大约有 45,000 项符合查询结果（耗时：0.0493秒） [XML]
Extract substring in Bash
...in the form someletters_12345_moreleters.ext , I want to extract the 5 digits and put them into a variable.
22 Answers
...
How do I read any request header in PHP
... of all headers, the quickest method is:
<?php
// Replace XXXXXX_XXXX with the name of the header you need in UPPERCASE (and with '-' replaced by '_')
$headerStringValue = $_SERVER['HTTP_XXXXXX_XXXX'];
ELSE IF: you run PHP as an Apache module or, as of PHP 5.4, using FastCGI (simple method):
...
java get file size efficiently
...
Well, I tried to measure it up with the code below:
For runs = 1 and iterations = 1 the URL method is fastest most times followed by channel. I run this with some pause fresh about 10 times. So for one time access, using the URL is the fastest way I...
Why is `std::move` named `std::move`?
The C++11 std::move(x) function doesn't really move anything at all. It is just a cast to r-value. Why was this done? Isn't this misleading?
...
Express-js can't GET my static files, why?
.../static" to serve static content only when their request path is prefixed with "/static".
// GET /static/style.css etc.
app.use('/static', express.static(__dirname + '/public'));
share
|
i...
What is the meaning of “__attribute__((packed, aligned(4))) ”
It is C language.It is written that:
3 Answers
3
...
How to add a progress bar to a shell script?
...
You can implement this by overwriting a line. Use \r to go back to the beginning of the line without writing \n to the terminal.
Write \n when you're done to advance the line.
Use echo -ne to:
not print \n and
to recognize escape sequences like \r.
H...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
... best practice if I want to require a relative file in Ruby and I want it to work in both 1.8.x and >=1.9.2?
11 Answers...
How to use C++ in Go
...
Update: I've succeeded in linking a small test C++ class with Go
If you wrap you C++ code with a C interface you should be able to call your library with cgo (see the example of gmp in $GOROOT/misc/cgo/gmp).
I'm not sure if the idea of a class in C++ is really expressible in Go, ...
How do I check if an object has a specific property in JavaScript?
...perty] or, even worse, x.key will give you completely misleading results.
It depends on what you're looking for. If you want to know if an object physically contains a property (and it is not coming from somewhere up on the prototype chain) then object.hasOwnProperty is the way to go. All modern br...