43 lines
696 B
Go
43 lines
696 B
Go
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package table
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import (
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"fmt"
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"git.tuxpa.in/a/card_id/common/data"
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"lukechampine.com/frand"
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)
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// a table is a collection of results
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type Table struct {
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raw data.Results
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TotalProbability float64
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}
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func New(r data.Results) *Table {
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out := &Table{}
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out.raw = r
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for _, v := range out.raw {
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out.TotalProbability = out.TotalProbability + v.Rate
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}
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return out
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}
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func (t *Table) RandomResult() data.Result {
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selector := frand.Float64() * t.TotalProbability
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sofar := 0.0
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for _, v := range t.raw {
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sofar = sofar + v.Rate
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if sofar >= selector-0.000000001 {
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return v
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}
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}
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return data.Result{
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Name: fmt.Sprintf("please report this bug: %v", selector),
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Rate: selector,
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}
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}
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