Common methods for NSString strings

Returns a substring based on a specified range
-(NSString *) Substringwithrange: (nsrange) range;

Compare two strings (ignoring case)

-(Nscomparisonresult) Caseinsensitivecompare: (NSString *) string;

Comparison of two strings

-(Nscomparisonresult) Localizedcompare: (NSString *) string;

Test whether the string starts with astring

-(BOOL) Hasprefix: (NSString *) astring;//this more commonly used

Test whether the string ends with astring

-(BOOL) Hassuffix: (NSString *) astring;//This is also more commonly used

Tests whether two strings are equal

-(BOOL) isequaltostring: (NSString *) astring;

Returns the first letter of each word in string strings, with the remaining letters lowercase

-(NSString *) capitalizedstring;

Returns a string converted to lowercase

-(NSString *) lowercasestring;

Returns a string converted to uppercase

-(NSString *) uppercasestring;

Returns a string converted to UTF8 encoded format

-(__strong const char *) utf8string;

Returns a string that converts a double type

-(double) doublevalue;

Returns a string that converts a float type

-(float) floatvalue;

Returns a string that converts the type int

-(int) intvalue;

Returns a string converted to the Nsinteger type

-(Nsinteger) IntegerValue