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In Ruby, is there an Array method that combines 'select' and 'map'?
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I usually use map and compact together along with my selection criteria as a postfix if. compact gets rid of the nils.
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}
=> [3, 3, 3, nil, nil, nil]
jruby-1.5.0 > [1,1,1,2,3,4].m...
Is it possible to move/rename files in Git and maintain their history?
...h the commit, so whether you use git mv or mv doesn't matter.
The log command takes a --follow argument that continues history before a rename operation, i.e., it searches for similar content using the heuristics:
http://git-scm.com/docs/git-log
To lookup the full history, use the following comma...
What goes into the “Controller” in “MVC”?
I think I understand the basic concepts of MVC - the Model contains the data and behaviour of the application, the View is responsible for displaying it to the user and the Controller deals with user input. What I'm uncertain about is exactly what goes in the Controller.
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Get unique values from a list in python [duplicate]
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mylist = ['nowplaying', 'PBS', 'PBS', 'nowplaying', 'job', 'debate', 'thenandnow']
myset = set(mylist)
print(myset)
If you use it further as a list, you should convert it back to a list by doing:
mynewlist = list(myset)
Another possibility, probably faster would be to use a set from the beginn...
Interface vs Base class
When should I use an interface and when should I use a base class?
38 Answers
38
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What is SOA “in plain english”? [closed]
...sh what is SOA all about ? I hear SOA here, SOA there but I cannot understand exacly what it is and what is used for. Was it some simple concept and later evolved into something huge or what?
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How to deploy correctly when using Composer's develop / production switch?
...be installed in production (on the live server). This is (in theory) very handy for scripts that only make sense in development, like tests, fake-data-tools, debugger, etc.
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Get list of passed arguments in Windows batch script (.bat)
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dancavallaro has it right, %* for all command line parameters (excluding the script name itself). You might also find these useful:
%0 - the command used to call the batch file (could be foo, ..\foo, c:\bats\foo.bat, etc.)
%1 is the first command line parameter,
%2 ...
What is a pre-revprop-change hook in SVN, and how do I create it?
I wanted to edit a log comment in the repository browser and received an error message that no pre-revprop-change hook exists for the repository. Besides having a scary name, what is a pre-revprop-change hook, and how do I create it?
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What is the main difference between Inheritance and Polymorphism?
... was presented with this question in an end of module open book exam today and found myself lost. I was reading Head first Java and both definitions seemed to be exactly the same. I was just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar questi...