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Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
..._time/posix_time/posix_time.hpp>
asio的异步函数会在一个异步操作完成后被回调.这里我们定义了一个将被回调的函数.
void print(const asio::error& /*e*/)
{
std::cout << "Hello, world! ";
}
int main()
{
asio::io_service io;
asio::deadline_timer t...
Re-sign IPA (iPhone)
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@ValerioSantinelli You'll need to carry over entitlements from the previous code signing. FWIW push notifications will not work without entitlements. After unzipping: /usr/bin/codesign -d --entitlements :entitlements.plist /Payload/...
PDOException SQLSTATE[HY000] [2002] No such file or directory
...sql/mysql.sock'" to config/database.php
– Ángel Carlos del Pozo Muela
Jan 31 '18 at 12:23
hello community , i am gett...
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
...象进行了大小比较，但是我们自定义的key类型a并没有对<操作符进行重载，于是报错。
那么map容器和less有什么关系呢，我们的代码怎么回链接到这里了？
看看map的模板定义就知道了：
template<class _Kty,
class _Ty,
class _...
CGContextDrawImage draws image upside down when passed UIImage.CGImage
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Good point, though mostly you don't need custom alpha levels for drawing an image (typically those are baked into images ahead of time for things that need alpha). Basically my motto is, use a little code as you can because more code means more...
What does the brk() system call do?
...
In the diagram you posted, the "break"—the address manipulated by brk and sbrk—is the dotted line at the top of the heap.
The documentation you've read describes this as the end of the "data segment" because in traditional (pre-shared-lib...
Repeat a task with a time delay?
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You should use Handler's postDelayed function for this purpose. It will run your code with specified delay on the main UI thread, so you will be able to update UI controls.
private int mInterval = 5000; // 5 seconds by default, can be changed later
...
Best way to determine user's locale within browser
...as the user's preferred language(s). On IE you instead get systemLanguage (OS installed language), browserLanguage (same as language) and userLanguage (user configured OS region), which are all similarly unhelpful.
If I had to choose between those properties, I'd sniff for userLanguage first, falli...
How can I extract embedded fonts from a PDF as valid font files?
...eral options. All these methods work on Linux as well as on Windows or Mac OS X. However, be aware that most PDFs do not include to full, complete fontface when they have a font embedded. Mostly they include just the subset of glyphs used in the document.
Using pdftops
One of the most frequently us...
How can I launch multiple instances of MonoDevelop on the Mac?
...ew MonoDevelop instance to work on a different project on the Mac, and the OS is currently preventing me from opening a new instance.
...