19 lines
483 B
JavaScript
Executable file
19 lines
483 B
JavaScript
Executable file
export default function mean(values, valueof) {
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let count = 0;
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let sum = 0;
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if (valueof === undefined) {
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for (let value of values) {
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if (value != null && (value = +value) >= value) {
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++count, sum += value;
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}
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}
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} else {
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let index = -1;
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for (let value of values) {
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if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) {
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++count, sum += value;
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}
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}
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}
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if (count) return sum / count;
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}
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