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How can my iphone app detect its own version number?
I'm writing an iPhone app. It's already been published, but I would like to add a feature where its version number is displayed.
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What's wrong with overridable method calls in constructors?
I have a Wicket page class that sets the page title depending on the result of an abstract method.
7 Answers
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Why is Double.MIN_VALUE in not negative
...Double.MIN_VALUE is not actually the minimum value that Doubles can take? It is a positive value, and a Double can of course be negative.
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Is it possible for a unit test to assert that a method calls sys.exit()
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Yes. sys.exit raises SystemExit, so you can check it with assertRaises:
with self.assertRaises(SystemExit):
your_method()
Instances of SystemExit have an attribute code which is set to the proposed exit status, and the context ma...
Read a file line by line assigning the value to a variable
...ile in a loop. Explanation:
IFS= (or IFS='') prevents leading/trailing whitespace from being trimmed.
-r prevents backslash escapes from being interpreted.
Or you can put it in a bash file helper script, example contents:
#!/bin/bash
while IFS= read -r line; do
echo "Text read from file: $l...
Finding index of character in Swift String
It's time to admit defeat...
32 Answers
32
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memcpy() vs memmove()
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I'm not entirely surprised that your example exhibits no strange behaviour. Try copying str1 to str1+2 instead and see what happens then. (May not actually make a difference, depends on compiler/libraries.)
In general, memcpy is implemented in a simple (but fast) manner. Si...
Android -Starting Service at Boot Time
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Create a BroadcastReceiver and register it to receive ACTION_BOOT_COMPLETED. You also need RECEIVE_BOOT_COMPLETED permission.
Read: Listening For and Broadcasting Global Messages, and Setting Alarms
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What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?
Can anyone give a definitive explanation on the relationship between UIView's setNeedsLayout , layoutIfNeeded and layoutSubviews methods? And an example implementation where all three would be used. Thanks.
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Compiling/Executing a C# Source File in Command Prompt
...ine)
If you have more than one source module to be compiled, you can put it on that same command line. If you have other assemblies to reference, use /r:AssemblyName.dll .
Ensure you have a static Main() method defined in one of your classes, to act as the "entry point".
To run the resulting EX...