vstr
vstr means Template String.
Usage
Demo
// single variable// result:// Hello Alan Turing!
// signle variable with upper filter// result:// Hello ALAN TURING!
// signle variable with uri filter// result:// Hello Alan%20Turing!
// signle variable with upper and uri filter// result:// Hello ALAN%20TURING!
Expression Syntax
$variable|filter1|filter2|...