hebertialmeida

import UIKit

var numbers = [7, 7, 7, 1, 1, 1, 2, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8]
var filter = [Int]()

for number in numbers {
    if !contains(filter, number) {
        filter.append(number)
    }
}

hebertialmeida

- (void)openThisURL:(NSString *)launchUrl withFallback:(NSString *)fallback
{
    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:launchUrl]]) {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:launchUrl]];
    } else {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:fallback]];
    }
}

hebertialmeida

- (NSString *)mostCommonCharacter:(NSString *)string
{
    __block NSMutableArray *charIndex = [[NSMutableArray alloc] init];
    
    // Enumerate
    [string enumerateSubstringsInRange:NSMakeRange(0, string.length)  options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop)
    {
        [charIndex addObject:substring];
    }];