastest?
...ing the nuances of XSS/XSRF causes XSS/XSRF. As long as you mitigate with tokens, there's no problem AND you get the benefits of using $_REQUEST (all your variables are in one superglobal). I actually rebuild $_REQUEST before using it based on the other superglobals because of 'variables_order'. ...
Stateless vs Stateful - I could use some concrete information
...ew, such case would be considered stateful. If, however, you always pass a token for the user but hold no other state whatsoever, than it's stateless. But feels stateful XD. This is so confusing.
– 7hi4g0
Oct 8 '14 at 15:36
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Why is exception handling bad?
...ly; since the finally block is guaranteed to be executed, objects can be deallocated there. The rest should be taken care of by variables going out of scope and garbage collection.
– Robert Harvey
Nov 17 '09 at 17:20
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How to remove old Docker containers
...ntainers in an elegant way.
And by Bartosz Bilicki, for Windows:
FOR /f "tokens=*" %i IN ('docker ps -a -q') DO docker rm %i
For PowerShell:
docker rm @(docker ps -aq)
An update with Docker 1.13 (Q4 2016), credit to VonC (later in this thread):
docker system prune will delete ALL unused da...
Too much data with var_dump in symfony2 doctrine2
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If you prefer to have the debug output in your php error log, use the following: error_log(print_r(\Doctrine\Common\Util\Debug::export($variable, $depth),1)); It's pretty cumbersome to type every time, but you can easily create a macro for it.
– And...
How do I syntax check a Bash script without running it?
...tax: ["$var" is syntactically a valid command-name expression; similarly, tokens == and "$string" are valid command arguments. (Generally, builtin [ is parsed with command syntax, whereas [[ - as a shell keyword - is parsed differently.) The shell builtin [ does not delegate to the "test program" (...
How to pass payload via JSON file for curl?
...not some other error is probably because the server can't extract the auth_token from your request.
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What is the difference between a strongly typed language and a statically typed language?
...but it will never refer to an Integer or a List. That's static typing.
In PHP:
$s = "abcd"; // $s is a string
$s = 123; // $s is now an integer
$s = array(1, 2, 3); // $s is now an array
$s = new DOMDocument; // $s is an instance of the DOMDocument class
That's dynamic typi...
Stop setInterval
...iv,3000);
});
function updateDiv(){
$.ajax({
url: 'getContent.php',
success: function(data){
$('.square').html(data);
},
error: function(){
clearInterval(interval); // stop the interval
$.playSound('oneday.wav');
$(...