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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
...aded true operator.
The || operator will invoke the true operator to decide whether to evaluate the right-hand side, and then the if statement will invoke the true operator to decide whether to evaluate the its body. For a normal bool, these will always return the same result and so exactly one ...
What's the difference between using CGFloat and float?
...t, including the kernel and user applications. Apple's 64-bit Transition Guide for Cocoa is a useful resource.
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What does “mro()” do?
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Just like @Alex Martelli said and the content of python-history.blogspot.com/2010/06/…, the mro attribute should be add when the new class are used, as only when Python 2.2 MRO and Python 2.3 MRO(C3) are used.
– andy
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log4j logging hierarchy order
...ownvoted for your poor terminology: going down, "visibility" works, item. Didn't you wish to explain how logger configuration affects the actual logging (passing log events)? Please consider another update. BTW: the table in the official documentation (at the end of the section) differs in treating ...
C++ equivalent of Java's toString?
... object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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Python Logging (function name, file name, line number) using a single file
... be in the order they occurred in the process.
Next up: (2). locals() provides a dict of the current scope. Thus, in a method that has no other arguments, you have self in scope, which contains a reference to the current instance. The trick being used that is stumping you is the string formatting u...
Microsoft Roslyn vs. CodeDom
...o support designers (a la WinForms). Because CodeDom was an attempt at providing a unified model that can generate code in C#, VB, and other languages, it lacks high fidelity with any of the languages that it supports (that's why you can't create a switch statement with CodeDom). CSharpCodeProvider....
How do I create a custom Error in JavaScript?
...n prototype to Error.prototype instead of new Error() like Nicholas Zakas did in his article, I created a jsFiddle with the code below:
function NotImplementedError(message) {
this.name = "NotImplementedError";
this.message = (message || "");
}
NotImplementedError.prototype = Error.prot...
How do I write a custom init for a UIView subclass in Swift?
...elf.s = s
self.i = i
super.init(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
}
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Why is it possible to recover from a StackOverflowError?
...nt of which exception is thrown and why. Since you catch the exception outside of the first call to foo(), the thousands of foo stack frames that filled the stack have all been unwound and most of the stack is free to be used again.
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