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Random record from MongoDB
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Starting with the 3.2 release of MongoDB, you can get N random docs from a collection using the $sample aggregation pipeline operator:
// Get one random document from the mycoll collection.
db.mycoll.aggregate([{ $sample: { size: 1 } }])
If...
How to encode URL parameters?
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173
With PHP
echo urlencode("http://www.image.com/?username=unknown&password=unknown");
Resul...
How to return smart pointers (shared_ptr), by reference or by value?
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edited Jun 30 '17 at 16:06
Ray Hulha
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“Insufficient Storage Available” even there is lot of free space in device memory
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edited Dec 13 '14 at 16:13
Peter Mortensen
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SQL query to select dates between two dates
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Filip
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answered Feb 26 '11 at 4:37
DeepakDeepak
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Unable to hide welcome screen in Emacs
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answered Apr 13 '09 at 17:28
Bastien LéonardBastien Léonard
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SQL Server ':setvar' Error
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Josh Darnell
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answered Apr 21 '10 at 17:12
AndrewAndrew
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What's the difference between hard and soft floating point numbers?
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answered Jul 23 '10 at 19:21
nmichaelsnmichaels
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What is the difference between “Rollback…” and “Back Out Submitted Changelist #####” in Perforce P4V
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223
Both of these operations restore a set of files to a previous state and are essentially faster, ...
C# nullable string error
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304
System.String is a reference type and already "nullable".
Nullable<T> and the ? suffix ...