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Module string.lua

String operation extensions

Functions

string.endswith (s, value)	Check if a string ends with a value
string.join (s, other)	Concatenate a list/table of strings with another string as the delimiter
string.replace (s, sub, rep, limit)	Replace occurrences of a substring in a string
string.split (s, delim)	Split a string by a delimiter into a table of strings
string.startswith (s, value)	Check if a string starts with a value
string.strip (s, remove)	Strip characters from the beginning and end of a string

Metatable functions

metafuncs.add (s, other)	Add strings together with + operator
metafuncs.call (s, i, j)	Slice a string into a smaller string.
metafuncs.index (s, i)	Index a single character in a string.
metafuncs.mul (s, other)	Multiply a string to repeat it
metafuncs.pairs (s)	Iterate over the characters in a string

Functions

string.endswith (s, value)

Check if a string ends with a value

Parameters:

• s string
• value string

Returns:

boolean

string.join (s, other)

Concatenate a list/table of strings with another string as the delimiter

Parameters:

• s string
• other

Returns:

string

string.replace (s, sub, rep, limit)

Replace occurrences of a substring in a string

Parameters:

• s string
• sub string
• rep
• limit int

Returns:

string

string.split (s, delim)

Split a string by a delimiter into a table of strings

Parameters:

• s string
• delim string

Returns:

list

string.startswith (s, value)

Check if a string starts with a value

Parameters:

• s string
• value string

Returns:

boolean

string.strip (s, remove)

Strip characters from the beginning and end of a string

Parameters:

• s string
• remove string

Returns:

string

Metatable functions

metafuncs.add (s, other)

Add strings together with + operator

Parameters:

• s string a thing
• other string athing

Usage:

"abc" + "cde" => "abccde"

metafuncs.call (s, i, j)

Slice a string into a smaller string. (see http://lua-users.org/wiki/StringIndexing)

Parameters:

• s
• i
• j

Usage:

x = 'abcde'
x(2, 4) => 'bcd'
x{1, -2, 3} => 'adc'

metafuncs.index (s, i)

Index a single character in a string. (see http://lua-users.org/wiki/StringIndexing)

Parameters:

• s
• i

Usage:

x = 'abcde'
x[3] == x[-3] == 'c'
x.<command> == function or nil

metafuncs.mul (s, other)

Multiply a string to repeat it

Parameters:

• s
• other

Usage:

"ab" * 3 => "ababab"

metafuncs.pairs (s)

Iterate over the characters in a string

Parameters:

• s

Usage:

x = 'ab'
for i, v in pairs(x) do print(i, v) end
prints ->
    1, a
    2, b