大约有 14,600 项符合查询结果（耗时：0.0266秒） [XML]
What are the differences and similarities between ffmpeg, libav, and avconv?
... period the "not developed anymore" message was displayed to tell users to start using avconv instead of their counterfeit version of ffmpeg. This confused users into thinking that FFmpeg (the project) is dead, which is not true. A bad choice of words, but I can't imagine Libav not expecting such a ...
Animate visibility modes, GONE and VISIBLE
...ibility == VISIBLE)
{
if (inAnimation != null) startAnimation(inAnimation);
}
else if ((visibility == INVISIBLE) || (visibility == GONE))
{
if (outAnimation != null) startAnimation(outAnimation);
}
}
...
node and Error: EMFILE, too many open files
...f already exists)
root soft nofile 40000
root hard nofile 100000
restart your nodejs and logout/login from ssh.
this may not work for older NodeJS you'll need to restart server
use instead of if your node runs with different uid.
...
View array in Visual Studio debugger? [duplicate]
...his into the watch window;
ptr+100,10
to show a list of the 10 elements starting at ptr[100]. Beware that the displayed array subscripts will start at [0], so you will have to remember that ptr[0] is really ptr[100] and ptr[1] is ptr[101] etc.
...
What exactly do the Vagrant commands do?
...hat the Vagrant commands do, other than references throughout the "getting started" tutorial.
3 Answers
...
Best way to structure a tkinter application? [closed]
...
I advocate an object oriented approach. This is the template that I start out with:
# Use Tkinter for python 2, tkinter for python 3
import tkinter as tk
class MainApplication(tk.Frame):
def __init__(self, parent, *args, **kwargs):
tk.Frame.__init__(self, parent, *args, **kwargs...
Listing only directories in UNIX
..., output is same as ls -1 *, but only with directories
and entries do not start with a dot
share
|
improve this answer
|
follow
|
...
How to remove the first character of string in PHP?
...ll probably help you here:
$str = substr($str, 1);
Strings are indexed starting from 0, and this functions second parameter takes the cutstart. So make that 1, and the first char is gone.
share
|
...
Extracting the last n characters from a string in R
... "string"
Or, as Max points out in a comment to this answer,
str_sub(x, start= -6)
[1] "string"
share
|
improve this answer
|
follow
|
...
Looking to understand the iOS UIViewController lifecycle
...the screen.
ViewDidAppear - Called after the view appears - great place to start an animations or the loading of external data from an API.
ViewWillDisappear/DidDisappear - Same idea as ViewWillAppear/ViewDidAppear.
ViewDidUnload/ViewDidDispose - In Objective-C, this is where you do your clean-up an...