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What is the difference between the | and || or operators?

...lways used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable? ...
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Eclipse doesn't highlight references anymore

...icon on the toolbar - it toggles "Mark Occurrences". You probably accidentally pressed it when trying to select a menu item at some point. I had a friend who did that with the "show selected element only" toolbar button... You can either press it again or configure as Rytmis says. ...
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Why are dates calculated from January 1st, 1970?

...1st, 1970) as default standard The Question makes two false assumptions: All time-tracking in computing is done as a count-since-1970. Such tracking is standard. Two Dozen Epochs Time in computing is not always tracked from the beginning of 1970 UTC. While that epoch reference is popular, various...
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What is the difference between window, screen, and document in Javascript?

...t model. You can access it as window window.screen or just screen is a small information object about physical screen dimensions. window.document or just document is the main object of the potentially visible (or better yet: rendered) document object model/DOM. Since window is the global object ...
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What is the best place for storing uploaded images, SQL database or disk file system? [closed]

I'm writing an application that allows users to upload images onto the server. I expect about 20 images per day all jpeg and probably not edited/resized. (This is another question, how to resize the images on the server side before storing. Maybe someone can please drop a .NET resource for that in t...
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Make .gitignore ignore everything except a few files

...han the root dir won't be found anyway. I'm using this now (with *.pl) and all *.pl files are being ignored even though there are many in the subdirectories below the .gitignore file – PandaWood Nov 6 '11 at 1:44 ...
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How do I make a text input non-editable?

... or readonly="readonly" if you like it being all XML-y, see Stephan Muller's example below :) – Algy Taylor Feb 19 '14 at 11:18 ...
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How to exit an if clause

... Ideally you can achieve both, but there are times when you must trade good code for good performance. Those times are rare, especially when you are considering using Python. In other words: don't worry so much about function c...
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Recommended Vim plugins for JavaScript coding? [closed]

...ack, I'm still a Vim noob): In vim-autocomplpop/plugin/acp.vim I've added php and javascript (and actionscript) to behavs so that it looks like that : let behavs = { \ '*' : [], \ 'ruby' : [], \ 'python' : [], \ 'perl' : [], \ 'xml' ...
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Why is textarea filled with mysterious white spaces?

... @user79685 you're welcome. Read my new comment above, I wasn't really ridiculing you. At least not in a mean way :) – Pekka Feb 4 '10 at 20:52 ...