Question

Have a look here
Can Perl method calls be intercepted?

It shows how to rewrite the symbol table for a simple sub. The print command can take a list I believe, so what is the right way to intercept/rewrite it? I wish to get a program to delay printing while maintaining the same signature, and instead push the output into an array, pre-sort it, then regurgitate all the output at the very end.

Answer 1

Intercepting print itself isn’t the way to go — it has a number of operating modes, including writing to a file or socket. Instead, take a look at the select function, which can be used to change the default filehandle which print will write to.

Also, look at the concept of a “tied” IO handle, as used by IO::Capture.