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Why do Objective-C files use the .m extension?

Since I started learning Objective-C and Cocoa, I've been wondering why they have chosen the extension .m for the implementation files - was it supposed to mean something, or was it just a random letter? ...
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Remove NA values from a vector

I have a huge vector which has a couple of NA values, and I'm trying to find the max value in that vector (the vector is all numbers), but I can't do this because of the NA values. ...
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Spring RestTemplate - how to enable full debugging/logging of requests/responses?

I have been using the Spring RestTemplate for a while and I consistently hit a wall when I'am trying to debug it's requests and responses. I'm basically looking to see the same things as I see when I use curl with the "verbose" option turned on. For example : ...
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Backbone View: Inherit and extend events from parent

...ap this.events & ParentView.prototype.events otherwise if both define handlers on the same event the Parent's handler will override the Child's. – soldier.moth Apr 6 '12 at 0:03 ...
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Is there a way to make mv create the directory to be moved to if it doesn't exist?

So, if I'm in my home directory and I want to move foo.c to ~/bar/baz/foo.c , but those directories don't exist, is there some way to have those directories automatically created, so that you would only have to type ...
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Defining private module functions in python

... more forcefully... but, in the end, it still depends on social convention and consensus: Python's introspection is forceful enough that you can't handcuff every other programmer in the world to respect your wishes. ((Btw, though it's a closely held secret, much the same holds for C++: with most co...
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where is gacutil.exe?

I am using Windows 7 Enterprise 32 bit. I have used Windows command line, and also used VSTS 2008 command line, but when executing gacutil.exe, there is command not found error. ...
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How to extract the substring between two markers?

Let's say I have a string 'gfgfdAAA1234ZZZuijjk' and I want to extract just the '1234' part. 18 Answers ...
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Multiple linear regression in Python

... Here is a little work around that I created. I checked it with R and it works correct. import numpy as np import statsmodels.api as sm y = [1,2,3,4,3,4,5,4,5,5,4,5,4,5,4,5,6,5,4,5,4,3,4] x = [ [4,2,3,4,5,4,5,6,7,4,8,9,8,8,6,6,5,5,5,5,5,5,5], [4,1,2,3,4,5,6,7,5,8,7,8,7,8,7,8,7,...
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Saving and Reading Bitmaps/Images from Internal memory in Android

... when I want to share the saved image, it returns "Directory not created" and the image is crashed. can you help me? – A. N Oct 9 '17 at 8:02 ...