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Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#define kPidFileName "app.pid"
bool enter_app_singleton() {
int fd = open(kPidFileName, O_RDWR | O_TRUNC);
if (fd == -1) {
//对应的锁...
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
...执行检查）
测试代码如下：
#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...
APP Inventor 空字符串怎么表示？ - App应用开发 - 清泛IT社区，为创新赋能！
Q：APP Inventor 空字符串怎么表示？
A：文本下的字符串，不填写任何内容，就是空字符串。
详见文档：https://www.fun123.cn/reference/blocks/text.html#string
WheelView：滚轮选择框扩展 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
WheelView, like number picker, but can be any strings.original code from WheelView: 效果类似android4.0以上原生的DatePicker 18Thanks @wildcontrol to sponsor this extensionDemo picture:this demo used 3 extensionsAll the blocks
来源：https://wangsk789.github.io/wheelview/
What are “signed” cookies in connect/expressjs?
...d cookie is.
val is of course the value of the cookie, and secret is the string you add as option to cookie-parser
https://github.com/visionmedia/node-cookie-signature/blob/master/index.js#L16
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How do different retention policies affect my annotations?
...ionPolicy.RUNTIME)
@interface RetentionRuntime {}
public static void main(String[] args) {
@RetentionSource
class B {}
assert B.class.getAnnotations().length == 0;
@RetentionClass
class C {}
assert C.class.getAnnotations().length == 0;
@RetentionRuntime
class D {}
...
How to RedirectToAction in ASP.NET MVC without losing request data
... In mvc2 you should be able to go RedirectToAction("Form"), i.e. name as a string, although I loosely recall that MVC 2 or 3 introduced a helper attribute similar to that in MVCContrib if you are keen to go searching.
– Matt Mitchell
Dec 19 '10 at 1:29
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Fastest way to convert Image to Byte array
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public static byte[] ReadImageFile(string imageLocation)
{
byte[] imageData = null;
FileInfo fileInfo = new FileInfo(imageLocation);
long imageFileLength = fileInfo.Length;
FileStream fs = new FileStream(imageLocation, FileM...
Jsoup SocketTimeoutException: Read timed out
...y setting .userAgent(Opera) worked for me.
So I used Connection userAgent(String userAgent) method of Connection class to set Jsoup user agent.
Something like:
Jsoup.connect("link").userAgent("Opera").get();
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What is the meaning of erb?
...all within your Ruby applications and Rake tasks. This library accepts any string as a template, and imposes no limitations on the source of the template. You may define a template entirely within your code, or store it in an external location and load it as required. This means that you can keep te...