In Go, functions are values. We can do anything with a function that we could do with a value; we can:

• assign a function to a variable or struct field
• pass a function as an argument to another function
• return a function as the result from another function

To declare a variable with a function type, we can write:

1var function func(float64, float64) float64

We’ve declared a variable named function whose type is func(float64, float64) float64

References

• John Arundel, For the Love of Go

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