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How do you use variables in a simple PostgreSQL script?
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This doesn't answer the question at all. In MS SQL you can define a var in a query and use it right there, in the same tool. I don't get why people keep proposing this as an answer, in every version of this question.
– stone
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Generating a random password in php
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Security warning: rand() is not a cryptographically secure pseudorandom number generator. Look elsewhere for generating a cryptographically secure pseudorandom string in PHP.
Try this (use strlen instead of count, because count on a string is always 1):
function random...
Remove the legend on a matplotlib figure
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answered Nov 10 '14 at 14:21
naitsirhcnaitsirhc
3,15611 gold badge1919 silver badges1515 bronze badges
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How to create an infinite loop in Windows batch file?
...e reason.
– John Hunt
Jun 17 '15 at 10:27
1
@theonlygusti Doesn't work as a one-line command, as ...
Recent file history in Vim?
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edited Apr 23 '17 at 10:46
icc97
7,85166 gold badges5151 silver badges6969 bronze badges
answered J...
After submitting a POST form open a new window showing the result
...ions the OP wanted.
– Nicole
Mar 6 '10 at 1:34
Doesn't work for me on IE - it creates a new window with the specified ...
fstream默认不支持中文路径和输出整数带逗号的解决办法 - C/C++ - 清泛网 -...
... i << "/n"; //输出带逗号
outfile.close();
setlocale( LC_ALL, "C" ); //恢复全局locale，如果不恢复，可能导致cout无法输出中文
}
创建文件成功，在程序的“测试”文件下出现个test.txt文件。需要注意的是最后需要调用setlocale( ...
Linux MySql编译安装 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...d mysql
useradd -g mysql mysql
#开始编译安装
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_UNIX_ADDR=/tmp/mysql.sock \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_EXTRA_CHARSETS=all \
-DWITH_MYISAM_STORAGE_ENGINE=1 \
-DWITH_INNOBASE_STORAGE_ENGIN...
How do you calculate program run time in python? [duplicate]
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kotai:~ chmullig$ cat sleep.py
import time
print "presleep"
time.sleep(10)
print "post sleep"
kotai:~ chmullig$ python sleep.py
presleep
post sleep
kotai:~ chmullig$ time python sleep.py
presleep
post sleep
real 0m10.035s
user 0m0.017s
sys 0m0.016s
kotai:~ chmullig$
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Remove duplicate entries using a Bash script [duplicate]
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10
Perl one-liner similar to @kev's awk solution:
perl -ne 'print if ! $a{$_}++' input
This var...