mirror of
https://github.com/MontFerret/ferret.git
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24d8eedd4c
* Added release notes * #509 fixedOCOD typo * Updated values * Updated comments * Changed stdlib docs format * Changed format of array in docs * Use 'any' instead of 'value' in docs * New format for optional params * Updated docs for testing package * Added namespace information
55 lines
1.0 KiB
Go
55 lines
1.0 KiB
Go
package math
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import (
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"context"
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"github.com/MontFerret/ferret/pkg/runtime/core"
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"github.com/MontFerret/ferret/pkg/runtime/values"
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"github.com/MontFerret/ferret/pkg/runtime/values/types"
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)
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// AVERAGE Returns the average (arithmetic mean) of the values in array.
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// @param {Int[] | Float[]} array - Array of numbers.
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// @return {Float} - The average of the values in array.
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func Average(_ context.Context, args ...core.Value) (core.Value, error) {
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err := core.ValidateArgs(args, 1, 1)
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if err != nil {
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return values.None, err
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}
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err = core.ValidateType(args[0], types.Array)
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if err != nil {
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return values.None, err
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}
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arr := args[0].(*values.Array)
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if arr.Length() == 0 {
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return values.None, nil
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}
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var sum float64
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arr.ForEach(func(value core.Value, idx int) bool {
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err = core.ValidateType(value, types.Float, types.Int)
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if err != nil {
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return false
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}
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sum += toFloat(value)
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return true
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})
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if err != nil {
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return values.None, nil
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}
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count := arr.Length()
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return values.Float(sum / float64(count)), nil
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}
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