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How dangerous is it to compare floating point values?

... First of all, floating point values are not "random" in their behavior. Exact comparison can and does make sense in plenty of real-world usages. But if you're going to use floating point you need to be aware of how it works. Erring on the side of assuming floating point ...
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Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?

...ould almost never be used. (Making int 64-bit would waste cache footprint and memory bandwidth; x86-64 most efficiently supports 32 and 64-bit operand sizes) The behaviour for 8 and 16-bit operand sizes is the strange one. The dependency madness is one of the reasons that 16-bit instructions are a...
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Bootstrap Dropdown menu is not working

...n my machine. Anyone have any ideas? I have been staring at it for an hour and can't seem to figure out what the problem is. ...
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How can I create a two dimensional array in JavaScript?

I have been reading online and some places say it isn't possible, some say it is and then give an example and others refute the example, etc. ...
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[ :Unexpected operator in shell programming [duplicate]

...et of sh syntax - the /bin/sh executable on your system may provide only standard sh functionality, in which []-style tests are not included. – Tim Aug 5 '10 at 1:17 13 ...
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SQLite UPSERT / UPDATE OR INSERT

...r in a single statement. Plus you get all the other features, improvements and bug fixes that usually come with a more recent release. share | improve this answer | follow ...
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Spring RestTemplate timeout

...sing Spring's RestTemplate to talk to my service. I've done some research and I've found and used the xml below (in my application xml) which I believe is meant to set the timeout. I'm using Spring 3.0. ...
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Can PHP cURL retrieve response headers AND body in a single request?

Is there any way to get both headers and body for a cURL request using PHP? I found that this option: 13 Answers ...
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What's the difference of “./configure” option “--build”, “--host” and “--target”?

The script ./configure accepts 3 options --build , --host and --target . I'm confusing their roles. What's the difference and semantics of them? ...
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Undo git reset --hard with uncommitted files in the staging area

...tupidly did git reset --hard , but before that I've done only get add . and didn't do git commit . Please help! Here is my log: ...