大约有 7,000 项符合查询结果（耗时：0.0395秒） [XML]
When do we need curly braces around shell variables?
...e to use
var=10
to assign. In order to read from the variable (in other words, 'expand' the variable), you must use $.
$var # use the variable
${var} # same as above
${var}bar # expand var, and append "bar" too
$varbar # same as ${varbar}, i.e expand a variable called varbar, if it exi...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
... For portability sake you should probably rewrite my code to use Int64 or Word64 (C isn't the only language with a long).
Question 2: Why is haskell so slow? Is there a compiler flag that
turns off the brakes or is it my implementation? (The latter is quite
probable as haskell is a book wit...
Vertically align text within a div [duplicate]
...
Works nice apart from not honouring word-wrap: break-word, which is broken in this case.
– ellimilial
Jun 29 '14 at 18:41
2
...
eval command in Bash and its typical uses
... splits value of the variable or the output from the command into separate words) and then treats each word as a wildcard pattern. For example:
$ ls
file1 file2 otherfile
$ set -- 'f* *'
$ echo "$1"
f* *
$ echo $1
file1 file2 file1 file2 otherfile
$ n=1
$ eval echo \${$n}
file1 file2 file1 file2 ot...
How to style the parent element when hovering a child element?
...olution:
$(".letter").hover(function() {
$(this).closest("#word").toggleClass("hovered")
});
.hovered {
background-color: lightblue;
}
.letter {
margin: 20px;
background: lightgray;
}
.letter:hover {
background: grey;
}
<script src="https://cdnjs.cloudf...
What is the difference between a port and a socket?
...e being strong functional parallels. Nevertheless, in network parlance the word "socket" carries so much baggage that a careful re-examination is necessary.
In the broadest possible sense, a port is a point of ingress or egress. Although not used in a networking context, the French word porte liter...
Bash empty array expansion with `set -u`
...
${parameter+word} only expands word if parameter is not unset.
– ikegami
Nov 22 '16 at 17:51
2
...
What does this thread join code mean?
...
In other words, if we want to "serialize" execution of t1 and t2 threads, we need to place t1.join() right after t1.start() since main thread started t1 (and t2 afterwards) and of course remove it from try/catch. Obviously, doing so, ...
Propagate all arguments in a bash shell script
...
I suggest anyone who wants to understand the subject of Word Splitting better, to read more about it here.
– Rany Albeg Wein
Jan 21 '16 at 4:07
4
...
Disable browser cache for entire ASP.NET website
...ng programmatically will always override any declared Attribute. In other words, using the OP's code will override any declared [OutputCache] attribute.
– Dave Black
Sep 13 '11 at 18:05
...