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C++ Exceptions questions on rethrow of original exception
...ould be an object on the stack about to be unwinded, like e was at 0xbfbce430, not in the "magical location" at 0x98e7058), so you will lose derived-class-specific data during the copy-construction of a base class instance.
Simple program to illustrate what's happening:
#include <stdio.h>
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Rails: how do I validate that something is a boolean?
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Since Rails 3, you can do:
validates :field, inclusion: { in: [ true, false ] }
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What's the difference of strings within single or double quotes in groovy?
...r is worth reading (esp. the part about GStrings not being Strings about 2/3 of the way down.
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Is it possible to override the configuration of a plugin already defined for a profile in a parent P
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get list of pandas dataframe columns based on data type
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320
If you want a list of columns of a certain type, you can use groupby:
>>> df = pd.Da...
How do I get the function name inside a function in PHP?
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395
The accurate way is to use the __FUNCTION__ predefined magic constant.
Example:
class Test {...
Efficiently test if a port is open on Linux?
...n, stdout, and stderr. 5 is sometimes used by Bash for child processes, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127.0.0.1/445 || echo "No one is listening!"
exec 6>&- # close output connection
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Recreating a Dictionary from an IEnumerable
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If you're using .NET 3.5 or .NET 4, it's easy to create the dictionary using LINQ:
Dictionary...