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Looping in a spiral
...he elements of an NxM matrix (N and M are odd). I came up with a solution, but I wanted to see if my fellow SO'ers could come up with a better solution.
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Generate list of all possible permutations of a string
How would I go about generating a list of all possible permutations of a string between x and y characters in length, containing a variable list of characters.
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Python Pandas: Get index of rows which column matches certain value
Given a DataFrame with a column "BoolCol", we want to find the indexes of the DataFrame in which the values for "BoolCol" == True
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Is it possible to allow didSet to be called during initialization in Swift?
...e it within your init-Method:
class SomeClass {
var someProperty: AnyObject! {
didSet {
//do some Stuff
}
}
init(someProperty: AnyObject) {
setSomeProperty(someProperty)
}
func setSomeProperty(newValue:AnyObject) {
self.someProperty ...
When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
The following figure (from the official doc ) describes the well-known lifecycle of an Android activity:
5 Answers
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How can I add a help method to a shell script?
How do I check if a -h attribute has been passed into a shell script? I would like to display a help message when a user calls myscript.sh -h .
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How can a time function exist in functional programming?
I've to admit that I don't know much about functional programming. I read about it from here and there, and so came to know that in functional programming, a function returns the same output, for same input, no matter how many times the function is called. It's exactly like a mathematical function w...
Java Try Catch Finally blocks without Catch
I'm reviewing some new code. The program has a try and a finally block only. Since the catch block is excluded, how does the try block work if it encounters an exception or anything throwable? Does it just go directly to the finally block?
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Git pull without checkout?
I'm used to running git pull and other commands from within a branch I'm working on. But I have set up a development server that several people work on, so I don't want to have to switch branches when I do it. If I want to update an existing branch on the dev server from the github repository we a...
How to get name of calling function/method in PHP? [duplicate]
I am aware of function debug_backtrace , but I am looking for some ready to use implementation of function like GetCallingMethodName() ? It would be perfect if it gave method's class too (if it is indeed a method).
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