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mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
I tried mongo replica sets for the first time.
7 Answers
7
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Is there a way to make git pull automatically update submodules?
Is there a way to automatically have git submodule update (or preferably git submodule update --init called whenever git pull is done?
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Regex for password must contain at least eight characters, at least one number and both lower and up
... edited Sep 14 '18 at 10:41
Wiktor Stribiżew
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answered Jan 30 '14 at 12:44
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Volatile vs. Interlocked vs. lock
...field that is accessed by multiple threads. This int is only incremented or decremented.
9 Answers
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PHP - Get bool to echo false when false
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echo $bool_val ? 'true' : 'false';
Or if you only want output when it's false:
echo !$bool_val ? 'false' : '';
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Modulo operator with negative values [duplicate]
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From ISO14882:2011(e) 5.6-4:
The binary / operator yields the quotient, and the binary % operator
yields the remainder from the division of the first expression by the
second. If the second operand of / or % is zero the behavior is
undefined. For integral operands th...
Get current domain
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Try using this: $_SERVER['SERVER_NAME']
Or parse
$_SERVER['REQUEST_URI']
apache_request_headers()
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Remove an element from a Bash array
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The following works as you would like in bash and zsh:
$ array=(pluto pippo)
$ delete=pluto
$ echo ${array[@]/$delete}
pippo
$ array=( "${array[@]/$delete}" ) #Quotes when working with strings
If need to delete more than one element:
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Confused by python file mode “w+”
...t you write after this point
f.write('somedata\n')
f.seek(0) # Important: return to the top of the file before reading, otherwise you'll just read an empty string
data = f.read() # Returns 'somedata\n'
Note the f.seek(0) -- if you forget this, the f.read() call will try to read from t...
What's a concise way to check that environment variables are set in a Unix shell script?
...cripts where I need to check that certain environment variables are set before I start doing stuff, so I do this sort of thing:
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