Forward function declarations in a Bash or a Shell script?

Question

Is there such a thing in bash or at least something similar (work-around) like forward declarations, well known in C / C++, for instance?

Or there is so

Answer 1

When my bash scripts grow too much, I use an include mechanism:

File allMyFunctions:

foo() {
}

bar() {
}

baz() {
}

File main:

#!/bin/bash

. allMyfunctions

foo
bar
baz