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Test whether string is a valid integer
...ore decimal digits.
References:
http://www.tldp.org/LDP/abs/html/bashver3.html#REGEXMATCHREF
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return query based on date
...e:
db.gpsdatas.find({"createdAt" : { $gte : new ISODate("2012-01-12T20:15:31Z") }});
I'm using $gte (greater than or equals), because this is often used for date-only queries, where the time component is 00:00:00.
If you really want to find a date that equals another date, the syntax would be
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How do I update zsh to the latest version?
...rminal.app on my OS X machine successfully. The version number of zsh is 4.3.11.
6 Answers
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How to find out what group a given user has?
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groups
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groups user
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How do I run git log to see changes only for a specific branch?
... Wayne ConradWayne Conrad
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Add … if string is too long PHP [duplicate]
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329
The PHP way of doing this is simple:
$out = strlen($in) > 50 ? substr($in,0,50)."..." : $i...
How to display unique records from a has_many through relationship?
...ay to display unique records from a has_many, through relationship in Rails3.
4 Answers
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How to write a JSON file in C#?
... times less memory than JavaScriptSerializer
Update since .Net Core 3.0
A new kid on the block since writing this is System.Text.Json which has been added to .Net Core 3.0. Microsoft makes several claims to how this is, now, better than Newtonsoft. Including that it is faster than Newtonsoft...
Determine font color based on background color
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edited Jul 24 '18 at 13:07
answered Dec 6 '09 at 17:09
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C++ Double Address Operator? (&&)
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edited May 23 '17 at 11:47
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