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Why is #!/usr/bin/env bash superior to #!/bin/bash?
...putting it directly in your shebang—but I'd recommend against it because scripts and programs all have lives beyond what we initially believe they will have.
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Can JavaScript connect with MySQL?
Can JavaScript connect with MySQL? If so, how?
18 Answers
18
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How to know if other threads have finished?
...want to start 15 downloads and simply remove status from the status bar or alert the user when a download has completed, in which case a callback would work better.
– digitaljoel
Mar 31 '09 at 18:47
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What does $.when.apply($, someArray) do?
...ected, even if there are other deferreds that are pending.
Heres the full script (I recommend http://jsfiddle.net/):
var data = [1,2,3,4]; // the ids coming back from serviceA
var processItemsDeferred = [];
for(var i = 0; i < data.length; i++){
processItemsDeferred.push(processItem(data[i]))...
Using the RUN instruction in a Dockerfile with 'source' does not work
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Eh? If you source a script inside a shell that only exists for the command, it's not able to have a lasting effect on any future commands run, assuming that the sum total of its action is setting environment variables. So why would you use sourc...
Is it possible to simulate key press events programmatically?
...charCodeAt(0) });
}
$(function() {
$('body').keypress(function(e) {
alert(e.which);
});
simulateKeyPress("e");
});
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淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...能在数据库层做全局排队是最理想的，淘宝的数据库团队开发了针对这种MySQL的InnoDB层上的patch，可以做到数据库层上对单行记录做到并发排队，如图6所示。
重要的几个：其中关键部分包括：
这个热点服务后台抓取热...
Dialog throwing "Unable to add window — token null is not for an application” with getApplication()
My Activity is trying to create an AlertDialog which requires a Context as a parameter. This works as expected if I use:
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How Python web frameworks, WSGI and CGI fit together
I have a Bluehost account where I can run Python scripts as CGI. I guess it's the simplest CGI, because to run I have to define the following in .htaccess :
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What is the “assert” function?
...ate is used. If the variable ever does become negative, the assert() macro alerts you. You can then examine the relevant code to locate the cause of the problem.
To see how assert() works, run the sample program below. If you enter a nonzero value, the program displays the value and terminates norm...