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Resetting generator object in Python
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121
Another option is to use the itertools.tee() function to create a second version of your genera...
How to filter SQL results in a has-many-through relation
...greSQL 9.0 on Debian Squeeze with decent RAM and settings.
6.000 students, 24.000 club memberships (data copied from a similar database with real life data.)
Slight diversion from the naming schema in the question: student.id is student.stud_id and club.id is club.club_id here.
I named the queries a...
How can mixed data types (int, float, char, etc) be stored in an array?
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244
You can make the array elements a discriminated union, aka tagged union.
struct {
enum { ...
Max length for client ip address [duplicate]
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273
For IPv4, you could get away with storing the 4 raw bytes of the IP address (each of the numbe...
Detect IF hovering over element with jQuery
...(":hover"); // returns true or false
Example: http://jsfiddle.net/Meligy/2kyaJ/3/
(This only works when the selector matches ONE element max. See Edit 3 for more)
.
Edit 1 (June 29, 2013): (Applicable to jQuery 1.9.x only, as it works with 1.10+, see next Edit 2)
This answer was the best solut...
json_encode sparse PHP array as JSON array, not JSON object
...ng this behaviour because your array is not sequential - it has keys 0 and 2, but doesn't have 1 as a key.
Just having numeric indexes isn't enough. json_encode will only encode your PHP array as a JSON array if your PHP array is sequential - that is, if its keys are 0, 1, 2, 3, ...
You can reinde...
Get fragment (value after hash '#') from a URL in php [closed]
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If you want to get the value after the hash mark or anchor as shown in a user's browser: This i...
Make a number a percentage
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204
A percentage is just:
(number_one / number_two) * 100
No need for anything fancy:
var numb...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...roMQ)进行局域网内网络通信本文内容摘要：1）安装zeromq、2）实例说明使用zmq进行网络间的消息发送和接收首先在机器中安装zmq库步骤如下：1）下载zeromq的源代码，Zer...本文内容摘要：1）安装zeromq、2）实例说明使用zmq进行网络...
What is the fastest integer division supporting division by zero no matter what the result is?
... pushl %ebp
xorl %eax, %eax
movl %esp, %ebp
movl 12(%ebp), %edx
testl %edx, %edx
sete %al
addl %edx, %eax
movl 8(%ebp), %edx
movl %eax, %ecx
popl %ebp
movl %edx, %eax
sarl $31, %edx
idivl %ecx
ret
As this tur...