How to compare two string in objective-C?
How to compare two string in objective-C?
Use the -isEqualToString: method to compare the value of two strings. Using the C == operator will simply compare the addresses of the objects.
How do you check if two strings are equal in Objective-C?
To compare two strings equality, use isEqualToString: . BOOL result = [firstString isEqualToString:secondString]; To compare with the empty string ( @”” ), better use length .
How do I check if a string contains a substring in Objective-C?
To check if a string contains another string in objective-c, we can use the rangeOfString: instance method where it returns the {NSNotFound, 0} if a ‘searchString’ is not found or empty (“”). Output: string contains you!
How do I create an NSArray in Objective-C?
In addition to the provided initializers, such as initWithObjects: , you can create an NSArray object using an array literal. NSArray *array = @[someObject, @”Hello, World!”, @42]; In Objective-C, the compiler generates code that makes an underlying call to the arrayWithObjects:count: method.
How do you check if two strings are equal in Swift?
Test for string equality in Swift In Swift, you can check for string and character equality with the “equal to” operator ( == ) and “not equal to” operator ( != ).
How do you check whether a string contains any words from an array?
foreach ($bads as $bad) { if (strpos($string,$bad) !== false) { //say NO! }…
- Thank you @Sanjay!
- Hi It is because this works in a for each loop and all time it check each words with your bad words array.
- Yes, you are correct, the problem persists with the exit in the if part, sorry.
What is the difference between string and NSString?
NSString is the abstract base class for a cluster of classes representing strings. Its interface does not include any methods to change the string contents after initialization. NSMutableString is the abstract base class for a cluster of classes representing strings whose contents can be changed.
What is difference between array and NSArray?
Array is a struct, therefore it is a value type in Swift. NSArray is an immutable Objective C class, therefore it is a reference type in Swift and it is bridged to Array . NSMutableArray is the mutable subclass of NSArray . Because foo changes the local value of a and bar changes the reference.