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What is the purpose of willSet and didSet in Swift?
...named stored property
Example 1 (read only property) - with warning:
var test : Int {
get {
return test
}
}
This will result in a warning because this results in a recursive function call (the getter calls itself).The warning in this case is "Attempting to modify 'test' within it...
How to reliably open a file in the same directory as a Python script
...path that python was typed.
C:\Documents and Settings\Admin>python test.py
sys.argv[0]: test.py
C:\Documents and Settings\Admin>python "C:\Documents and Settings\Admin\test.py"
sys.argv[0]: C:\Documents and Settings\Admin\test.py
Ok so know you can get the file name, great b...
What's the difference between RSpec and Cucumber? [closed]
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RSpec and Cucumber are both testing frameworks. RSpec includes traditional Unit Testing (which means testing a class or part of the application in isolation from the rest of the application. So your model does what your model is supposed to do, the cont...
What's better at freeing memory with PHP: unset() or $var = null
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@alex, you can sort of do that with unset. For example "$test = 4; (unset) $test;" - strange but true, and it returns the value of $test before unsetting it. Regardless, the PHP manual does confirm that it is a language construct.
– thomasrutter
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C# pattern to prevent an event handler hooked twice [duplicate]
...sender).Document.Click -= new System.Windows.Forms.HtmlElementEventHandler(testii);
((System.Windows.Forms.WebBrowser)sender).Document.Click += new System.Windows.Forms.HtmlElementEventHandler(testii);
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Array.Copy vs Buffer.BlockCopy
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In my own testing, Array.Copy() is very similar in performance to Buffer.BlockCopy(). Buffer.BlockCopy is consistently < 10% faster for me when dealing with 640 element byte arrays (which is the sort I'm most interested in). But you...
What does %~d0 mean in a Windows batch file?
... %0 will be surrounded by quotes. For example, if you save this file as c:\test.bat:
@echo %0
@pause
Double-clicking it will open a new command prompt with output:
"C:\test.bat"
But if you first open a command prompt and call it directly from that command prompt, %0 will refer to whatever you'...
What is the instanceof operator in JavaScript?
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instanceof
The Left Hand Side (LHS) operand is the actual object being tested to the Right Hand Side (RHS) operand which is the actual constructor of a class. The basic definition is:
Checks the current object and returns true if the object
is of the specified object type.
Here are some good ...
How can I get device ID for Admob
...emulator then there is no ID. just use the AdManager method and set it to TEST_EMULATOR like the logcat says. If you run on an actual device with usb debugging and watch the logcat, the ID will appear in there.
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How to delete a file after checking whether it exists
How can I delete a file in C# e.g. C:\test.txt , although apply the same kind of method like in batch files e.g.
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