13 lines
266 B
Swift
13 lines
266 B
Swift
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import Foundation
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extension Sequence {
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func count(where isIncluded: (Element) -> Bool) -> Int {
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reduce(0) { isIncluded($1) ? $0 + 1 : $0 }
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}
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func sum(converting: (Element) -> Int) -> Int {
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reduce(0) { $0 + converting($1) }
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}
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}
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