Append String in Swift

Question

I am new to iOS  I am currently studying iOS using Objective-C and Swift   To append a string in Objective-C I am using following code    NSString  string1     This is    NSString  string2     Swift Language    NSString  appendString  NSString stringWithFormat          string1 string2    NSLog   APPEND STRING     appendString     Anyone please guide me

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Strings concatenate in Swift language   let string1    one   let string2    two   var concate      string1   string2    playgroud output is  one two

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SWIFT 2 x  let extendedURLString   urlString stringByAppendingString   amp requireslogin true     SWIFT 3 0  From Documentation   You can append a Character value to a String variable with the String type   s append   method   so we cannot use append for Strings   urlString      amp requireslogin true        Operator works in both versions  let extendedURLString   urlString   amp requireslogin true

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You can simply append string like   var worldArg    world is good   worldArg      to live

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Add this extension somewhere   extension String       mutating func addString str  String            self   self   str           Then you can call it like   var str1    hi  var str2     my name is  str1 addString str2  println str1    hi my name is   A lot of good Swift extensions like this are in my repo here  check them out  https   github com goktugyil EZSwiftExtensions

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According to Swift 4 Documentation  String values can be added together  or concatenated  with the addition operator     to create a new String value   let string1    hello  let string2     there  var welcome   string1   string2    welcome now equals  hello there    You can also append a String value to an existing String variable with the addition assignment operator        var instruction    look over  instruction    string2    instruction now equals  look over there    You can append a Character value to a String variable with the String type   s append   method   let exclamationMark  Character       welcome append exclamationMark     welcome now equals  hello there

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Its very simple    For ObjC        NSString  string1     This is        NSString  string2     Swift Language     ForSwift       let string1    This is      let string2    Swift Language    For ObjC AppendString               NSString  appendString  NSString stringWithFormat          string1 string2     For Swift AppendString               var appendString1      string1    string2       var appendString2   string1 string2   Result               print  APPEND STRING 1   appendString1        print  APPEND STRING 2   appendString2      Complete Code In Swift       let string1    This is      let string2    Swift Language      var appendString      string1    string2       var appendString1   string1 string2     print  APPEND STRING1   appendString1        print  APPEND STRING2   appendString2

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Swift2 x   String  hello    stringByAppendingString  world      hello world

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let string2     there  var instruction    look over    choice 1     instruction    string2     println instruction    choice 2    var Str   instruction   string2    println Str    ref this

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In the accepted answer PREMKUMAR there are a couple of errors in his Complete code in Swift answer  First print should read  appendString  and Second print should read  appendString1    Also  updated println deprecated in Swift 2 0  His  let string1    This is  let string2    Swift Language  var appendString      string1    string2   var appendString1   string1 string2 println  APPEND STRING1   appendString1    println  APPEND STRING2   appendString2      Corrected  let string1    This is  let string2    Swift Language  var appendString      string1    string2   var appendString1   string1 string2 print  APPEND STRING   appendString    print  APPEND STRING1   appendString1

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In Swift  appending strings is as easy as   let stringA    this is a string  let stringB    this is also a string  let stringC   stringA   stringB   Or you can use string interpolation   let stringC      stringA    stringB     Notice there will now be whitespace between them   Note  I see the other answers are using var a lot  The strings aren t changing and therefore should be declared using let  I know this is a small exercise  but it s good to get into the habit of best practices  Especially because that s a big feature of Swift

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var string1    This is    var string2    Swift Language   var appendString   string1   string2  println  APPEND STRING    appendString

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let firstname    paresh  let lastname    hirpara  let itsme      firstname    lastname

[ios] Append String in Swift

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