ext

Documentation

Index

• func Choose[T any](expr bool, ift T, iff T) T
• func Coalesce[T comparable](v ...T) T
• func Nonzero[T Zeroer](v ...T) T
• type Zeroer

Functions

func Choose

func Choose[T any](expr bool, ift T, iff T) T

Choose implements the missing ternary (?:) operator. When the provided expression evalutes to true, the first result parameter is returned; otherwise the second.

Choose(len(s) == 1, "true", "false")

func Coalesce

func Coalesce[T comparable](v ...T) T

Coalesce returns the first non-zero value in the provided arguments. If no argument is non-zero, the zero value is returned.

Coalesce("", "", "hello", "") // "hello"
Coalesce(nil, ptr, nil) // ptr

func Nonzero

func Nonzero[T Zeroer](v ...T) T

Nonzero returns the first argument that is not cosidered "zero" by the Zeroer interface. If all the values are zero, the zero value for the type is returned.

Types

type Zeroer

type Zeroer interface {
	IsZero() bool
}

Zeroer is implemented by types that can represent a non-literal zero value