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How do I suspend painting for a control and its children?

...o that - SuspendLayout and ResumeLayout aren't enough. How do I suspend painting for a control and its children? 10 Answer...
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How to create NS_OPTIONS-style bitmask enumerations in Swift?

In Apple's documentation about interacting with C APIs, they describe the way NS_ENUM -marked C-style enumerations are imported as Swift enumerations. This makes sense, and since enumerations in Swift are readily provided as the enum value type it's easy to see how to create our own. ...
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Implement touch using Python?

...t simplify the code: from __future__ import (absolute_import, division, print_function) import os if os.path.exists(fname): try: os.utime(fname, None) # Set access/modified times to now except OSError: pass # File deleted between exists() and utime() calls # (or no permissi...
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How to take a screenshot programmatically on iOS

I want a screenshot of the image on the screen saved into the saved photo library. 20 Answers ...
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Why malloc+memset is slower than calloc?

...take small allocations (anything from 1 byte to 100s of KB) and group them into larger pools of memory. For example, if you allocate 16 bytes, malloc() will first try to get 16 bytes out of one of its pools, and then ask for more memory from the kernel when the pool runs dry. However, since the pr...
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Static function variables in Swift

...t. Try declaring a private struct with static variable. func foo() -> Int { struct Holder { static var timesCalled = 0 } Holder.timesCalled += 1 return Holder.timesCalled } 7> foo() $R0: Int = 1 8> foo() $R1: Int = 2 9> foo() $R2: Int = 3 ...
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How to get an enum which is created in attrs.xml in code

...6 in your example if (a.hasValue(R.styleable.IconView_icon)) { int value = a.getInt(R.styleable.IconView_icon, 0)); } a.recycle(); } If you want the value into an enum you would need to either map the value into a Java enum yourself, e.g.: private enum Format { enum_name_...
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Why does sizeof(x++) not increment x?

...ype. The size is determined from the type of the operand. The result is an integer. If the type of the operand is a variable length array type, the operand is evaluated; otherwise, the operand is not evaluated and the result is an integer constant. ...
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How to determine if a type implements a specific generic interface type

...also be done with the following LINQ query: bool isBar = foo.GetType().GetInterfaces().Any(x => x.IsGenericType && x.GetGenericTypeDefinition() == typeof(IBar<>)); share | imp...
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Why is null an object and what's the difference between null and undefined?

... null true A common way of checking whether a variable has a value is to convert it to boolean and see whether it is true. That conversion is performed by the if statement and the boolean operator ! (“not”). function foo(param) { if (param) { // ... } } function foo(param) { ...