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Why can't I call read() twice on an open file?

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In pure functional languages, is there an algorithm to get the inverse function?

...h that inv f . f ≡ id. Say we have tested it for the function f = id, by confirming that inv f (repeat B0) -> (B0 : ls) Since this first B0 in the output must have come after some finite time, we have an upper bound n on both the depth to which inv had actually evaluated our test input to ob...
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How do I check CPU and Memory Usage in Java?

... @ComputerScientist Because free is actually what is free (post GC) it doesn't show objects waiting for GC. To get MUCH more accurate, run 2 garbage collections before this answer. If you try it with and without GC you will find the post-GC values very consistent but the preGC will ...
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What's the difference between disabled=“disabled” and readonly=“readonly” for HTML form input fields

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Understanding Apache's access log

...>s %b \"%{Referer}i\" \"%{User-agent}i\"" combined %h is the remote host (ie the client IP) %l is the identity of the user determined by identd (not usually used since not reliable) %u is the user name determined by HTTP authentication %t is the time the request was received. %r is the request...
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Rails 3 - can't install pg gem

...ur pg-config can be in different locations depending on how you installed postgres. share | improve this answer | follow | ...
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How to read a single character from the user?

...now there's a function in Windows for it, but I'd like something that is cross-platform. 23 Answers ...
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Why is printing to stdout so slow? Can it be sped up?

... logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results. ...
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When should I use std::thread::detach?

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How to Define Callbacks in Android?

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