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Drop multiple tables in one shot in mysql
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SET foreign_key_checks = 0;
DROP TABLE IF EXISTS a,b,c;
SET foreign_key_checks = 1;
Then you do not have to worry about dropping them in the correct order, nor whether they actually exist.
N.B. this is for MySQL only (as in the quest...
How to read from a file or STDIN in Bash?
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Here is the simplest way:
#!/bin/sh
cat -
Usage:
$ echo test | sh my_script.sh
test
To assign stdin to the variable, you may use: STDIN=$(cat -) or just simply STDIN=$(cat) as operator is not necessary (as per @mklement0 comment).
To parse each line from the standard input, try the follo...
In Scala how do I remove duplicates from a list?
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removeDuplicates(tail.filter(_ != head))
– jwvh
Sep 13 at 22:50
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How to print matched regex pattern using awk?
...Relevant manual page: https://www.gnu.org/software/sed/manual/sed.html#Back_002dreferences-and-Subexpressions
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Why does i = i + i give me 0?
... For anyone who didn't get the symbolism: en.wikipedia.org/wiki/Kill_screen#Pac-Man
– wei2912
Jun 14 '14 at 13:19
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Returning JSON from a PHP Script
...you're serializing **/;
header('Content-Type: application/json');
echo json_encode($data);
If I'm not using a particular framework, I usually allow some request params to modify the output behavior. It can be useful, generally for quick troubleshooting, to not send a header, or sometimes print_r t...
Can anyone explain this strange behavior with signed floats in C#?
...qual to 0.0.
Here is the source for CanCompareBits from SSCLI:
FCIMPL1(FC_BOOL_RET, ValueTypeHelper::CanCompareBits, Object* obj)
{
WRAPPER_CONTRACT;
STATIC_CONTRACT_SO_TOLERANT;
_ASSERTE(obj != NULL);
MethodTable* mt = obj->GetMethodTable();
FC_RETURN_BOOL(!mt->Contains...
Android: How can I validate EditText input?
...ern.compile("[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz123456789_]*");
Matcher matcher = pattern.matcher(checkMe);
boolean valid = matcher.matches();
if(!valid){
Log.d("", "invalid");
return "";
}
}
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Site does not exist error for a2ensite
...ited Jul 26 '19 at 7:26
Traveler_3994
3588 bronze badges
answered Dec 15 '13 at 6:54
devodevo
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Redirecting EC2 Elastic Load Balancer from HTTP to HTTPS
... RedirectConfig:
Protocol: HTTPS
StatusCode: HTTP_301
Port: 443
If you still use Classic Load Balancers, go with one of the NGINX configs described by the others.
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