strrep

Find and replace substrings

Since R2021b

Syntax

newStr = strrep(str,old,new)

Description

newStr = strrep(str,old,new) replaces instances of the substring old that occur in the string str with the string new.

Note

The strrep operator is not supported in Stateflow^® charts that use C as the action language.

Examples

Replace Substring

Replace a substring to form the string "Hello, Mars!".

str = "Hello, world!";
newStr = strrep(str,"world","Mars");

Input Arguments

str — Input string

string scalar

Input string, specified as a string scalar. Enclose literal strings with double quotes.

Example: "Hello"

old — Substring to replace

string scalar

Substring to replace, specified as a string scalar. Enclose literal strings with double quotes.

Example: "Hello"

new — New substring

string scalar

New substring, specified as a string scalar. Enclose literal strings with double quotes.

Example: "Hello"

Limitations

• This operator does not support the use of Stateflow structure fields. For more information about structures in Stateflow, see Access Bus Signals Through Stateflow Structures.

Algorithms

The strrep operator replaces overlapping substrings. For example, strrep("abc 2 def 22 ghi 222 jkl 2222","22","*") returns "abc 2 def * ghi ** jkl ***". To replace only sequential substrings, use replace. For more information, see Replace Repeated Pattern.

Version History

Introduced in R2021b