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How do I record audio on iPhone with AVAudioRecorder?

... Actually, there are no examples at all. Here is my working code. Recording is triggered by the user pressing a button on the navBar. The recording uses cd quality (44100 samples), stereo (2 channels) linear pcm. Beware: if you wa...
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Secure hash and salt for PHP passwords

It is currently said that MD5 is partially unsafe. Taking this into consideration, I'd like to know which mechanism to use for password protection. ...
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git still shows files as modified after adding to .gitignore

...re saying that you need to commit after removing the cached files? That really seems counter-intuitive; these are files I do NOT want to commit. And I do not want them deleted from the repository (I just want them to no longer be hanging around cluttering my git status). Or am I just really confu...
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How to check file MIME type with javascript before upload?

...emo at the bottom. Check that your browser supports both File and Blob. All major ones should. if (window.FileReader && window.Blob) { // All the File APIs are supported. } else { // File and Blob are not supported } Step 1: You can retrieve the File information from an <in...
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How to unescape HTML character entities in Java?

Basically I would like to decode a given Html document, and replace all special chars, such as " " -> " " , ">" -> ">" . ...
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How do popular apps authenticate user requests from their mobile app to their server?

...I imagine they use a "token" based security system, so the password is actually never stored anywhere, just used the first time to authenticate. So the app initially posts the username/password (over ssl) and the server returns a token that the app stores. For subsequent sync attempts the token is s...
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How can I get zoom functionality for images?

...t this might slow it down. 3. Do you have a phone you could test on? 4. If all else fails, see if multiplying mScaleFactor by 2 (if > 1) or 0.5 (if < 1) helps your situation. – Mike Ortiz Oct 4 '11 at 0:51 ...
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extract part of a string using bash/cut/split

... MYVAR="users/joebloggs/domain.com" Remove the path leaving file name (all characters up to a slash): echo ${MYVAR##*/} domain.com Remove the file name, leaving the path (delete shortest match after last /): echo ${MYVAR%/*} users/joebloggs Get just the file extension (remove all before la...
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What is the difference between a port and a socket?

...because a connection is identified by both its local and remote endpoints, allowing traffic to be routed to a specific service instance. There can only be one listener socket for a given address/port combination. Exposition This was an interesting question that forced me to re-examine a number of...
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Expand/collapse section in UITableView in iOS

...LOOK like a header, and setup the tableView:didSelectRowAtIndexPath to manually expand or collapse the section it is in. I'd store an array of booleans corresponding the the "expended" value of each of your sections. Then you could have the tableView:didSelectRowAtIndexPath on each of your custom h...