Difference between revisions of "String.sub"
From GiderosMobile
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__NOTOC__ | __NOTOC__ | ||
'''Available since:''' Gideros 2011.6<br/> | '''Available since:''' Gideros 2011.6<br/> | ||
| + | '''Class:''' [[string]]<br/> | ||
| + | |||
=== Description === | === Description === | ||
| − | + | Returns the substring of s that starts at i and continues until j; i and j can be negative. If j is absent, then it is assumed to be equal to -1 (which is the same as the string length). In particular, the call string.sub(s,1,j) returns a prefix of s with length j, and string.sub(s, -i) returns a suffix of s with length i. | |
| − | < | + | <syntaxhighlight lang="lua"> |
(string) = string.sub(s,i,j) | (string) = string.sub(s,i,j) | ||
| − | </ | + | </syntaxhighlight> |
| + | |||
=== Parameters === | === Parameters === | ||
| − | '''s''': (string) | + | '''s''': (string) string to get substring from<br/> |
| − | '''i''': (number) | + | '''i''': (number) start index of substring<br/> |
| − | '''j''': (number) | + | '''j''': (number) index of the last character of substring '''optional'''<br/> |
| + | |||
=== Return values === | === Return values === | ||
| − | '''Returns''' (string) < | + | '''Returns''' (string) substring<br/> |
| + | |||
| + | === Example === | ||
| + | <syntaxhighlight lang="lua"> | ||
| + | local mynme = "nme01" | ||
| + | print(string.sub(mynme, 1, 3)) -- nme | ||
| + | -- or this | ||
| + | print(mynme:sub(1, 3)) -- nme | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | {{String}} | ||
Latest revision as of 15:33, 13 July 2023
Available since: Gideros 2011.6
Class: string
Description
Returns the substring of s that starts at i and continues until j; i and j can be negative. If j is absent, then it is assumed to be equal to -1 (which is the same as the string length). In particular, the call string.sub(s,1,j) returns a prefix of s with length j, and string.sub(s, -i) returns a suffix of s with length i.
(string) = string.sub(s,i,j)
Parameters
s: (string) string to get substring from
i: (number) start index of substring
j: (number) index of the last character of substring optional
Return values
Returns (string) substring
Example
local mynme = "nme01"
print(string.sub(mynme, 1, 3)) -- nme
-- or this
print(mynme:sub(1, 3)) -- nme
