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Remove duplicate lines without sorting [duplicate]
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The UNIX Bash Scripting blog suggests:
awk '!x[$0]++'
This command is telling awk which lines to print. The variable $0 holds the entire contents of a line and square brackets are array access. So, for each line of the file, the node of the array x is incremented and the...
What to add for the update portion in ConcurrentDictionary AddOrUpdate
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220
You need to pass a Func which returns the value to be stored in the dictionary in case of an upd...
Select multiple columns in data.table by their numeric indices
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edited Oct 29 '19 at 9:09
Henrik
52.1k1111 gold badges117117 silver badges134134 bronze badges
answer...
What is the difference between setUp() and setUpClass() in Python unittest?
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edited Feb 27 '19 at 22:06
answered May 15 '14 at 6:32
Be...
Why use 'git rm' to remove a file instead of 'rm'?
... git so I don't know the exact command. If you have come here in or after 2014, I hope this answer was useful to you.
– Eric Hepperle - CodeSlayer2010
Nov 24 '14 at 19:14
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Get JavaScript object from array of objects by value of property [duplicate]
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answered Dec 20 '12 at 2:01
elclanrselclanrs
81.1k1919 gold badges120120 silver badges152152 bronze badges
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What is the difference between JavaConverters and JavaConversions in Scala?
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EDIT: Java Conversions got @deprecated in Scala 2.13.0. Use scala.jdk.CollectionConverters instead.
JavaConversions provide a series of implicit methods that convert between a Java collection and the closest corresponding Scala collection, and vice versa. This is done by creat...
What is the purpose of the -nodes argument in openssl?
... password?
– Flimm
Apr 12 '13 at 8:50
4
@Flimm: Protected with a password, yes. The password gen...
Check if a class has a member function of a given signature
...gt; static int Test(...);
static const bool Has = sizeof(Test<T>(0)) == sizeof(char);
};
template<typename TMap>
void ReportMemUsage(const TMap& m, std::true_type)
{
// We may call used_memory() on m here.
}
template<typename TMap>
void ReportMemUsage(const TMap&am...
How can I download a specific Maven artifact in one command line?
.../.m2/plugin-registry.xml with the following contents:
<?xml version="1.0" encoding="UTF-8"?>
<pluginRegistry xsi:schemaLocation="http://maven.apache.org/PLUGIN_REGISTRY/1.0.0 http://maven.apache.org/xsd/plugin-registry-1.0.0.xsd"
xmlns="http://maven.apache.org/PLUGIN_REGISTRY/1.0.0"
xmlns:...