PavelGnatyuk

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

int main(int argc, const char * argv[])
{

    @autoreleasepool {

        NSString *temp = @"world";
        int (^impyBlock)(id, int, int) = ^(id _self, int a, int b)

PavelGnatyuk

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{

    @autoreleasepool {
        
        NSString *text1 = @"String number 1.";
        NSString *text2 = [NSString stringWithFormat:@"String number %i.", 1];
        

PavelGnatyuk

+ (NSString *)mobileprovision
{
#if TARGET_IPHONE_SIMULATOR
    
    return nil;
    
#endif
    
    NSString *result = nil;
    NSString *profilePath = [[NSBundle mainBundle] pathForResource:@"embedded" ofType:@"mobileprovision"];

PavelGnatyuk

+ (BOOL)webFileExists:(NSURL *)url
{
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10.0];
    [request setHTTPMethod:@"HEAD"];
    NSHTTPURLResponse* response = nil;
    NSError* error = nil;
    NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
    NSLog(@"Response length: %i", [data length]);
    NSInteger code = [response statusCode];
    [request release];

PavelGnatyuk

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{

    @autoreleasepool {

        NSDictionary *attributes = @{ @"first": @"first value",
                                      @"second" : @3.14,
                                      @"third" : @[ @"one", @"two", @4, @5, @YES, @NO] };

PavelGnatyuk

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{

    @autoreleasepool {

        NSData *data = [NSData dataWithContentsOfFile:@"json_file.json"];
        NSError *error = nil;
        id json = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];

PavelGnatyuk

#import <Foundation/Foundation.h>

@interface Person : NSObject

@property (copy) NSString *firstName;
@property (copy) NSString *lastName;

- (instancetype)initWithFirstName:(NSString *)firstName andLastName:(NSString *)lastName;

@end

PavelGnatyuk

+ (void)decompressImage:(UIImage *)image
{
    if ( image ) {
        UIGraphicsBeginImageContext(CGSizeMake(1, 1));
        [image drawAtPoint:CGPointZero];
        UIGraphicsEndImageContext();
    }
}

PavelGnatyuk

- (BOOL)isPhoneValid:(NSString *)phone
{
    NSCharacterSet *phoneSet = [NSCharacterSet characterSetWithCharactersInString:@"-+0123456789()"];
    return [[phone stringByTrimmingCharactersInSet:phoneSet] isEqualToString:@""];
}

- (BOOL)isPhoneNumberValid:(NSString *)phone
{
    NSError *error;
    NSDataDetector *detector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypePhoneNumber error:&error];

PavelGnatyuk

- (NSString *)reverse:(NSString *)source {
    if (!source) {
        return nil;
    }
    
    NSMutableString *reversed = [NSMutableString new];
    [source enumerateSubstringsInRange:NSMakeRange(0, [source length]) options:NSStringEnumerationReverse | NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
        [reversed appendString:substring];
    }];