strict

README

strict: generic cast functions for conversion to strict types

This package contains generic cast functions enabling providers to convert the values obtained from source databases to the strictly-typed values expected in heterogenous transfers. The main purpose of these functions is to just call the cast, providing a single-line "interface" to do that in concrete providers' type switch statements.

The functions in this package are divided into two categories: Expected and Unexpected. They work the same way in regards to the type / value conversion. They differ in just one way. The Expected functions return errors different from the errors returned by the Unexpected functions when a cast error occurs. The difference depends on the type of the incoming value being casted.

Documentation

Index

• func Expected[ExpectedT any, ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)
• func ExpectedSQL[ExpectedT any, ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)
• func Unexpected[ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)
• func UnexpectedSQL[ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)

Functions

func Expected

func Expected[ExpectedT any, ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)

Expected is a pure wrapper over concrete cast.

func ExpectedSQL

func ExpectedSQL[ExpectedT any, ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)

ExpectedSQL automatically extracts values from `database/sql/driver` Valuer.

func Unexpected

func Unexpected[ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)

Unexpected is a pure wrapper over concrete cast.

func UnexpectedSQL

func UnexpectedSQL[ResultT any](value any, concreteCast func(any) (ResultT, error)) (any, error)

UnexpectedSQL automatically extracts values from `database/sql/driver` Valuer.