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What are deferred objects?
...As of jQuery 1.5, the Deferred object provides a way to register multiple callbacks into self-managed callback queues, invoke callback queues as appropriate, and relay the success or failure state of any synchronous or asynchronous function.
Deferred Methods:
deferred.done()
Add handlers to be cal...
Event system in Python
...r methods', which is a
simple implementation of the Observer pattern.
Basically, the handler methods (callables) are stored in an array and are each called when the event 'fires'.
Publish-Subscribe
The disadvantage of Observer event systems is that you can only register the handlers on the actual Ev...
Rank function in MySQL
... (SELECT @curRank := 0) r
ORDER BY age;
The (SELECT @curRank := 0) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT I...
外媒评本轮科技泡沫：创业公司首当其冲 九成将消失 - 资讯 - 清泛网 - 专注...
...团队，这个团队只能以财报电话会议内容以及各种棘手的问题为依据，对私营公司进行投资——把它们当作是上市公司。
总之，越来越多的日常投资者正暴露给后期私营科技公司，无论结果是好还是坏。据博伊德介绍，作为富...
How can I remove a key and its value from an associative array?
...oop, then you need to prepend an ampersand to your enumeration variable to allow write access.
– FreeAsInBeer
Jul 30 '12 at 21:20
1
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how to check and set max_allowed_packet mysql variable [duplicate]
...
max_allowed_packet
is set in mysql config, not on php side
[mysqld]
max_allowed_packet=16M
You can see it's curent value in mysql like this:
SHOW VARIABLES LIKE 'max_allowed_packet';
You can try to change it like this, but it's unlikely this will work on shared hostin...
Is there a way to stop Google Analytics counting development work as hits?
...se of Google Analytics. Only problem is that I am sure that it is counting all my development work as hits. Seeing as I probably see some of those pages a hundred times a day it will really skew my readings. Is there a way to turn it off from a particular IP address or is this something that should ...
Convert a PHP script into a stand-alone windows executable
I want to automate a fairly simple task. For this I have written a small PHP script which I run from the command line using PHP-CLI. Now I want to hand over this script to someone but I do not want to:
...
Turn off deprecated errors in PHP 5.3
My server is running PHP 5.3 and my WordPress install is spitting these errors out on me, causing my session_start() to break.
...
MySQL和MongoDB设计实例进行对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...档中相关说明。
MySQL需要多个表，多次查询才能搞定的问题，MongoDB只需要一个表，一次查询就能搞定，对比完成，相对MySQL而言，MongoDB显得更胜一筹，至少本例如此
MySQL MongoDB