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Truncate Two decimal places without rounding

Lets say I have a value of 3.4679 and want 3.46, how can I truncate to two decimal places that without rounding up? 21 Answ...
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How to tell if a string is not defined in a Bash shell script

...Autoconf, you'll find that they do not recommend combining terms with '-a' and do recommend using separate simple tests combined with &&. I've not encountered a system where there is a problem; that doesn't mean they didn't used to exist (but they are probably extremely rare these days, eve...
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What does %~dp0 mean, and how does it work?

I find %~dp0 very useful, and I use it a lot to make my batch files more portable. 7 Answers ...
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How does the const constructor actually work?

...calized" instance. That is, all constant expressions begin canonicalized, and later these "canonicalized" symbols are used to recognize equivalence of these constants. Canonicalization: A process for converting data that has more than one possible representation into a "standard" canonical repres...
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HTML anchor link - href and onclick both?

I want to author an anchor tag that executes some JavaScript and then proceeds to go wherever the href was taking it. Invoking a function that executes my JavaScript and then sets window.location or top.location to the href location doesn't work for me. ...
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Different bash prompt for different vi editing mode?

...have a prompt that depends on the mode you are currently in (insert or command). How does one find out this editing mode? 8...
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Short circuit Array.forEach like calling break

... new forEach method in JavaScript? I've tried return; , return false; and break . break crashes and return does nothing but continue iteration. ...
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Python executable not finding libpython shared library

I am installing Python 2.7 on CentOS 5. I built and installed Python as follows 9 Answers ...
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How to create a directory if it doesn't exist using Node.js?

...rectory if it doesn't exist. It should have full permission for the script and readable by others. 17 Answers ...
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Python SQL query string formatting

...bugging my application I'd like to log to file all the sql query strings, and it is important that the string is properly formated. ...