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How can I check whether an array is null / empty?
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There's a key difference between a null array and an empty array. This is a test for null.
in...
How to optimize for-comprehensions and loops in Scala?
...t positive number that is evenly divisible by all of the numbers from 1 to 20?"
8 Answers
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Is there a MySQL option/feature to track history of changes to records?
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edited Apr 10 '18 at 11:24
Octavian Catusanu
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Characters allowed in a URL
...1*( unreserved / sub-delims / ":" )
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h1...
How to display nodejs raw Buffer data as Hex string
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2 Answers
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How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
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answered Feb 27 '09 at 20:45
Mehrdad AfshariMehrdad Afshari
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Efficient way to remove keys with empty strings from a dict
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Python 2.X
dict((k, v) for k, v in metadata.iteritems() if v)
Python 2.7 - 3.X
{k: v for k, v in metadata.items() if v is not None}
Note that all of your keys have values. It's just that some of those values are the empty s...
What is a Python equivalent of PHP's var_dump()? [duplicate]
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287
To display a value nicely, you can use the pprint module. The easiest way to dump all variable...
Print PHP Call Stack
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If you want to generate a backtrace, you are looking for debug_backtrace and/or debug_print_bac...