We define a constant with the const keyword:

1const CategoryAutobiography = "Autobiography"

We can group multiple constants between brackets:

1const (
2    CategoryAutobiography = "Autobiography"
3    CategoryLargePrintRomance = "Large Print Romance"
4    CategoryParticlePhysics = "Particle Physics"
5)

When the set of constants need to be of a certain type, we can specify the type for the first constant, and the rest will infer it automatically:

1type Category int
2
3const (
4
5    CategoryAutobiography Category = 0
6    CategoryLargePrintRomance = 1
7    CategoryParticlePhysics = 2
8)

Numeric constants are high-precision values.

An untyped constant takes the type needed by its context.

References

• John Arundel, For the Love of Go
• https://go.dev/tour/basics/16

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