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Round to at most 2 decimal places (only if necessary)

I'd like to round at most 2 decimal places, but only if necessary . 79 Answers 79 ...
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How do I rename all files to lowercase?

I have for example TREE.wav, ONE.WAV. I want to rename it to tree.wav, one.wav. How do I rename all files to lowercase? 4 ...
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Python mysqldb: Library not loaded: libmysqlclient.18.dylib

I just compiled and installed mysqldb for python 2.7 on my mac os 10.6. I created a simple test file that imports 15 Answe...
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Linear Layout and weight in Android

I always read about this funny weight value in the Android documentations. Now I want to try it for the first time but it isn't working at all. ...
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Is calculating an MD5 hash less CPU intensive than SHA family functions?

Is calculating an MD5 hash less CPU intensive than SHA-1 or SHA-2 on "standard" laptop x86 hardware? I'm interested in general information, not specific to a certain chip. ...
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How to trace the path in a Breadth-First Search?

How do you trace the path of a Breadth-First Search, such that in the following example: 5 Answers ...
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How do I negate a test with regular expressions in a bash script?

Using GNU bash (version 4.0.35(1)-release (x86_64-suse-linux-gnu), I would like to negate a test with Regular Expressions. For example, I would like to conditionally add a path to the PATH variable, if the path is not already there, as in: ...
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How do I declare and initialize an array in Java?

How do I declare and initialize an array in Java? 28 Answers 28 ...
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ElasticSearch - Return Unique Values

How would I get the values of all the languages from the records and make them unique. 5 Answers ...
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How do I validate a date string format in python?

I have a python method which accepts a date input as a string . 5 Answers 5 ...