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How do I discover memory usage of my application in Android?
...fficult to understand area. In fact the chances of you actually correctly interpreting whatever numbers you get is extremely low. (Pretty much every time I look at memory usage numbers with other engineers, there is always a long discussion about what they actually mean that only results in a vagu...
Safe (bounds-checked) array lookup in Swift, through optional bindings?
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for index in -20...20 {
if let item = array[safe: index] {
print(item)
}
}
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Calling C++ class methods via a function pointer
How do I obtain a function pointer for a class member function, and later call that member function with a specific object? I’d like to write:
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How to get image height and width using java?
...imple and handy.
BufferedImage bimg = ImageIO.read(new File(filename));
int width = bimg.getWidth();
int height = bimg.getHeight();
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How to handle Objective-C protocols that contain properties?
...en in the modern runtime, or you need to duplicate the "@property" in your interface definition to get auto-synthesis.
– Jeffrey Harris
Jun 18 '13 at 16:34
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Accessing a Dictionary.Keys Key through a numeric index
I'm using a Dictionary<string, int> where the int is a count of the key.
15 Answers
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JSON.stringify without quotes on properties?
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So, what you are looking for is basically an object inspector not a JSON converter. JSON format specifies that all properties must be enclosed in double quotes. Hence there will not be JSON converters to do what you want as that is simply not a JSON format.Specs here:
https://developer.mozilla.org...
C++, variable declaration in 'if' expression
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As of C++17 what you were trying to do is finally possible:
if (int a = Func1(), b = Func2(); a && b)
{
// Do stuff with a and b.
}
Note the use of ; of instead of , to separate the declaration and the actual condition.
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Implements vs extends: When to use? What's the difference?
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extends is for extending a class.
implements is for implementing an interface
The difference between an interface and a regular class is that in an interface you can not implement any of the declared methods. Only the class that "implements" the interface can implement the methods. The C++ ...
How can I initialize a C# List in the same line I declare it. (IEnumerable string Collection Example
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It's not quite translated into that, at least not in general. The assignment to the variable happens after all the Add calls have been made - it's as if it uses a temporary variable, with list = tmp; at the end. This can be important if you're reassig...