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Is there a performance difference between a for loop and a for-each loop?

What, if any, is the performance difference between the following two loops? 16 Answers ...
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rails - Devise - Handling - devise_error_messages

in my user edit page, there is a line as follows: 21 Answers 21 ...
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Why do I need to explicitly push a new branch?

I am new in git and I am practicing. I created a local branch but I saw that when I did git push my branch was not uploaded to the repository. I had to actually do: git push -u origin --all . Why is this? Isn't a branch a new change to be pushed by default? Why do I need to run the second com...
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Unresolved Import Issues with PyDev and Eclipse

I am very new to PyDev and Python, though I have used Eclipse for Java plenty. I am trying to work through some of the Dive Into Python examples and this feels like an extremely trivial problem that's just becoming exceedingly annoying. I am using Ubuntu Linux 10.04. ...
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How can I create a Makefile for C projects with SRC, OBJ, and BIN subdirectories?

A few months ago, I came up with the following generic Makefile for school assignments: 3 Answers ...
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Android SDK on a 64-bit linux machine

Is it possible to develop using the Android SDK on a 64-bit linux machine. The available SDK downloads seem to be just for 32-bit versions of Linux. ...
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Jenkins Git Plugin: How to build specific tag?

I am having issues getting Jenkins to build a specified tag. The tag is part of a parametrized build, but I do not know how to pass this through to the git plugin to just build that tag. This has been taking 3 hours of my day and I have conceded defeat to the masters at stack overflow. ...
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Eclipse Workspaces: What for and why?

I have seen, read and thought of different ways of using workspaces (per project, per application (multi-asseted or not), per program language, per target (web-development, plugins,..), and so on) and I am still doubting what the best approach is. ...
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Visual Studio popup: “the operation could not be completed”

When I try to open a project, local or on a Team Foundation Server (TFS), I get a modal window telling me that: 30 Answer...
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Android: How can I validate EditText input?

I need to do form input validation on a series of EditTexts. I'm using OnFocusChangeListeners to trigger the validation after the user types into each one, but this doesn't behave as desired for the last EditText. ...