How do I get the first character of a NSString?

How to extract first n characters of an NSString

  1. NSString *something = @”123456789″;
  2. NSRange myRange = NSMakeRange(2, 3);
  3. something = [something substringWithRange:myRange];

How do you capitalize the first letter of a string in Objective C?

Just use the capitalizedString method. A string with the first character from each word in the receiver changed to its corresponding uppercase value, and all remaining characters set to their corresponding lowercase values.

How do you capitalize the first letter in IOS?

Open the Settings app. Tap the section called “General.” Tap “Keyboard.” Tap “Auto-Capitalization” to toggle it off.

What is a CFString?

CFString provides functions for finding and comparing strings. It also provides functions for reading numeric values from strings, for combining strings in various ways, and for converting a string to different forms (such as encoding and case changes).

How do I get the first character of a string in Swift?

In Swift, the first property is used to return the first character of a string.

How do you capitalize the first letter on an Apple keyboard?

All replies

  1. Select the text you want to change, then tap .
  2. Tap in the Font section of the controls.
  3. If you can’t see text controls, tap Text or Cell.
  4. Tap a capitalisation option.

What is CFData?

CFData is “toll-free bridged” with its Cocoa Foundation counterpart, NSData . What this means is that the Core Foundation type is interchangeable in function or method calls with the bridged Foundation object.

What is CFTypeRef?

The CFTypeRef type is the base type defined in Core Foundation. It is used as the type and return value in several polymorphic functions. It is a generic object reference that acts as a placeholder for other true Core Foundation objects.

How to initialize NSString with UTF8 encoding?

NSString *string = [ [NSString alloc]initWithCString:”test” encoding:NSUTF8StringEncoding]; Returns an NSString object initialized by copying the characters from a given C array of UTF8-encoded bytes.

How do you initialize an NSString object in C?

Returns an NSString object initialized using the characters in a given C array, interpreted according to a given encoding. NSString *string = [ [NSString alloc]initWithCString:”test” encoding:NSUTF8StringEncoding]; Returns an NSString object initialized by copying the characters from a given C array of UTF8-encoded bytes.

What is an NSString in Java?

An NSString object encodes a Unicode-compliant text string, represented as a sequence of UTF–16 code units. All lengths, character indexes, and ranges are expressed in terms of 16-bit platform-endian values, with index values starting at 0.

Why are UTF-16 characters in NSString big endian?

When creating an NSString object from a UTF-16-encoded string (or a byte stream interpreted as UTF-16), if the byte order is not otherwise specified, NSString assumes that the UTF-16 characters are big-endian, unless there is a BOM (byte-order mark), in which case the BOM dictates the byte order.