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JavaScript: Create and save file [duplicate]
...e dialog for the user to choose where to save the file. It would be great if it worked in all browsers, but it has to work in Chrome. I want to do this all client-side.
...
How to add hyperlink in JLabel?
... frame.setVisible(true);
}
private static void open(URI uri) {
if (Desktop.isDesktopSupported()) {
try {
Desktop.getDesktop().browse(uri);
} catch (IOException e) { /* TODO: error handling */ }
} else { /* TODO: error handling */ }
}
...
C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...ount *Ref() {
++cnt_;
return this;
}
void Deref() {
if (--cnt_ == 0) {
delete this;
}
}
private:
std::unique_ptr<T> ptr_;
std::atomic_uint32_t cnt_;
};
仔细观察可以发现：
每一次的读取操作对应引用计数中增加的数值 1；
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How to close activity and go back to previous activity in android
...
You have set android:noHistory = "true" for MainActivity inside AndroidManifest.xml which causes MainActivity to finish automatically on pressing the back key.
OR
Before switching to your 'SettingsActivity', you have called finish() in your MainActivity, which kills it. When you press back button...
static constructors in C++? I need to initialize private static objects
...ts private members. I could add code in the constructor that checks to see if the vector is initialized, and initialize it if it's not, but that introduces many necessary checks and doesn't seem like the optimal solution to the problem.
...
Rails Model, View, Controller, and Helper: what goes where?
...equests and works out what data (Models) to show and what Views to render. If you are in doubt about whether code should go in the controller, then it probably shouldn't. Keep your controllers skinny.
View: The view should only contain the minimum code to display your data (Model), it shouldn't do ...
PHP exec() vs system() vs passthru()
What are the differences?
5 Answers
5
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Where should I put the log4j.properties file?
...ntioned previously in this thread.
Put log4j-xx.jar under WEB-INF\lib
Test if log4j was loaded: add -Dlog4j.debug @ the end of your java options of tomcat
Hope this will help.
rgds
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improv...
Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...er suits their needs
cost
more platfrom-independant
So I'll discuss the differences between canvas and webGL APIs regarding these qualities.
Both canvas and webGL are JavaScript APIs. They are pretty much the same regarding integration (binding). They are both supported by a number of libraries...
How can I access the MySQL command line with XAMPP for Windows?
... up "cmd", and type:
cd c:\xampp\mysql\bin
mysql.exe -u root --password
If you want to use mysqldump.exe, you should also find it there.
Log into your mysql server, and start typing your commands.
Hope it helps...
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