大约有 9,000 项符合查询结果（耗时：0.0275秒） [XML]
Short form for Java if statement
...ty == null? I'd therefore say your middle solution is definitely the best (PS and I approve of the 'unnecessary' parentheses! People need to remember that 99% of coding is communicating with other people (and your future self), not the compiler - otherwise we'd use c!)
– Alex
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Postgresql - unable to drop database because of some auto connections to DB
...N DATABASE thedb FROM public;
(and possibly other users/roles; see \l+ in psql)
You can then terminate all connections to this db except your own:
SELECT pid, pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = current_database() AND pid <> pg_backend_pid();
On older versions p...
Convert boolean to int in Java
...
int myInt = myBoolean ? 1 : 0;
^^
PS : true = 1 and false = 0
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What IDE to use for Python? [closed]
...|Y |CF|Y |Y*|Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |*JavaScript
PyDev (Eclipse) |Y |F |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y |Y | | | |
PyScripter |W |F |Y | |Y |Y | |Y |Y |Y | |Y |Y |Y | | | |
PythonWin |W |F |Y | |Y | | |Y |Y | | |Y | | | | | |
SciTE |Y |F...
How do you find the current user in a Windows environment?
...ets the user's domain.
PowerShell
In the PowerShell command prompt or a .ps1 or .psm1 script, you can use the following:
[System.Security.Principal.WindowsIdentity]::GetCurrent().Name - Gives you the fully qualified username (e.g. Domain\Username). This is also the most secure method because it c...
How can I kill a process by name instead of PID?
...illing, independent of their name.
But if you don't see the process with ps aux, you probably won't have the right to kill it ...
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Kill detached screen session [closed]
...t quit and :quit lead to command not found on my remote Linux server (perhaps differences between versions of the OS or screen are to blame)
– Hack-R
Mar 20 '15 at 15:05
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How to extract the substring between two markers?
...ind('ZZZ', start)
>>> s[start:end]
'1234'
Then you can use regexps with the re module as well, if you want, but that's not necessary in your case.
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How to assign the output of a Bash command to a variable? [duplicate]
...cess count) into the variable.
It looks something like this:
NUM_PROCS=$(ps -e | sed 1d | wc -l)
I hope that helps add some handy information to this discussion.
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Highlight bash/shell code in markdown
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I find good description at https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet#code
Code blocks are part of the Markdown spec, but syntax highlighting isn't.
However, many renderers -- like Github's and Markdown Here -- support syntax highli...