包含许多常见的NSString操作:PJR-NSString-Category

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通过使用这个NSString Category,您可以执行许多常见的NSString操作。不需要创建任何方法或任何class。import this category in your controller by #import "NSString+PJR.h" and you can perform all NSString operations given in this category like:
//Examples of NSString Category
NSString *testStr = @"Hello";
if([testStr isValid]){
NSLog(@"It is a Valid String");
}
NSString *blankStr = @"  ";
if([blankStr isBlank]){
NSLog(@"It is a blank String");
}
NSString *noOfWordsStr = @"Number of Words";
NSLog(@"Number of words are :%d",[noOfWordsStr countNumberOfWords]);
if([noOfWordsStr containsString:@"of"]){
NSLog(@"YES");
}
if([noOfWordsStr isBeginsWith:@"N"]){
NSLog(@"YES");
}
if([noOfWordsStr isEndssWith:@"s"]){
NSLog(@"YES");
}
NSLog(@"string after replace charcter is :%@",[noOfWordsStr replaceCharcter:@"of" withCharcter:@"offfff"]);
NSLog(@"Get substring :%@",[noOfWordsStr getSubstringFrom:1 to:6]);
NSLog(@"Add string :%@",[noOfWordsStr addString:@" are 3"]);
NSLog(@"Removed string :%@",[noOfWordsStr removeSubString:@"of"]);
NSString *letterStr = @"abcd";
NSString *numberStr = @"1234";
NSString *letterNuberStr = @"sdf545";
if([letterStr containsOnlyLetters]){
NSLog(@"Contanis only letters");
}
if([numberStr containsOnlyNumbers]){
NSLog(@"Contanis only numbers");
}
if([letterNuberStr containsOnlyNumbersAndLetters]){
NSLog(@"Contanis letters and numbers");
}
NSArray *array = [NSArray arrayWithObjects:letterStr,numberStr,letterNuberStr, nil];
if([numberStr isInThisarray:array]){
NSLog(@"Yes number string is in this array");
}
NSLog(@"String from array is :%@",[NSString getStringFromArray:array]);
NSLog(@"Array from String is :%@",[noOfWordsStr getArray]);
NSLog(@"My Application Version number is :%@",[NSString getMyApplicationVersion]);
NSLog(@"My Application name is :%@",[NSString getMyApplicationName]);
if([@"pjr@gmail.com" isValidEmail]){
NSLog(@"It is valid Email");
}
if(![@"21323gf" isVAlidPhoneNumber]){
NSLog(@"It is not valid Phone number");
}
if([@"http://www.google.com" isValidUrl]){
NSLog(@"It is valid URL");
}

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