Changes

Working with String Objects in Objective-C

582 bytes added, 20:49, 3 November 2009
Checking for String Prefixes and Suffixes
== Checking for String Prefixes and Suffixes ==
 
A string object can be tested to identify whether the string begins or ends with a particular sequence of characters (otherwise known as prefixes and suffixes). This is achieved using the ''hasPrefix'' and ''hasSuffix'' methods respectively, both of which return boolean values on whether a match is found or not.
 
<pre>
NSString *string1 = @"The quick brown fox jumped";
 
BOOL result;
 
result = [string1 hasPrefix: @"The"];
 
if (result)
NSLog (@"String begins with The");
 
result = [string1 hasSuffix: @"dog"];
 
if (result)
NSLog (@"String ends with dog");
</pre>
== Converting to Upper or Lower Case ==