Examples of Yield Function uses in GDScript

return_yield.gd

extends Node

func my_yielding_function():
  print("Hello")
  print(yield())
  print("World")

func _ready():
  var v = my_yielding_function()
  v.resume("Awesome")

# **This will print**
#
# Hello
# Awesome
# World

yield_signal.gd

extends Node

func my_timer_function():
  print("Hello")
  yield(get_tree().create_timer(2.0), "timeout")
  print("World")

func _ready():
  my_timer_function()
  print("Awesome")

# **This will print**
#
# Hello
# Awesome
# World