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ConcurrentHashMap vs Synchronized HashMap
...rticle Java 7: HashMap vs ConcurrentHashMap is a very good read. Highly recommended.
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How to count duplicate value in an array in javascript
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if (cnt > 0) {
document.write(current + ' comes --> ' + cnt + ' times<br>');
}
current = array_elements[i];
cnt = 1;
} else {
cnt++;
}
}
if (cnt > 0) {
document.write...
rejected master -> master (non-fast-forward)
... Auto-merging README.md Automatic merge failed; fix conflicts and then commit the result.
– Asantoya17
Jul 27 '12 at 22:30
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PostgreSQL error 'Could not connect to server: No such file or directory'
...ocal/var/postgres/
remove this and start server.
Check - https://github.com/mperham/lunchy is a great wrapper for launchctl.
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How do you tell the Visual Studio project type from an existing Visual Studio project
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Here is a list you can use to compare the Guid's to get project types: codeproject.com/Reference/720512/…
– Nathan F.
Jul 26 '18 at 16:31
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How do I sort a list of dictionaries by a value of the dictionary?
...mgetter
newlist = sorted(list_to_be_sorted, key=itemgetter('name'))
For completeness (as pointed out in comments by fitzgeraldsteele), add reverse=True to sort descending
newlist = sorted(l, key=itemgetter('name'), reverse=True)
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Split string into array of character strings
... called a negative lookahead. Checkout the documentation here: docs.oracle.com/javase/6/docs/api/java/util/regex/…
– Erwin
May 28 '14 at 8:51
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Does C# have extension properties?
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For the moment it is still not supported out of the box by Roslyn compiler ...
Until now, the extension properties were not seen as valuable enough to be included in the previous versions of C# standard. C# 7 and C# 8.0 have seen this as proposal champion but it wasn't released yet, most o...
How to list all the available keyspaces in Cassandra?
...milies which contains information about all tables.
The DESCRIBE and SHOW commands only work in cqlsh and cassandra-cli.
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Installing PG gem on OS X - failure to build native extension
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