NSString compare options example ios

compare: options:

Returns the result of invoking compare:options:range: with a given mask as the options and the receiver’s full extent as the range.

- (NSComparisonResult)compare:(NSString *)aString options:(NSStringCompareOptions)mask

Parameters

aString

The string with which to compare the receiver.

This value must not be nil. If this value is nil, the behavior is undefined and may change in future versions of OS X.

mask

Options for the search—you can combine any of the following using a C bitwise OR operator:NSCaseInsensitiveSearch, NSLiteralSearch, NSNumericSearch. See String Programming Guide for details on these options.

Return Value of [NSString compare options]

The result of invoking compare:options:range: with a given mask as the options and the receiver’s full extent as the range.

Discussion of [NSString compare options]

If you are comparing strings to present to the end-user, you should typically use localizedCompare: orlocalizedCaseInsensitiveCompare: instead, or use compare:options:range:locale: and pass the user’s locale.

Example of [NSString compare options]

if([txtAnswer.text compare:answer options:NSCaseInsensitiveSearch] == NSOrderedSame)
{
    // Do somehing
}

Example of [NSString compare options]

NSComparisonResult result = [selectedString compare:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])];