Struct StringOps 

pub struct StringOps;

Operations on string objects.

Implementations

impl StringOps

pub fn byte_len(obj: &RtObject) -> Option<usize>

Get the length of a string in bytes.

pub fn char_len(obj: &RtObject) -> Option<usize>

Get the length of a string in characters.

pub fn as_str(obj: &RtObject) -> Option<String>

Get the string value.

pub fn concat(a: &RtObject, b: &RtObject) -> Option<RtObject>

Concatenate two strings.

pub fn char_at(obj: &RtObject, index: usize) -> Option<RtObject>

Get a character at an index.

pub fn substring(obj: &RtObject, start: usize, len: usize) -> Option<RtObject>

Take a substring.

pub fn to_char_list(obj: &RtObject) -> Option<Vec<RtObject>>

Convert a string to a list of characters.

pub fn nat_to_string(n: &RtObject) -> Option<RtObject>

Convert a natural number to its string representation.

pub fn push_char(s: &RtObject, c: &RtObject) -> Option<RtObject>

Append a character to a string.