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STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
struct a
{
char* pName;
int m_a;
};
...
map<a, int> mp;
a a1;
a1.m_a = 100;
a1.pName = "a1";
a a2;
a2.m_a = 200;
a2.pName = "a2";
mp.insert(std::make_pair(a1, 1));
mp.insert(std::make_pair(a2, 1));
编译出错
初始...
HTML5 record audio to file
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This is a simple JavaScript sound recorder and editor. You can try it.
https://www.danieldemmel.me/JSSoundRecorder/
Can download from here
https://github.com/daaain/JSSoundRecorder
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imp...
Rotating videos with FFmpeg
I have been trying to figure out how to rotate videos with FFmpeg. I am working with iPhone videos taken in portrait mode. I know how to determine the current degrees of rotation using MediaInfo (excellent library, btw) but I'm stuck on FFmpeg now.
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__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...q
{
int a;
char b;
struct n qn;
char c;
}__attribute__((aligned(8))) qq;
int main()
{
printf("sizeof(int)=%d,sizeof(short)=%d.sizeof(char)=%d/n",sizeof(int),sizeof(short),sizeof(char));
printf("pp=%d,qq=%d /n", sizeof(pp),sizeof(qq));
return 0;
}
输出结果：
sizeof(int)=4,siz...
Using .NET, how can you find the mime type of a file based on the file signature not the extension
I am looking for a simple way to get a mime type where the file extension is incorrect or not given, something similar to this question only in .Net.
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Python multiprocessing PicklingError: Can't pickle
...= _
&gt;&gt;&gt; res.get()
101
Get pathos (and if you like, dill) here:
https://github.com/uqfoundation
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基于PECL OAuth打造微博应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...致代码如下：
<?php
session_start();
$request_token_url = 'https://open.t.qq.com/cgi-bin/request_token';
$authorize_url = 'https://open.t.qq.com/cgi-bin/authorize';
$access_token_url = 'https://open.t.qq.com/cgi-bin/access_token';
$oauth = new OAuth(
'YOUR_CONSUMER_KEY',...
Error in plot.new() : figure margins too large, Scatter plot
... the margin error:
# eg. for tiff()
par(mar=c(1,1,1,1))
tiff(filename = "qq.tiff",
res = 300, # the margin error.
compression = c( "lzw") )
# qq plot for genome wide association study (just an example)
qqman::qq(df$rawp, main = "Q-Q plot of...
Data structure: insert, remove, contains, get random element, all at O(1)
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Consider a data structure composed of a hashtable H and an array A. The hashtable keys are the elements in the data structure, and the values are their positions in the array.
insert(value): append the value to array and let i be its index in A. Set H...
Can't Find Theme.AppCompat.Light for New Android ActionBar Support
I am trying to implement the new ActionBar support library that was released by Google a couple days ago. In the past, I have successfully implemented ActionBarSherlock without any issues using the same method listed on Google Developer's Support Library Setup page - using the guide on how to i...