simultaneous

问题 I was googling this problem for many days but I didn't find a solution for my simple problem. I'm trying to play a video while recording sound. Recording sound works fine without the video. And the video works fine without the recording. As soon as I put both together, the recording throws values which do not react on sound and the video is not playing anymore. By the way this happens only on my device (iPhone 4 / iOS5). In the simulator everything works fine. This is a reduced version of my

问题 In Python I can do this w,x,y,z = (1,1,2,3) But suppose I only need the values of x and y. Is there a way to only simultaneously assign a few variables (while still keeping the beautiful simultaneous assignment syntax?). I'm hoping to find something along the lines of MATLAB's tilde operator ~,x,y,~ = (1,1,2,3) # This is not valid Python code I'm aware that I can just define a dummy variable to do this, d,x,y,d = (1,1,2,3) But I am curious if there is a special operator just for this purpose.

问题 The code below only access one list at a time and looking ahead 1 element each loop: from itertools import izip_longest alist = ['foo','bar','duh'] blist = ['ofo','ardavak','dot','dotdat'] for i, plus1 in izip_longest(alist, alist[1:], fillvalue=None): iplus1 = i + plus1 if plus1 is not None else "" for j, plus1 in izip_longest(blist, blist[1:], fillvalue=None): jplus1 = j + plus1 if plus1 is not None else "" How do i look ahead 1 element each loop for 2 list simultaneously? something like:

问题 I have a GameActivity. I also have a transparent ChatActivity running on top if the user presses the Chat options from the Menu (onOptionsItemSelected). The problem is, when a player starts the ChatActivity before I start the game, an odd behavior occurs and the game won't start. Is there any way I can keep GameActivity active while ChatActivity is visible? I fired up the ChatActivity using the normal way: startActivity(new Intent(GameActivity.this, ChatActivity.class)); Thanks for your help.

问题 It sometimes happens that two admins in our support team are trying to do the same sensitive operation on db table row (let's say, modifying the value in the row). We need to prevent that. (Row locking is not possible because tables are "myisam") I have thought of several solutions: setting the old value in the form and comparing it with the current one on submit <input name="money"><input type="hidden" name="old_money" value="10"> and then before updating: $currentmoney=value_from_query(

问题 So I would like to run two programs, a timer and a math question. But always the input seems to be stopping the timer funtion or not even run at all. Is there any ways for it to get around that? I'll keep the example simple. import time start_time = time.time() timer=0 correct = answer answer = input("9 + 9 = ") #technically a math question here #so here until i enter the input prevents computer reading the code while True: timer = time.time() - start_time if timer > 3: #3 seconds is the

问题 I have already converted user input of DNA code (A,T,G,C) into RNA code (A,U,G,C) . This was fairly easy RNA_Code=DNA_Code.replace('T','U') Now the next thing I need to do is convert the RNA_Code into it's compliment strand. This means I need to replace A with U, U with A, G with C and C with G, but all simultaneously. if I say RNA_Code.replace('A','U') RNA_Code.replace('U','A') it converts all the As into Us then all the Us into As but I am left with all As for both. I need it to take

问题 The HttpRequestPool class provides a solution. Many thanks to those who pointed this out. A brief tutorial can be found at: http://www.phptutorial.info/?HttpRequestPool-construct Problem I'd like to make concurrent/parallel/simultaneous HTTP requests in PHP. I'd like to avoid consecutive requests as: a set of requests will take too long to complete; the more requests the longer the timeout of one request midway through a set may cause later requests to not be made (if a script has an

问题 I'm a newbie in Python programming. My question is, how to download a few files at the same time. Not file by file but simultaneously from one directory on ftp. Now I use this script but I don't know how I can rebuild this code: filenames = [] ftp.retrlines("NLST", filenames.append) print filenames print path for filename in filenames: local_filename = filename print filename print local_filename f = open(local_filename, "wb") s = ftp.size(local_filename) sMB = s/(1024*1024) print "file name:

问题 Part of my code goes like this: while(1){ my $winmm = new Win32::MediaPlayer; $winmm->load('1.mp3'); $winmm->play; $winmm->volume(100); Do Some Stuff; last if some condition is met; } Problem is: I want the music to be always on when I'm in the Do Some Stuff stage in the while loop. But the length of the music is so short that it will come to a full stop before I go to the next stage, so I want the music to repeat itself, but the Win32::Mediaplayer module does not seem to have a repeat mode,