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api.go
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api.go
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// Package get provides conditional expression builders
package get
import "github.com/m4gshm/gollections/expr/use"
// If builds a head of getter function call by condition.
// Looks like val := get.If(condition, getterFuncOnTrue).Else(defaltVal) tha can be rewrited by:
//
// var val type
// if condtion {
// val = getterFuncOnTrue()
// } else {
// val = defaltVal
// }
func If[T any](condition bool, then func() T) use.When[T] {
return use.IfGet(condition, then)
}
// IfErr is like If but aimed to use an error return function
func IfErr[T any](condition bool, then func() (T, error)) use.WhenErr[T] {
return use.IfGetErr(condition, then)
}
// If_ is alias of IfErr
func If_[T any](condition bool, tru func() (T, error)) use.WhenErr[T] {
return IfErr(condition, tru)
}