NSString+Extend

NSString+Extend.h

//
//  NSString+Extend.h
//
//  Created by Bakyt on 31.03.15.
//  Copyright (c) 2015 Bakyt. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSString (Extend)

- (NSString *)trim;
- (bool)isEmpty;
- (bool)isNotEmpty;
@end

NSString+Extend.m

//
//  NSString+Extend.m
//
//  Created by Bakyt on 31.03.15.
//  Copyright (c) 2015 Bakyt. All rights reserved.
//

#import "NSString+Extend.h"

@implementation NSString (Extend)

- (NSString *)trim
{
    NSString * str = [self stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];

    return str;
}

- (bool)isEmpty
{
    return self.trim.length == 0;
}

- (bool)isNotEmpty
{
    return !self.isEmpty;
}

@end