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Is there any difference between a GUID and a UUID?
...-20 Update: While GUIDs (as used by Microsoft) and UUIDs (as defined by RFC4122) look similar and serve similar purposes, there are subtle-but-occasionally-important differences. Specifically, some Microsoft GUID docs allow GUIDs to contain any hex digit in any position, while RFC4122 requires cert...
PHP - how to best determine if the current invocation is from CLI or web server?
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edited Mar 12 '12 at 5:34
community wiki
3 re...
In MySQL, can I copy one row to insert into the same table?
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Grim...Grim...
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The way to check a HDFS directory's size?
...ted in 2.6.0:
hadoop fs -dus [directory]
Since 0.20.203 (dead link) 1.0.4 and still compatible through 2.6.0:
hdfs dfs -du [-s] [-h] URI [URI …]
You can also run hadoop fs -help for more info and specifics.
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Django DB Settings 'Improperly Configured' Error
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You can't just fire up Python and check things, Django doesn't know what project you want to wor...
Best way to concatenate List of String objects? [duplicate]
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Your approach is dependent on Java's ArrayList#toString() implementation.
While the implementa...
How to find controls in a repeater header or footer
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edited Feb 6 '14 at 23:18
community wiki
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Count number of occurences for each unique value
...ommon entries are.
– Torvon
Dec 1 '14 at 16:25
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@Torvon - sure, just use order() on the results....
What's the state of the art in email validation for Rails?
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answered Aug 24 '10 at 9:56
HallelujahHallelujah
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What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
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Maybe an example demonstrating how both methods are used will help you to understand things bet...