function.sh

# complete examples - autocomplete.sh

print_title(){
	echo "my own title"
}

print_title
echo $(print_title)
# execute function by name
echo `print_title`
echo $("print_title")
function_for_execution=`echo "print_title"`
$function_for_execution

# --------
# function should return Integers only, checking return value via $?
print_invitation(){
	echo "this is invitation for $1"
	# you can return only digits
	return 5
}

print_invitation 'John'
echo $?

# --------
# function can 'return' string
generate_body() {
cat <<EOF
   "string from function"
EOF
}

echo ">>>> $(generate_body)"


# ---------
# function set argument by name
set_argument_by_name(){
	eval "$1='value from function'"
}

set_argument_by_name my_variable
echo $my_variable


# ----------
# function set return value to global variable
set_global_var(){
	return_value="value from function 'set_global_var'"
}
set_global_var
echo $return_value

# ---------
# function alias

function ssh-staging-copy-from(){
	if [[ -z "$1" ]]; then
		echo "mandatory first parameter is empty"
		return 1
	fi
}

function staging-ssh-copy-from(){
        ssh-staging-copy-from $*
}


# ----------
# function array argument
function function_with_array_argument() {
    mvn_modules=""
    for java_module in ${1}
    do
        mvn_modules+=":${java_module},"
    done
    echo "${mvn_modules}"

    changed_files_list=$(echo "${mvn_modules[@]}" | tr '\n' ' ')
    echo "${changed_files_list}"    
}


java_modules=(
    "interval"
    "marker"
    "search"
    "video"
)

result=$(function_with_array_argument "${java_modules[@]}")