simultaneous

Simultaneous assignment semantics in Python

由 谁说胖子不能爱 提交于 2019-11-26 20:41:15
问题 Consider the following Python 3 code: a = [-1,-1,-1] i = 0 And now consider the following two versions of a simultaneous assignment over both a and i: Assignment version 1: a[i],i = i,i+1 Assignment version 2: i,a[i] = i+1,i I would expect these two versions of simultaneous assignments to be semantically equivalent. However, if you check the values of a and i after each one of the simultaneous assignments, you get different states: Output for print(a,i) after assignment version 1: [0, -1, -1]

Play two sounds simultaneusly

由 ↘锁芯ラ 提交于 2019-11-26 18:52:16
Is there a way to play two sounds at the same time? I know that SoundPlayer isn't able to do this. I can't use SoundEffect as I believe it's only part of XNA. The two required sounds will be called at unknown and random times. The sound needs to be be controlled after it is played. i.e., the sound must be able to be stopped before it has finished playing. Reference PresentationCore and WindowsBase and try this... var p1 = new System.Windows.Media.MediaPlayer(); p1.Open(new System.Uri(@"C:\windows\media\tada.wav")); p1.Play(); // this sleep is here just so you can distinguish the two sounds

Two simultaneous AJAX requests won't run in parallel

由 时光毁灭记忆、已成空白 提交于 2019-11-26 17:53:08
I have problem with two simultaneous AJAX requests running. I have a PHP script which is exporting data to XSLX. This operation take a lot of time, so I'm trying to show progress to the user. I'm using AJAX and database approach. Actually, I'm pretty sure it used to work but I can't figure out why, it's no longer working in any browser. Did something change in new browsers? $(document).ready(function() { $("#progressbar").progressbar(); $.ajax({ type: "POST", url: "{$BASE_URL}/export/project/ajaxExport", data: "type={$type}&progressUid={$progressUid}" // unique ID I'm using to track progress

iOS: Sample code for simultaneous record and playback

由 家住魔仙堡 提交于 2019-11-26 07:34:50
问题 I\'m designing a simple proof of concept for multitrack recorder. Obvious starting point is to play from file A.caf to headphones while simultaneously recording microphone input into file B.caf This question -- Record and play audio Simultaneously -- points out that there are three levels at which I can work: AVFoundation API (AVAudioPlayer + AVAudioRecorder) Audio Queue API Audio Unit API (RemoteIO) What is the best level to work at? Obviously the generic answer is to work at the highest

Play two sounds simultaneusly

由 点点圈 提交于 2019-11-26 06:38:20
问题 Is there a way to play two sounds at the same time? I know that SoundPlayer isn\'t able to do this. I can\'t use SoundEffect as I believe it\'s only part of XNA. The two required sounds will be called at unknown and random times. The sound needs to be be controlled after it is played. i.e., the sound must be able to be stopped before it has finished playing. 回答1: Reference PresentationCore and WindowsBase and try this... var p1 = new System.Windows.Media.MediaPlayer(); p1.Open(new System.Uri(

Single line with multiple commands using Windows batch file

由 我是研究僧i 提交于 2019-11-25 21:42:12
问题 I try to understand how multiple commands in a single command line in a batch file work. dir & md folder1 & rename folder1 mainfolder And other case with similar commands, but & substituted with && . dir && md folder1 && rename folder1 mainfolder 1. What is the difference between this two cases? Other thing I want to ask: One-liner batch.bat : dir & md folder1 & rename folder1 mainfolder Multi-liner batch.bat : dir md folder1 rename folder1 mainfolder 2. Are this one-liner and multi-liner
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