大约有 43,000 项符合查询结果（耗时：0.0657秒） [XML]
How to play a local video with Swift?
... should add it using the plus button
3. Code
Open your View Controller and write this code.
import UIKit
import AVKit
import AVFoundation
class ViewController: UIViewController {
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
playVideo()
...
Lock, mutex, semaphore… what's the difference?
...
A lock allows only one thread to enter the part that's locked and the lock is not shared with any other processes.
A mutex is the same as a lock but it can be system wide (shared by multiple processes).
A semaphore does the same as a mutex but allows x number of threads to enter, this...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
... copied from the storage engine layer to the SQL layer, VARCHAR fields are converted to CHAR to gain the advantage of working with fixed-width rows. So the strings in memory become padded out to the maximum length of your declared VARCHAR column.
When your query implicitly generates a temporary ta...
Rails update_attributes without save?
...ed, and they are to a degree, but this type of error can easily occur when converting data from an API, or even just using a series of data transformation and forgetting to Hash[] the results of the final .map. Maintain some code 50 lines above and 3 functions removed from your attribute assignment...
How can I get query string values in JavaScript?
.../This doesn't output anything, it just updates the $.QueryString object
//Convert object into string suitable for url a querystring (Requires jQuery)
$.param($.QueryString)
//This outputs something like...
//"param=newvalue&param2=val"
//Update the url/querystring in the browser's location bar...
Can you configure log4net in code instead of using a config file?
...d work.
I had to use this in F# (in a fsx script), so had some issues when converting it from C#. If you're interested in the end result (including a way to download log4net nuget package), see below:
nuget_log4net.fsx:
#!/usr/bin/env fsharpi
open System
open System.IO
open System.Net
#r "Syste...
How can I parse a CSV string with JavaScript, which contains comma in data?
...adjacent whitespace (which is ignored).
Find:
A JavaScript function which converts a valid CSV string (as defined above) into an array of string values.
Solution:
The regular expressions used by this solution are complex. And (IMHO) all non-trivial regular expressions should be presented in free-sp...
What's the best strategy for unit-testing database-driven applications?
...If that doesn't work, then I use a filter which takes the original SQL and converts that into the SQL for the in-memory database.
– Aaron Digulla
Jul 14 '14 at 8:57
...
application/x-www-form-urlencoded or multipart/form-data?
... rand(); if(data.indexOf(r) === -1){doStuff();break;}}. EML's suggestion (convert to base64 just to avoid matching substrings) is just plain odd, not to mention it comes with unneeded performance degradation. And all the trouble for nothing since the one line algorithm is equally straightforward an...
How can I specify a branch/tag when adding a Git submodule?
...nshine
Helped-by: Đoàn Trần Công Danh
Signed-off-by: Shourya Shukla
Convert submodule subcommand 'set-branch' to a builtin and call it via git submodule.sh.
share
|
improve this answer
...