You could use [deleteCharactersInRange:][1]

	NSMutableString *str = [NSMutableString stringWithString:@&quot;FooBarx&quot;];
	[str deleteCharactersInRange:NSMakeRange([str length]-1, 1)];


  [1]: http://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSMutableString_Class/Reference/Reference.html#//apple_ref/doc/uid/20000156-deleteCharactersInRange_

Hey Everyone, I was wondering what methods are standard within the industry to do browser detection in Rails? Is there a gem, library or sample code somewhere that can help determine the browser and apply a class or id to the body element of the (X)HTML? Thanks, I&#39;m just wondering what everyone uses and whether there is accepted method of doing this?

I know that we can get the user.agent and parse that string, but I&#39;m not sure if that is that is an acceptable way to do browser detection.

Also, I&#39;m not trying to debate feature detection here, I&#39;ve read multiple answers for that on StackOverflow, all I&#39;m asking for is what you guys have done. 

[UPDATE]

So thanks to [faunzy][1] on GitHub, I&#39;ve sort of understand a bit about checking the user agent in Rails, but still not sure if this is the best way to go about it in Rails 3. But here is what I&#39;ve gotten so far:

    def users_browser
    user_agent =  request.env[&#39;HTTP_USER_AGENT&#39;].downcase 
    @users_browser ||= begin
      if user_agent.index(&#39;msie&#39;) &amp;&amp; !user_agent.index(&#39;opera&#39;) &amp;&amp; !user_agent.index(&#39;webtv&#39;)
      				&#39;ie&#39;+user_agent[user_agent.index(&#39;msie&#39;)+5].chr
  		elsif user_agent.index(&#39;gecko/&#39;)
  			&#39;gecko&#39;
  		elsif user_agent.index(&#39;opera&#39;)
  			&#39;opera&#39;
  		elsif user_agent.index(&#39;konqueror&#39;)
  			&#39;konqueror&#39;
  		elsif user_agent.index(&#39;ipod&#39;)
  			&#39;ipod&#39;
  		elsif user_agent.index(&#39;ipad&#39;)
  			&#39;ipad&#39;
  		elsif user_agent.index(&#39;iphone&#39;)
  			&#39;iphone&#39;
  		elsif user_agent.index(&#39;chrome/&#39;)
  			&#39;chrome&#39;
  		elsif user_agent.index(&#39;applewebkit/&#39;)
  			&#39;safari&#39;
  		elsif user_agent.index(&#39;googlebot/&#39;)
  			&#39;googlebot&#39;
  		elsif user_agent.index(&#39;msnbot&#39;)
  			&#39;msnbot&#39;
  		elsif user_agent.index(&#39;yahoo! slurp&#39;)
  			&#39;yahoobot&#39;
  		#Everything thinks it&#39;s mozilla, so this goes last
  		elsif user_agent.index(&#39;mozilla/&#39;)
  			&#39;gecko&#39;
  		else
  			&#39;unknown&#39;
  		end
		end
		
		return @users_browser
    end


  [1]: https://github.com/traction/browser_detect/blob/4520d4d935a2cefdfc6e1b31fe08f67e351d5a60/lib/browser_detect.rb

Rails Browser Detection Methods

Is there any way I can add an existing folder to source control in TFS?  I have created a new folder outside of TFS, just in the file system, and would like to add it to source control, but the only apparent way to do this is the ridiculous workaround of renaming my new folder to a temp name, then creating the new folder in Source Control Explorer, then adding the items from my renamed, original new folder.

Add an existing folder to TFS source control

How does one remove the last character from an NSMutableString?

Removing the last character from an NSMutableString

<p>How does one remove the last character from an NSMutableString?</p>


I am using MKMapView and have added a number of annotation pins to the map about a 5-10 kilometre area. When I run the application my map starts zoomed out to show the whole world, what is the best way to zoom the map so the pins fit the view?

**EDIT:**
My initial thinking would be to use MKCoordinateRegionMake and calculate the coordinate centre, longitudeDelta and latitudeDelta from my annotations. I am pretty sure this will work, but I just wanted to check I was not missing anything obvious.

Code added, BTW: FGLocation is an class that conforms to `MKAnnotation`, locationFake is an `NSMutableArray` of these objects. Comments are always welcome ....

    - (MKCoordinateRegion)regionFromLocations {
        CLLocationCoordinate2D upper = [[locationFake objectAtIndex:0] coordinate];
        CLLocationCoordinate2D lower = [[locationFake objectAtIndex:0] coordinate];
        
        // FIND LIMITS
        for(FGLocation *eachLocation in locationFake) {
            if([eachLocation coordinate].latitude &gt; upper.latitude) upper.latitude = [eachLocation coordinate].latitude;
            if([eachLocation coordinate].latitude &lt; lower.latitude) lower.latitude = [eachLocation coordinate].latitude;
            if([eachLocation coordinate].longitude &gt; upper.longitude) upper.longitude = [eachLocation coordinate].longitude;
            if([eachLocation coordinate].longitude &lt; lower.longitude) lower.longitude = [eachLocation coordinate].longitude;
        }
        
        // FIND REGION
        MKCoordinateSpan locationSpan;
        locationSpan.latitudeDelta = upper.latitude - lower.latitude;
        locationSpan.longitudeDelta = upper.longitude - lower.longitude;
        CLLocationCoordinate2D locationCenter;
        locationCenter.latitude = (upper.latitude + lower.latitude) / 2;
        locationCenter.longitude = (upper.longitude + lower.longitude) / 2;
    
        MKCoordinateRegion region = MKCoordinateRegionMake(locationCenter, locationSpan);
        return region;
    }




Zooming MKMapView to fit annotation pins?

How can I change the font size of `UISearchBar` ?

Change the font size of UISearchBar

What are the values of a double/float on iOS, or the file that they&#39;re defined in? Or a macro, like INT_MAX?


What is the max. value of a double/float on iOS?

I have an application where I am displaying large images in a small space. 
The images are quite large, but I am only displaying them in 100x100 pixel frames.
My app is responding slowly because of the size fo the images I am using.

To improve performance, how can I resize the images programmatically using Objective-C?

How to resize the image programmatically in objective-c in iphone

How do I set bold and italic on `UILabel` of iPhone/iPad?
I searched the forum but nothing helped me. Could anyone help me?


Content Type	Original Author	Original Content on Stackoverflow
Question	some_id	View Question on Stackoverflow
Solution 1 - Objective C	Matthias Bauch	View Answer on Stackoverflow

Removing the last character from an NSMutableString

Objective C Problem Overview

Objective C Solutions

Solution 1 - Objective C

Add an existing folder to TFS source control

Rails Browser Detection Methods

Attributions