در حال ویرایش پودمان:String/توضیحات (بخش)

== pos ==

This function returns a single character from the target string at position pos.

Usage:

: <code><nowiki>{{#invoke:</nowiki>String|pos|''target_string''|''index_value''}}</code>

OR

: <code><nowiki>{{#invoke:</nowiki>String|pos|target= ''target_string'' |pos= ''index_value'' }}</code>

Parameters:

; target
: The string to search
; pos
: The index for the character to return

The first character has an index value of 1.

If one requests a negative value, this function will select a character by counting backwards
from the end of the string.  In other words pos = -1 is the same as asking for the last character.

A requested value of zero, or a value greater than the length of the string returns an error.

Examples:

* <code><nowiki>{{#invoke:String|pos| abcdefghi | 4 }}</nowiki></code> → {{#invoke:String|pos| abcdefghi | 4 }}
* <code><nowiki>{{#invoke:String|pos|target= abcdefghi |pos= 4 }}</nowiki></code> → {{#invoke:String|pos|target= abcdefghi |pos= 4 }}