大约有 15,461 项符合查询结果（耗时：0.0226秒） [XML]
How do I compare two string variables in an 'if' statement in Bash? [duplicate]
...ngimed, [ is a command (actually, an alternate name for the command called test); if you run which [, you'll see there's actually an executable file for it on disk (even though the shell may provide a built-in implementation as a performance optimization). Just like you have to put a space between t...
Allowed characters in Linux environment variable names
...
My quick testing showed that they basically follow the same rules as C variable names do have, namely
a-z, A-Z, _ and 0-9
May NOT begin with a number
So this excludes . inside them. Any illegal variable name is credited with unkno...
How to identify all stored procedures referring a particular table
I created a table on development environment for testing purpose and there are few sp's which are refreing this table. Now I have have to drop this table as well as identify all sp's which are referring this table. I am facing difficulty to find list of all sp's. Please suggest some query by assumin...
NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder
...s to a Samsung and the app I was working on is no longer active so I can't test it out.
– Matt K
Dec 1 '14 at 15:49
3
...
How does PHP 'foreach' actually work?
...lways unset the next element, rather than the current one.
Examples: Your test cases
The three aspects described above should provide you with a mostly complete impression of the idiosyncrasies of the foreach implementation and we can move on to discuss some examples.
The behavior of your test c...
Using print statements only to debug
...g statements like:
debug('My value: %d' % value)
...then I pick up unit testing and never did this again! :)
share
|
improve this answer
|
follow
|
...
Check number of arguments passed to a Bash script
...
Just like any other simple command, [ ... ] or test requires spaces between its arguments.
if [ "$#" -ne 1 ]; then
echo "Illegal number of parameters"
fi
Or
if test "$#" -ne 1; then
echo "Illegal number of parameters"
fi
Suggestions
When in Bash, prefer using [[...
How to validate an e-mail address in swift?
...
wouldn't return emailTest.evaluateWithObject(testStr) be a lot more simpler and readable? Comparing to == true is a bit like Javascript.
– Sulthan
Aug 24 '14 at 11:55
...
How to execute a Ruby script in Terminal?
...call ruby your_program.rb, I get this: ruby: No such file or directory -- testapp.rb (LoadError)
– Tom Maxwell
Jan 4 '12 at 2:53
1
...
How can I replace a regex substring match in Javascript?
...
var str = 'asd-0.testing';
var regex = /(asd-)\d(\.\w+)/;
str = str.replace(regex, "$11$2");
console.log(str);
Or if you're sure there won't be any other digits in the string:
var str = 'asd-0.testing';
var regex = /\d/;
str = str.replac...