1
0
mirror of https://github.com/MontFerret/ferret.git synced 2024-12-16 11:37:36 +02:00
ferret/pkg/stdlib/math/min.go

57 lines
1.0 KiB
Go
Raw Normal View History

package math
import (
"context"
2018-10-14 19:06:27 +02:00
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
"github.com/MontFerret/ferret/pkg/runtime/values/types"
)
2018-10-14 19:06:27 +02:00
// Min returns the smallest (arithmetic mean) of the values in array.
// @param array (Array) - Array of numbers.
// @returns (Float) - The smallest of the values in array.
func Min(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.None, err
}
err = core.ValidateType(args[0], types.Array)
if err != nil {
return values.None, err
}
arr := args[0].(*values.Array)
if arr.Length() == 0 {
return values.None, nil
}
var min float64
arr.ForEach(func(value core.Value, idx int) bool {
err = core.ValidateType(value, types.Int, types.Float)
if err != nil {
return false
}
fv := toFloat(value)
if min > fv || idx == 0 {
min = fv
}
return true
})
if err != nil {
return values.None, nil
}
return values.NewFloat(min), nil
}