大约有 30,000 项符合查询结果（耗时：0.0699秒） [XML]
How to concatenate two MP4 files using FFmpeg?
...puts).
ffmpeg -i opening.mkv -i episode.mkv -i ending.mkv \
-filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a]
concat=n=3:v=1:a=1 [v] [a]" \
-map "[v]" -map "[a]" output.mkv
Note that this method performs a re-encode.
2. concat demuxer
Use this method wh...
Can I get Memcached running on a Windows (x64) 64bit environment?
...x
http://allegiance.chi-town.com/Download.aspx?dl=Releases/MemCacheDManager_1_0_3_0.msi&rurl=MemCacheDManager.aspx
To unpack the msi:
msiexec /a Releases_MemCacheDManager_1_0_3_0.msi /qb TARGETDIR=c:\memcached
share
...
What do the terms “CPU bound” and “I/O bound” mean?
...:
#define SIZE 1000000000
unsigned int is[SIZE];
unsigned int sum = 0;
size_t i = 0;
for (i = 0; i < SIZE; i++)
/* Each one of those requires a RAM access! */
sum += is[i]
Parallelizing that by splitting the array equally for each of your cores is of limited usefulness on common modern d...
What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
...sed at the top-level of a script.
js> {"t":"continue"}
typein:2: SyntaxError: invalid label:
typein:2: {"t":"continue"}
typein:2: ....^
For this example to be exploitable by way of Object() constructor remapping, it would require the API to have instead returned the object inside of a set of p...
Equivalent of String.format in jQuery
...
Many of the above functions (except Julian Jelfs's) contain the following error:
js> '{0} {0} {1} {2}'.format(3.14, 'a{2}bc', 'foo');
3.14 3.14 afoobc foo
Or, for the variants that count backwards from the end of the argument list:
js> '{0} {0} {1} {2}'.format(3.14, 'a{0}bc', 'foo');
3.14...
How do I use the conditional operator (? :) in Ruby?
... write it on multiple lines:
(true) ? 1 : 0
Normally Ruby will raise an error if you attempt to split it across multiple lines, but you can use the \ line-continuation symbol at the end of a line and Ruby will be happy:
(true) \
? 1 \
: 0
This is a simple example, but it can be very u...
Ignoring time zones altogether in Rails and PostgreSQL
...y 0 in Unix and Postgres reckoning */
#define UNIX_EPOCH_JDATE 2440588 /* == date2j(1970, 1, 1) */
#define POSTGRES_EPOCH_JDATE 2451545 /* == date2j(2000, 1, 1) */
The microsecond resolution translates to a maximum of 6 fractional digits for seconds.
timestamp
A value typed as times...
Proper Repository Pattern Design in PHP?
...ters, validation, whatever.
class User
{
public $id;
public $first_name;
public $last_name;
public $gender;
public $email;
public $password;
}
Repository Interface
Before I create my user repository, I want to create my repository interface. This will define the "contract...
How can I search for a commit message on GitHub?
...
I get a permission error when searching a private repo I have read / write access to.
– anon58192932
Dec 13 '17 at 19:17
1
...
Resize image in PHP
...k with images.
With GD, for example, it's as simple as...
function resize_image($file, $w, $h, $crop=FALSE) {
list($width, $height) = getimagesize($file);
$r = $width / $height;
if ($crop) {
if ($width > $height) {
$width = ceil($width-($width*abs($r-$w/$h)));
...