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stdbool.h C99标准杂谈 - c++1y / stl - 清泛IT社区，为创新赋能！
...的预定义宏：
#define true 1
#define false 0
#define bool _Bool
typdef int _Bool
但是很遗憾，Visual C++不支持C99，至少现在来看是没这个计划(参见http://en.wikipedia.org/wiki/C99)。所以stdbool.h就不能在vc里面用：
http://msdn.microsoft.com/en-us/library/02...
C#泛型(List)中基类和子类 怎么转换？ - .NET(C#) - 清泛IT论坛，有思想、有深度
...Foo，Foo支持所有子类列表。
方法一：
Foo(childList.Select(p => p as BaseClass).ToList())
上述 Select 转换是双向的，基类转子类也没问题。
方法二：
List<BaseClass> baseList = new List<BaseClass>();
baseList.AddRange(childList);
Foo(baseLis...
gcc自带内存泄漏、内存越界检测工具 - asan - C/C++ - 清泛网 - 专注C/C++及内核技术
...试代码如下：
#include <iostream>
#include <string.h>
using namespace std;
int main() {
void* p = malloc(5);
memcpy(p, "123456", 6);
return 0;
}
运行结果如下：
报告非常详细，内存异常发生的行号都能看到，也可以识别出来野指针。强烈建...
【解决】php报错：Can not connect to MySQL server - 更多技术 - 清泛网 -...
【解决】php报错：Can not connect to MySQL server遇到这种情况，如果是mysql安装问题，可以通过命名测试一下：mysql -uroot -p如果用户名密码验证能够正常连接，但php报错的话，那大概率是因为你访问的库没有被创建，创建一下就OK了。...
使用自带的web浏览器播放视频的链接，播放哔哩哔哩里上传的视频，因为是...
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[url=]上传图片[/url][url=]网络图片[/url]
&lt;iframe src=&quot;//player.bilibili.com/player.html?isOutside=true&amp;aid=933682256&amp;bvid=BV1CT4y1o7De&amp;cid=428988802&amp;p=1&quot; scrolling=&quot;no&quot; border=&quot;0&quot; frameborder=&quot;no&quot; framespacing=&quot;0&quot; allowf...
How to get String Array from arrays.xml file
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Just change the code to:
package com.xtensivearts.episode.seven;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class Episode7 extends ListActivity {
String[] mTestArray;
/** Called when the activity is first created. */
@Overri...
Difference between “git add -A” and “git add .”
The command git add [--all|-A] appears to be identical to git add . . Is this correct? If not, how do they differ?
11 An...
Is it possible to listen to a “style change” event?
...back function is a MutationRecord object that lets you get hold of the old and new style values.
Support is good in modern browsers including IE 11+.
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Who is “us” and who is “them” according to Git?
After a Git rebase, and in other circumstances, you can find some files marked as deleted by us in the git status report. Who is us according to Git and why?
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Convert a list of data frames into one data frame
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since it's 2018 and dplyr is both fast and a solid tool to use, I've changed this to the accepted answer. The years, they fly by!
– JD Long
Jan 12 '19 at 12:03
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