Syntax

Arguments and performed function

x = strlength(s);

x is a $1\times 1$ matrix that stores the number of characters in string s. Note that escape characters are treated as separate entries. For example, the string "∖"my string∖"" contains 13 characters, with each "∖"" occupying two places in the string.

• s must be a string

s = strcat(s1, s2 $[$, s3, s4,...$]$);

s is a string that is constructed by concatenating the strings that are passed as arguments to strcat().

• s1, s2, s3, s4, $\dots$ must all be strings

s = substr(r, l:u);

s is a string that is constructed by extrancting the characters in r located from position l to u (margins included). Note that escape characters in s occupy two places in a string.

• r must be a string
• u and l must be positive integers with l $\le$ u

strreplace(s, r, t);
strreplace(s, r, l:u);

The strreplace() function in the first form replaces all occurrences in string s of the characters in string r with the characters in string t. For example, the statement strreplace(s, "∖∖", "/"); replaces all backslashes in s with forward slashes.
In the second form the function replaces the characters in string s from position l to u (margins included) with the characters in string r.

• s, r and t must all be strings
• u and l must be positive integers with l $\le$ u

x = strfind(s, r);

x is a $1\times 1$ matrix that stores the location in string s at which the first match occurs between the characters in s and r. For example, if s is "Hello World" and r is "World", then x will be equal to seven.
strfind() returns 0 if s does not contain r.

• s must be a string
• r must be a string

x = strfindr(s, r);

x is a $1\times 1$ matrix that stores the location in string s at which the last match occurs between the characters in s and r. For example, if s is "Hello World" and r is "World", then x will be equal to seven.
strfind() returns 0 if s does not contain r.

• s must be a string
• r must be a string

strcmp(s, r)

The strcmp() function compares strings s and r and evaluates to true if the two strings match exactly and false otherwise.
Note that the code provided in the left is not a complete statement. strcmp(s, r) would typically be the condition in an if-else or a while statement.

• s must be a string
• r must be a string

s = mat2str(A $[$, p$]$);

The mat2str() function produces a string s from the contents of a $1\times 1$ matrix A, using up to p digits. If p is not provided then s will contain the value of A as it appears on the BayES console after a print(A); statement.

• A must be a $1\times 1$ matrix
• p must be a positive integer