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How to check if a table exists in a given schema
...ion):
Only those tables and views are shown that the current user has access
to (by way of being the owner or having some privilege).
The query provided by @kong can return FALSE, but the table can still exist. It answers the question:
How to check whether a table (or view) exists, and the ...
Unix's 'ls' sort by name
...output to a terminal, work when piping). You can "fix" this with piping to cat, use the C.UTF-8 locale (if your system supports it) and/or use the -b flag. Even better, do not use ls at all, better use `
– 12431234123412341234123
Sep 5 '17 at 16:36
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How to revert a “git rm -r .”?
...rom here: http://www.spinics.net/lists/git/msg62499.html
git prune -n
git cat-file -p <blob #>
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What is the ultimate postal code and zip regex?
...5}"
"UZ", "\d{6}"
"VA", "00120"
"VE", "\d{4}"
"ZM", "\d{5}"
"AS", "96799"
"CC", "6799"
"CK", "\d{4}"
"RS", "\d{6}"
"ME", "8\d{4}"
"CS", "\d{5}"
"YU", "\d{5}"
"CX", "6798"
"ET", "\d{4}"
"FK", "FIQQ 1ZZ"
"NF", "2899"
"FM", "(9694[1-4])([ \-]\d{4})?"
"GF", "9[78]3\d{2}"
"GN", "\d{3}"
"GP", "9[78][01]\d...
How to update the value stored in Dictionary in C#?
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dont call a dictionary list, call it dogs or cats or dict
– user3800527
Mar 17 '16 at 9:35
1
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GitHub: Permission denied (publickey). fatal: The remote end hung up unexpectedly
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cat ~/.ssh/id_rsa.pub might be an option? :p
– torr
Dec 27 '13 at 18:43
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Searching subversion history (full text)
.../bash
for REV in `svn log $1 | grep ^r[0-9] | awk '{print $1}'`; do
svn cat $1 -r $REV | grep -q $2
if [ $? -eq 0 ]; then
echo "$REV"
fi
done
If you really want to search everything, use the svnadmin dump command and grep through that.
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How can I add numbers in a Bash script?
...um=$((num1 + 2 + 3)) # ...
num=$[num1+num2] # Old, deprecated arithmetic expression syntax
Using the external expr utility. Note that this is only needed for really old systems.
num=`expr $num1 + $num2` # Whitespace for expr is important
For floating point:
Bash doesn'...
Getting a list of associative array keys
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You can use: Object.keys(obj)
Example:
var dictionary = {
"cats": [1, 2, 37, 38, 40, 32, 33, 35, 39, 36],
"dogs": [4, 5, 6, 3, 2]
};
// Get the keys
var keys = Object.keys(dictionary);
console.log(keys);
See reference below for browser support. It is supported in Firefox 4....
(Deep) copying an array using jQuery [duplicate]
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similar: var a = [1,2,3]; var b = ([]).concat(a); b is a copy
– Yauhen Yakimovich
May 7 '12 at 15:38
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