- Check if it is a string
stringp(something)
The function stringp returns 1 if the value
something is a string, otherwise 0.
- Finding the size
sizeof(string) or
strlen(string)
Returns the length (that is, the number of characters) in the
string string.
sizeof("hi ho") gives the result 5.
sizeof("") gives the result 0.
The function strlen is a synonym for sizeof.
- Reversing a string
reverse(string) returns a new string with the
characters in reverse order.
reverse("foo") gives the result "oof".
- Replacing parts in a string
replace(string, old, new) returns a
new string where all occurrences of the string old have been
replaced with the string new:
replace("fooFOOfoo", "foo", "fum") gives the result
"fumFOOfum".
- Converting to lower case
lower_case(string) returns a new string where all
upper-case characters in the string string have been turned to
lower case:
lower_case("A Foo IS!") gives the result
"a foo is!".
- Converting to upper case
upper_case(string) returns a new string where all
lower-case characters in the string string have been turned to
upper case:
upper_case("A Foo IS!") gives the result
"A FOO IS!".
- Capitalizing
String.capitalize(string)
If the first character in the string string is a lower-case
character, it is converted to upper case:
String.capitalize("xyz-Foo")
gives the result
"Xyz-Foo".
- Finding a substring in a string
search(haystack, needle) returns the index
of the start of the first occurrence of the string needle in
the string haystack:
search("sortohum", "orto") gives the result 1.
