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In log4j, does checking isDebugEnabled before logging improve performance?
...ava 8, you don't have to use isDebugEnabled() to improve the performance.
https://logging.apache.org/log4j/2.0/manual/api.html#Java_8_lambda_support_for_lazy_logging
import java.util.logging.Logger;
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Logger.getLogger("hello").info(() -> "Hello " + name);
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How to check whether a pandas DataFrame is empty?
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How to get the seconds since epoch from the time + date output of gmtime()?
...re two ways, depending on your original timestamp:
mktime() and timegm()
http://docs.python.org/library/time.html
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C# nullable string error
... except for string.
The following page gives a list of the C# primitives:
http://msdn.microsoft.com/en-us/library/aa711900(v=vs.71).aspx
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Object.getOwnPropertyNames vs Object.keys
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Reopen last closed tab in Visual Studio
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in VS 2010 "PowerCommands for Visual Studio 2010"
http://visualstudiogallery.msdn.microsoft.com/e5f41ad9-4edc-4912-bca3-91147db95b99/
Adds a command "Undo Close"
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Using OR in SQLAlchemy
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Use of 'use utf8;' gives me 'Wide character in print'
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Where does 'Hello world' come from?
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From http://en.wikipedia.org/wiki/Hello_world_program:
The first known instance of the usage
of the words "hello" and "world"
together in computer literature
occurred earlier, in Kernighan's 1972
Tutorial Introduction ...
Filtering collections in C#
...you and return a subset of the list.
MSDN has a great code example here: http://msdn.microsoft.com/en-us/library/aa701359(VS.80).aspx
EDIT: I wrote this before I had a good understanding of LINQ and the Where() method. If I were to write this today i would probably use the method Jorge mentions a...