Created
October 1, 2013 19:15
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How to define a type as a rebranded native type. Downside: lots of casting. Good or bad?
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| type SimpleEWMA float64 | |
| // Value returns the current value of the moving average. | |
| func (e *SimpleEWMA) Value() float64 { | |
| return float64(*e) | |
| } | |
| // Add adds a value to the series and updates the moving average. | |
| func (e *SimpleEWMA) Add(value float64) { | |
| if *e == 0 { // this is a proxy for "uninitialized" | |
| *e = SimpleEWMA(value) | |
| } else { | |
| *e = (SimpleEWMA(value) * SimpleEWMA(DECAY)) + (*e * (1 - SimpleEWMA(DECAY))) | |
| } | |
| } |
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Could you use
*e = SimpleEWMA(value * DECAY) + (*e * (1 - DECAY))