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How to write a bash script that takes optional input arguments?
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743
You could use the default-value syntax:
somecommand ${1:-foo}
The above will, as described in...
Iterating over dictionaries using 'for' loops
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13 Answers
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How to define a two-dimensional array?
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1039
You're technically trying to index an uninitialized array. You have to first initialize the out...
What is database pooling?
... | |
| Clients |
+---------+ |
| |-+ (1) +------+ (3) +----------+
| Clients | ===#===> | Open | =======> | RealOpen |
| | | +------+ +----------+
+---------+ | ^
| | (2)
| /------\
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How do I check to see if a value is an integer in MySQL?
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answered Sep 16 '08 at 19:13
JumpyJumpy
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Git: Set up a fetch-only remote?
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edited Apr 22 '15 at 20:31
gunr2171
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answered...
What's the $unwind operator in MongoDB?
...ad" }
],
other : { foo : 5 }
}
Notice how tags is actually an array of 3 items, in this case being "fun", "good" and "fun".
What $unwind does is allow you to peel off a document for each element and returns that resulting document.
To think of this in a classical approach, it would be the equiv...
Associative arrays in Shell scripts
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edited May 23 '17 at 10:31
Community♦
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answered Mar 27 '09 at 16:48
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How do I iterate over a range of numbers defined by variables in Bash?
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1838
for i in $(seq 1 $END); do echo $i; done
edit: I prefer seq over the other methods because I c...
Should I implement __ne__ in terms of __eq__ in Python?
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Daniel DiPaoloDaniel DiPaolo
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