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Create an index on a huge MySQL production table without table locking
I need to create an index on a ~5M rows MySQL table. It is a production table, and I fear a complete block of everything if I run a CREATE INDEX statement...
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Get current time in seconds since the Epoch on Linux, Bash
I need something simple like date , but in seconds since 1970 instead of the current date, hours, minutes, and seconds.
7 ...
Center a map in d3 given a geoJSON object
Currently in d3 if you have a geoJSON object that you are going to draw you have to scale it and translate it in order to get it to the size that one wants and translate it in order to center it. This is a very tedious task of trial and error, and I was wondering if anyone knew a better way to obtai...
Get Output From the logging Module in IPython Notebook
When I running the following inside IPython Notebook I don't see any output:
8 Answers
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What's the difference between a single precision and double precision floating point operation?
What is the difference between a single precision floating point operation and double precision floating operation?
11 Answ...
Why should we typedef a struct so often in C?
I have seen many programs consisting of structures like the one below
15 Answers
15
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Trying to login to RDP using AS3
I am trying to login to RDP using AS3 (air). I am doing ok, considering the lack of resources out there to understand the actual process.
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What's the best way to send a signal to all members of a process group?
I want to kill a whole process tree. What is the best way to do this using any common scripting languages? I am looking for a simple solution.
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Any way to properly pretty-print ordered dictionaries?
I like the pprint module in Python. I use it a lot for testing and debugging. I frequently use the width option to make sure the output fits nicely within my terminal window.
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C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...代码copy过去编译和调试，我把代码列在下面：#include <stdio.h>
struct str{
int len;
char s[0];
};
struct foo {
struct str *a;
};
int main(int argc, char** argv) {
struct foo f={0};
if (f.a->s) {
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