mirror of
https://github.com/rjNemo/underscore
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Ruidy
0bf04c224e
- Add Scan: returns all intermediate accumulator values
- Also known as prefix scan or cumulative fold
- Comprehensive tests including edge cases and different types
- Benchmark included
Example: Scan([]int{1,2,3,4}, 0, +) → [1, 3, 6, 10]
Resolves Issue 15
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude <noreply@anthropic.com>
18 lines
466 B
Go
18 lines
466 B
Go
package underscore
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// Scan is like Reduce but returns all intermediate accumulator values.
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// Also known as prefix scan or cumulative fold.
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//
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// Example: Scan([]int{1,2,3,4}, 0, func(acc, n int) int { return acc + n }) → [1, 3, 6, 10]
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func Scan[T, P any](values []T, acc P, fn func(P, T) P) []P {
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if len(values) == 0 {
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return []P{}
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}
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res := make([]P, 0, len(values))
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for _, v := range values {
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acc = fn(acc, v)
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res = append(res, acc)
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}
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return res
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}
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