大约有 40,000 项符合查询结果（耗时：0.0435秒） [XML]
What does the number in parentheses shown after Unix command names in manpages mean?
...he command is assigned to.
These are split as
General commands
System calls
C library functions
Special files (usually devices, those found in /dev) and drivers
File formats and conventions
Games and screensavers
Miscellanea
System administration commands and daemons
Original descriptions of e...
How do I know the script file name in a Bash script?
...ink "$0" || echo "$0")")"
IMO, that'll produce confusing output. "I ran foo.sh, but it's saying I'm running bar.sh!? Must be a bug!" Besides, one of the purposes of having differently-named symlinks is to provide different functionality based on the name it's called as (think gzip and gunzip o...
AngularJS with Django - Conflicting template tags
... any way to also update the $interpolateProvider for raw output? e.g. {{{foo}}} becoming {{[{foo}]}} ?
– tester
Aug 26 '13 at 7:05
|
show ...
Determine if a function exists in bash
..., built-in function, external command, or just not defined. Example:
$ LC_ALL=C type foo
bash: type: foo: not found
$ LC_ALL=C type ls
ls is aliased to `ls --color=auto'
$ which type
$ LC_ALL=C type type
type is a shell builtin
$ LC_ALL=C type -t rvm
function
$ if [ -n "$(LC_ALL=C type -t rvm)...
How to execute PHP code from the command line?
...line
You can use php's -r switch as such:
php -r 'echo function_exists("foo") ? "yes" : "no";'
The above PHP command above should output no and returns 0 as you can see:
>>> php -r 'echo function_exists("foo") ? "yes" : "no";'
no
>>> echo $? # print the return value of the pr...
Inheriting from a template class in c++
... way you speak about them determines the way to think about them.
Specifically, Area is not a template class, but a class template. That is, it is a template from which classes can be generated. Area<int> is such a class (it's not an object, but of course you can create an object from that cl...
Can you use if/else conditions in CSS?
...ks something like this:
p {
background-position: <?php echo (@$_GET['foo'] == 'bar')? "150" : "4"; ?>px 8px;
}
In this case, you will however have a performance impact, since caching such a stylesheet will be difficult.
...
Proper MIME media type for PDF files
...lication/pdf type should be used - unless you need to be compatible with really old software don't use x-pdf ...
– janniks
Feb 3 at 10:39
...
Python syntax for “if a or b or c but not all of them”
...three command line arguments. (Either it runs on default behavior or needs all three values specified.)
15 Answers
...
linq query to return distinct field values from a list of objects
... it's easy - project to that with Select and then use the normal Distinct call.)
In MoreLINQ we have the DistinctBy operator which you could use:
var distinct = list.DistinctBy(x => x.typeID);
This only works for LINQ to Objects though.
You can use a grouping or a lookup, it's just somewhat ...