Available in all subroutines.

Returns the length of the string s. For example, std.strlen("Hello world!"); will return 12 (because the string includes whitespaces and punctuation).


if (strlen(req.http.Cookie > 1024)) {
unset req.http.Cookie;

Try it out

std.strlen is used in the following solution recipes, which show real world use cases. Click RUN to provision a Fastly service, execute the code on Fastly, and see how the function behaves.

Compute intersection of two lists

Useful for comparing capabilities with required permissions.

User contributed notes

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