Strings

A string holds text. The type is string, and a literal is inside double quotation marks.

def text "Hello World"

The common operators

def text "Hello World"

def len (strlen text)                  ; 11
def sub (substring text 0 5)           ; "Hello"

def lower (to_lowercase text)          ; "hello world"
def upper (to_uppercase text)          ; "HELLO WORLD"

def idx (indexOf text "World")         ; 6
def hasWorld (contains text "World")   ; true
def starts (startsWith text "Hello")   ; true
def ends (endsWith text "World")       ; true

def replaced (replace text "World" "Ranger")   ; "Hello Ranger"
def parts (strsplit text " ")                  ; ["Hello", "World"]
def trimmed (trim "  hello  ")                 ; "hello"

The operators are in prefix form: the operator is first and the arguments are after it.

Concatenation

The + operator joins two strings. A value of another type needs a conversion first, except in a print statement, where the compiler adds the conversion.

def count 3
print ("count " + count)
def label ("count " + (to_string count))

The index of a character

The index of a character is a code point index. A target language that counts bytes or UTF-16 units gets the operation that gives the same result as the other targets. A program therefore reads the same character at the same index on each target language.

The complete list

The string operators page holds each operator with its signature, its target support and the code that it writes for each target language.