Get Programming with Go

Lesson 14. First-class functions

After reading lesson 14, you’ll be able to

• Assign functions to variables
• Pass functions to functions
• Write functions that create functions

In Go you can assign functions to variables, pass functions to functions, and even write functions that return functions. Functions are first-class—they work in all the places that integers, strings, and other types work.

This lesson explores some potential uses of first-class functions as part of a theoretical Rover Environmental Monitoring Station (REMS) program that reads from (fake) temperature sensors.

Consider this

A recipe for tacos calls for salsa. You can either turn to page 93 of the cookbook to make homemade salsa or open a jar of salsa from the ...