Any way to replace characters on Swift String

Question

I am looking for a way to replace characters in a Swift String   Example   This is my string   I would like to replace     with     to get  This is my string    How can I achieve this

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var str    quot This is my string quot   print str replacingOccurrences of   quot   quot   with   quot   quot     Output is This is my string

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A Swift 3 solution along the lines of Sunkas s   extension String       mutating func replace   originalString String  with newString String            self   self replacingOccurrences of  originalString  with  newString            Use   var string    foo   string replace      with       print string    Output   foo

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Swift 3  Swift 4  Swift 5 Solution  let exampleString    Example string     Solution suggested above in Swift 3 0 let stringToArray   exampleString components separatedBy       let stringFromArray   stringToArray joined separator          Swiftiest solution let swiftyString   exampleString replacingOccurrences of       with

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If you don t want to use the Objective-C NSString methods  you can just use split and join   var string    This is my string  string   join      split string  isSeparator     0              split string  isSeparator     0           returns an array of strings    This    is    my    string      join joins these elements with a    resulting in the desired output   This is my string

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Here s an extension for an in-place occurrences replace method on String  that doesn t no an unnecessary copy and do everything in place   extension String       mutating func replaceOccurrences lt Target  StringProtocol  Replacement  StringProtocol gt  of target  Target  with replacement  Replacement  options  String CompareOptions       locale  Locale    nil            var range  Range lt Index gt           repeat               range   self range of  target  options  options  range  range map   self index  0 lowerBound  offsetBy  replacement count    lt self endIndex    locale  locale              if let range   range                   self replaceSubrange range  with  replacement                          while range    nil            The method signature also mimics the signature of the built-in String replacingOccurrences   method   May be used in the following way   var string    this is a string  string replaceOccurrences of       with       print string      this is a string

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Here is the example for Swift 3    var stringToReplace    This my string  if let range   stringToReplace range of   my        stringToReplace  replaceSubrange range  with   your

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Did you test this     var test    This is my string   let replaced   test stringByReplacingOccurrencesOfString      withString       options  nil  range  nil

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Swift extension   extension String        func stringByReplacing replaceStrings set   String   with  String  - gt  String           var stringObject   self         for string in set               stringObject   self stringByReplacingOccurrencesOfString string  withString  with                    return stringObject            Go on and use it like let replacedString   yorString stringByReplacing replaceStrings                 with        The speed of the function is something that i can hardly be proud of  but you can pass an array of String in one pass to make more than one replacement

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A category that modifies an existing mutable String   extension String       mutating func replace originalString String  withString newString String                let replacedString   self stringByReplacingOccurrencesOfString originalString  withString  newString  options  nil  range  nil          self   replacedString           Use    name replace      withString

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Swift 4   let abc    Hello world   let result   abc replacingOccurrences of       with            options  NSString CompareOptions literal  range nil   print result    result     Output   result   Hello world

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You can use this   let s    This is my string  let modified   s replace      withString            If you add this extension method anywhere in your code   extension String       func replace target  String  withString  String  - gt  String              return self stringByReplacingOccurrencesOfString target  withString  withString  options  NSStringCompareOptions LiteralSearch  range  nil            Swift 3   extension String       func replace target  String  withString  String  - gt  String               return self replacingOccurrences of  target  with  withString  options  NSString CompareOptions literal  range  nil

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This is easy in swift 4 2  just use replacingOccurrences of       with       for replace  var myStr    This is my string  let replaced   myStr replacingOccurrences of       with       print replaced

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Xcode 11     Swift 5 1  The  mutating method of StringProtocol replacingOccurrences can be implemented as follow   extension RangeReplaceableCollection where Self  StringProtocol       mutating func replaceOccurrences lt Target  StringProtocol  Replacement  StringProtocol gt  of target  Target  with replacement  Replacement  options  String CompareOptions       range searchRange  Range lt String Index gt     nil            self    init replacingOccurrences of  target  with  replacement  options  options  range  searchRange               var name    This is my string  name replaceOccurrences of       with       print name      This is my string n

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This answer has been updated for Swift 4  amp  5  If you re still using Swift 1  2 or 3 see the revision history   You have a couple of options  You can do as  jaumard suggested and use replacingOccurrences    let aString    This is my string  let newString   aString replacingOccurrences of       with       options   literal  range  nil    And as noted by  cprcrack below  the options and range parameters are optional  so if you don t want to specify string comparison options or a range to do the replacement within  you only need the following   let aString    This is my string  let newString   aString replacingOccurrences of       with         Or  if the data is in a specific format like this  where you re just replacing separation characters  you can use components   to break the string into and array  and then you can use the join   function to put them back to together with a specified separator   let toArray   aString components separatedBy       let backToString   toArray joined separator         Or if you re looking for a more Swifty solution that doesn t utilize API from NSString  you could use this   let aString    Some search text   let replaced   String aString map        0                 0

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Less happened to me  I just want to change  a word or character  in the String  So I ve use the Dictionary    extension String      func replace   dictionary   String  String   - gt  String            var result   String             var i   -1           for  of   with    String  String in dictionary                i    1               if i lt 1                    result   self replacingOccurrences of  of  with  with                 else                    result   result replacingOccurrences of  of  with  with                                      return result                usage  let mobile     1  800  444-9999  let dictionary          00                               -       let mobileResult   mobile replace dictionary  print mobileResult     001800444999

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I am using this extension   extension String        func replaceCharacters characters  String  toSeparator  String  - gt  String           let characterSet   NSCharacterSet charactersInString  characters          let components   self componentsSeparatedByCharactersInSet characterSet          let result   components joinWithSeparator             return result            func wipeCharacters characters  String  - gt  String           return self replaceCharacters characters  toSeparator                Usage   let token     lt 34353 43434 gt   token replaceCharacters   lt   gt    toString

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you can test this   let newString   test stringByReplacingOccurrencesOfString      withString       options  nil  range  nil

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Swift 3 solution based on Ramis  answer   extension String       func withReplacedCharacters   characters  String  by separator  String  - gt  String           let characterSet   CharacterSet charactersIn  characters          return components separatedBy  characterSet  joined separator  separator            Tried to come up with an appropriate function name according to Swift 3 naming convention

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I ve implemented this very simple func   func convap  text   String  - gt  String       return text stringByReplacingOccurrencesOfString      withString            So you can write   let sqlQuery    INSERT INTO myTable  Field1  Field2  VALUES     convap value1       convap value2

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var str    This is my string  str   str replacingOccurrences of       with       print str

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I think Regex is the most flexible and solid way   var str    This is my string  let regex   try  NSRegularExpression pattern       options      let output   regex stringByReplacingMatchesInString      str      options          range  NSRange location  0  length  str characters count       withTemplate           output   This is my string

[swift] Any way to replace characters on Swift String?

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