String Functions

substring()

• parameters:
  • string: string
  • start position: number
  • (optional) length: number
• result: string

substring("foobar",3) 
// "obar"

substring("foobar",3,3) 
// "oba"

string length()

• parameters:
  • string: string
• result: number

string length("foo") 
// 3

upper case()

• parameters:
  • string: string
• result: string

upper case("aBc4") 
// "ABC4"

lower case()

• parameters:
  • string: string
• result: string

lower case("aBc4") 
// "abc4"

substring before()

• parameters:
  • string: string
  • match: string
• result: string

substring before("foobar", "bar") 
// "foo"

substring after()

• parameters:
  • string: string
  • match: string
• result: string

substring after("foobar", "ob") 
// "ar"

contains()

• parameters:
  • string: string
  • match: string
• result: boolean

contains("foobar", "of") 
// false

starts with()

• parameters:
  • input: string
  • match: string
• result: boolean

starts with("foobar", "fo") 
// true

ends with()

• parameters:
  • input: string
  • match: string
• result: boolean

ends with("foobar", "r") 
// true

matches()

• parameters:
  • input: string
  • pattern: string (regular expression)
• result: boolean

matches("foobar", "^fo*bar") 
// true

replace()

• parameters:
  • input: string
  • pattern: string (regular expression)
  • replacement: string (e.g. $1 returns the first match group)
  • (optional) flags: string ("s", "m", "i", "x")
• result: string

replace("abcd", "(ab)|(a)", "[1=$1][2=$2]")
// "[1=ab][2=]cd"

replace("0123456789", "(\d{3})(\d{3})(\d{4})", "($1) $2-$3")
// "(012) 345-6789"

split()

• parameters:
  • string: string
  • delimiter: string (regular expression)
• result: list of strings

split("John Doe", "\s" ) 
// ["John", "Doe"]

split("a;b;c;;", ";")
// ["a", "b", "c", "", ""]