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What to return if Spring MVC controller method doesn't return value?

I am using jQuery's $.getJSON() to make asynchronous calls to my simple Spring MVC backend. Most of the Spring controller methods look like this: ...
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Best way to convert strings to symbols in hash

What's the (fastest/cleanest/straightforward) way to convert all keys in a hash from strings to symbols in Ruby? 31 Answers...
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What is an API key? [closed]

... further verify the origin and to prevent tampering with the values. Typically, if you can identify the source of a request positively, it acts as a form of authentication, which can lead to access control. For example, you can restrict access to certain API actions based on who's performing the re...
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Validating parameters to a Bash script

...ant script as far as I can tell; it doesn't use any bashisms, which is actually important because /bin/sh on Ubuntu is actually dash these days, not bash. share | improve this answer | ...
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How to check if an NSDictionary or NSMutableDictionary contains a key?

... Don't you want to use valueForKey, as that would call objectForKey if necessary? – Raffi Khatchadourian Dec 21 '11 at 0:39 6 ...
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Mvn install or Mvn package

...ow if I modified any java files then do I need to do Run as -> Mvn install or Mvn package ? 8 Answers ...
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Why does ContentResolver.requestSync not trigger a sync?

...n I trigger it from the Dev Tools Sync Tester application, however when I call ContentResolver.requestSync(account, authority, bundle) from my ContentProvider, my sync is never triggered. ...
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Request format is unrecognized for URL unexpectedly ending in

... Found a solution on this website All you need is to add the following to your web.config <configuration> <system.web> <webServices> <protocols> <add name="HttpGet"/> <add name="HttpPost"/> ...
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Draw line in UIView

...re are no errors - I wrote it without Xcode): UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 200, self.view.bounds.size.width, 1)]; lineView.backgroundColor = [UIColor blackColor]; [self.view addSubview:lineView]; [lineView release]; // You might also keep a reference to this view ...
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How can I make git show a list of the files that are being tracked?

... If you want to list all the files currently being tracked under the branch master, you could use this command: git ls-tree -r master --name-only If you want a list of files that ever existed (i.e. including deleted files): git log --pretty=f...