Replaces a substring of a string with a new string. The start position of the substring must be specified. This function can also be used to add a substring to a string at a given position.
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Syntax |
Description |
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snew = replace(s,pos,len,s1); |
Replaces len characters of s, starting at position pos, with the string in s1. If len is 0, it will insert the string s1 between pos-1 and pos. If len is -1 (or any values less than 0) it will replace all remaining characters in s with s1, starting at pos. The position pos can be 1 to length(s). |
Example
These examples show how to replace substrings in a string or insert a substring at a specific location in a string.
?replace("1234567",3,1,"aa");
12aa4567
?replace("1234567",3,0,"aa"); #insert a string
12aa34567
?replace("1234567",3,-1,"aa");
12aa
See Also
List of commands , length , substring , findstring , replacestring , str2num , num2str , splitstring , lower , upper , toscript