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How to sum array of numbers in Ruby?
... using array.map(...).inject(...) is inefficient, you will iterate through all data twice. Try array.inject(0) { |sum, product| sum += product.price }
– everett1992
Apr 4 '13 at 6:11
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How to create a file in memory for user to download, but not through server?
...h the server?
I know I can't write directly to their machine (security and all), but can I create and prompt them to save it?
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CruiseControl [.Net] vs TeamCity for continuous integration?
...ince the one that spawned Cruise Control (java version). I've tried almost all of them at some point. I've never been happier than I am with TeamCity. It is very simple to set up and still provides a great deal of power. The build statistics page that shows build times, unit test count, pass rate et...
Conventions for exceptions or error codes
...ary it's probably an error, and I want the program to halt and let me know all about that.
If, however, I'm writing a piece of code which I must know the behaviour of in every possible situation, then I want error codes. Otherwise I have to know every exception that can be thrown by every line in ...
Is there a way to tell git to only include certain files instead of ignoring certain files?
My programs generally generate huge output files (~1 GB) which I do not want to be backing up to the git repository. So instead of being able to do
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How to properly add include directories with CMake
...the headers... Do I need to list the headers of just this library, or also all the headers that it might depend on (on top of declaring the dependency on the library) ? It's a growing project and I quite dread the idea of adding a header to all the dependencies when I add one in the root library.
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Why are global variables evil? [closed]
...ad in any programming language.
However, global constants are not conceptually the same as global variables; global constants are perfectly harmless. In Python the distinction between the two is purely by convention: CONSTANTS_ARE_CAPITALIZED and globals_are_not.
The reason global variables are ba...
Internet Explorer 9 not rendering table cells properly
...umns outside the boundries of my table.
I fixed this by doing something really silly; removing all the spaces betwen the <td> start and end tags and left justifying the HTML markup pertaining to my table. Basically, you want all of your <td> </td> on the same line, no spaces.
Exa...
How to initialize all members of an array to the same value in Swift?
I have a large array in Swift. I want to initialize all members to the same value (i.e. it could be zero or some other value). What would be the best approach?
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Intellij Idea 9/10, what folders to check into (or not check into) source control?
...ans to Intellij 9 Ultimate and need to know what files/folders should typically be excluded from source control as they are not "workstation portable", i.e.: they reference paths that only exist on one user's computer.
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