大约有 18,000 项符合查询结果（耗时：0.0243秒） [XML]
How to execute PHP code from the command line?
...e command line:
-r <code> Run PHP <code> without using script tags <?..?>
-R <code> Run PHP <code> for every input line
You can use php's -r switch as such:
php -r 'echo function_exists("foo") ? "yes" : "no";'
The above PHP command above should outpu...
Is it possible to declare git repository as dependency in android gradle?
... Make sure you put this to the main section, not to the buildscript
– Sergei Ledvanov
Aug 7 '17 at 6:20
...
Does deleting a branch in git remove it from the history?
... that reflog for a branch would be lost.
There is also git-resurrect.sh script in contrib/ which helps find traces of a branch tip with given name and resurrect (undelete) it.
share
|
improve thi...
How can I do division with variables in a Linux shell?
...will be:
x=20; y=3;
calc $x/$y
or if you prefer, add this as a separate script and make it available in $PATH so you will always have it in your local shell:
#!/bin/bash
calc(){ awk "BEGIN { print $* }"; }
share
...
PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
I just had some very strange behavior with a simple php script I was writing. I reduced it to the minimum necessary to recreate the bug:
...
Why does running the Flask dev server run itself twice?
...n you call app.run().
See the restart_with_reloader() function code; your script is run again with subprocess.call().
If you set use_reloader to False you'll see the behaviour go away, but then you also lose the reloading functionality:
app.run(port=4004, debug=config.DEBUG, host='0.0.0.0', use_r...
PDO's query vs execute
...or MS SQL Server.
I arrived at this question because I had a long running script for an ETL that I was trying to squeeze for speed. It seemed intuitive to me that query could be faster than prepare & execute because it was calling only one function instead of two. The parameter binding operatio...
How to see which flags -march=native will activate?
...s (an Intel Core2 and AMD Phenom), so I suggest also running the following script to be sure that all of these -mno-* flags can be safely stripped.
#!/bin/bash
gcc_cmd="gcc"
# Optionally supply path to gcc as first argument
if (($#)); then
gcc_cmd="$1"
fi
with_mno=$(
"${gcc_cmd}" -march=...
How to ignore xargs commands if stdin input is empty?
... nothing) for compatiblity reasons.
I personally prefer using longopts in scripts but since the *BSD xargs does not uses longopts just use "-r" and xargs will act the same on *BSD an on linux systems
xargs on MacOS (currently MacOS Mojave) sadly don't supports the "-r" argument.
...
What does JVM flag CMSClassUnloadingEnabled actually do?
...anguages like Groovy, that define classes at runtime. Every time you run a script, one (or more) new classes are created and they stay in PermGen forever. If you're running a server, that means you have a memory leak.
If you enable CMSClassUnloadingEnabled the GC will sweep PermGen, too, and remove...