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Disable cache for some images

...ser no caching can be performed. The random number generation can happen either on the server when serving the page (just make sure the page itself isn't cached...), or on the client (using JavaScript). You will need to verify whether your web-server can cope with this trick. ...
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How do I parse a string with a decimal point to a double?

... if converting 12345678.12345678, it converts too 12345678.123457 – PUG Dec 2 '11 at 16:18 5 ...
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What can you use Python generator functions for?

... Generators give you lazy evaluation. You use them by iterating over them, either explicitly with 'for' or implicitly by passing it to any function or construct that iterates. You can think of generators as returning multiple items, as if they return a list, but instead of retur...
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Why are elementwise additions much faster in separate loops than in a combined loop?

...ame cache way. However, Intel processors have had 8-way L1 cache associativity for a while. But in reality, the performance isn't completely uniform. Accessing 4-ways is still slower than say 2-ways. EDIT: It does in fact look like you are allocating all the arrays separately. Usually when such larg...
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What is the difference between . (dot) and $ (dollar sign)?

... The $ operator is for avoiding parentheses. Anything appearing after it will take precedence over anything that comes before. For example, let's say you've got a line that reads: putStrLn (show (1 + 1)) If you want to get rid of those parentheses, any of the following lines would also do t...
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What causes “Unable to access jarfile” error?

I want to execute my program without using an IDE. I've created a jar file and an exectuable jar file. When I double click the exe jar file, nothing happens, and when I try to use the command in cmd it gives me this: ...
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How to document Ruby code?

...e RDoc processor, which can find your documentation and generate HTML from it. You've put your comment in the right place for that, but you should have a look at the RDoc documentation to learn about the kinds of tags that RDoc knows how to format. To that end, I'd reformat your comment as follows: ...
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What is the best practice for dealing with passwords in git repositories?

I've got a little Bash script that I use to access twitter and pop up a Growl notification in certain situations. What's the best way to handle storing my password with the script? ...
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Converting many 'if else' statements to a cleaner approach [duplicate]

My code here detects if the mimeType is equals to some MIME type, if it is, it will do a certain conversion 7 Answers ...
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How can I get the diff between all the commits that occurred between two dates with Git?

Or just all the commits that occurred between two dates? In SVN, you could do something like 11 Answers ...