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What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
...w what these are, you should check HTTP protocol and learn a little. Internally these two functions use jQuery.ajax but they use particular settings that you don't have to set yourself thus simplifying GET or POST request compared to using jQuery.ajax. GET and POST being the most used HTTP methods a...
Reconnection of Client when server reboots in WebSocket
...in amount of disconnects will cause a stack overflow. That is because you call start recursively, without ever returning.
– Forivin
Dec 3 '16 at 14:14
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实时开发、测试和调试工具 · App Inventor 2 中文网
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Android 日志和 adb（高级）
如果你在 Android 设备上遇到问题，有时可以通过检查 Android 日志来获取信息。 例如，如果你的应用程序空间不足，则会记录在日志中。 日志中的消息通常难以理解，但是你可以使用通知程序组件使你...
How do I protect Python code? [closed]
...ecutable is well-known, and the Python byte-codes are well understood.
Usually in cases like this, you have to make a tradeoff. How important is it really to protect the code? Are there real secrets in there (such as a key for symmetric encryption of bank transfers), or are you just being paranoi...
curl_exec() always returns false
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+1: Simple and straight trouble-shooting for curl in PHP on curl_exec FALSE return. - Curl Verbose Mode in PHP example
– hakre
Nov 9 '12 at 20:10
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Asynchronously load images with jQuery
...d a REST image service. If you have your own webservice, you can add a JSP/PHP REST script that offers images in Base64 encoding. Now how is that useful? I came across a cool new syntax for image encoding:
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhE..."/>
So you can load the Image...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...gnored as a failed SQL statement. You are welcome to fail SQL statements all you want and PostgreSQL won't stop you.
Stay being in a transaction, but when you detect that the first SQL has failed, either rollback/re-start or commit/restart the transaction. Then you can continue failing as many S...
Best way to store password in database [closed]
...d thing you are thinking about this and it is a good question, this is actually a duplicate of these questions (at least):
How to best store user information and user login and password
Best practices for storing database passwords
Salting Your Password: Best Practices?
Is it ever ok to store pass...
img tag displays wrong orientation
... Why in the world do images even have orientation metadata? If you really wanted to rotate the picture then wouldn't you just shift around the pixels and swap the width for the height?
– Jack Giffin
Oct 29 '17 at 1:02
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How to detect if JavaScript is disabled?
...gt; to unhide (no reflow there if JS enabled). Surprisingly, this works in all modern browsers, and even in IE6
– Piskvor left the building
Jul 16 '10 at 14:31
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