emulate -L zsh
setopt local_options extended_glob
	set all/selected options to be local within a function.

$0
	The name of the script itself.
$1, $2, ..., $9, ${10}, ...
	Positional parameters (in functions).
$#
ARGC
	The number of parameters.
$*
	All the parameters separated by space (see ${arr[*]}).
$@
argv
	All the parameters in the array (see ${arr[&]}).
5=val
	Assign "val" to $5.

FUNCNAME
funcstack, provided by zsh/parameter module
	Array, containing the names of all the functions in the current call stack.


Ex loop through the options:

for par; do
	case $par in
		(-a) aopt = 1;;
		(-b) bopt = 2;;
		(*)  arg  = $par;;
	esac
done

while [[ $1 = -* ]]; do
	case $1 in
		(-a) aopt=1;;
		(-b) bopt=1;;
		(-c)
			carg=$2
			shift
			;;
	esac
	shift
done

See also: getopts, zparseopts.


Autoloading functions:

autoload -- ~/.zfunc/[^_]*(:t)
	Omit files starting from underscore since compinit will autoload them.
	The (:t) modifier removes any dir-portion from the expression.