Strip NSString spaces from start and end.

curry/Categories/Foundation/NSString+TKCategory.h

@@ -40,6 +40,17 @@
  */
 @property (nonatomic, getter=isEmail, readonly) BOOL email;
 
+
+/** Returns a `NSString` that removes blank space from the start and end of string.
+ @return A stripped string.
+ */
+@property (nonatomic, readonly, copy) NSString *stripWhitespace;
+
+/** Returns a `NSString` that removes blank space and new lines from the start and end of string.
+ @return A stripped string.
+ */
+@property (nonatomic, readonly, copy) NSString *stripWhitepspaceAndNewlines;
+
 /** Returns a `NSString` that is URL friendly. 
  @return A URL encoded string.
  */

curry/Categories/Foundation/NSString+TKCategory.m

@@ -143,6 +143,16 @@ - (BOOL) isEmail{
     return [regExPredicate evaluateWithObject:[self lowercaseString]];  
 }
 
+
+- (NSString*) stripWhitespace{
+	return [self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+}
+
+- (NSString*) stripWhitepspaceAndNewlines{
+	return [self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
+}
+
+
 - (NSString*) URLEncode{
 	NSMutableCharacterSet *set = [NSCharacterSet URLQueryAllowedCharacterSet].mutableCopy;
 	[set removeCharactersInString:@";?/:#& =+$,%<>~%"];

curryTests/NSStringTests.h

@@ -43,6 +43,8 @@
 
 - (void) testShouldHaveString;
 
+- (void) testShouldHaveStripWhitespace;
+
 - (void) testShouldPassCreditCardValidation;
 
 - (void) testShouldFormatPhoneString;

curryTests/NSStringTests.m

@@ -59,6 +59,17 @@ - (void) testShouldCountWhitespaceCorrectly{
 	XCTAssertEqual(@"      \n\t".lengthWithoutWhitespace, 0);
 }
 
+
+- (void) testShouldHaveStripWhitespace{
+
+	NSString *resultString = @"This is the final result string.";
+	NSString *test1 = [NSString stringWithFormat:@"   %@    ",resultString];
+	NSString *test2 = [NSString stringWithFormat:@"\n \t   %@    \n \t ",resultString];
+	XCTAssertEqualObjects(test1.stripWhitespace,resultString);
+	XCTAssertEqualObjects(test2.stripWhitepspaceAndNewlines,resultString);
+
+}
+
 - (void) testShouldEncodeString{
 
 	XCTAssertEqualObjects([@"" URLEncode], @"");