★ Ultimate Guide to Go Variadic Funcs

What is inside?

• ✪ What is a variadic func?

• ✪ When to use a variadic func?

• ✪ Slices and the Variadic Funcs

  • Using without params
  • How to pass an existing slice?
  • Passed slice’s spooky action at a distance
  • Passing multiple slices on-the-fly
  • Returning the passed slice
  • Expanding operator anti-pattern
  • Using the length of a variadic param

• ✪ Signature of a variadic func

• ✪ Mixing variadic and non-variadics params

  • Accepting variables types of arguments
  • Why does not Printf only accept just one variadic param?
  • Beware the empty interface type
  • Passing a slice to variadic param with an empty-interface

• ✪ Functional programming aspects

  • Using a func’s result slice as a variadic param
  • Variadic options pattern example

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See you next week!