Commit 07b2282

author

Bob Lee

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Prepped Reduce Funcitonal

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Lines changed: 21 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -4,17 +4,35 @@`
`4`	`4`	`### Functional Programming`
`5`	`5`	`### Reduce`
`6`	`6`
`7`		`- Problem: A closure is too long to pass through a function`
	`7`	`+ Problem: Combine all elements into one`
`8`	`8`
`9`	`9`	`---`
`10`	`10`	`*/`
`11`	`11`
`12`	`12`
	`13`	`+let result = Array(1...10).reduce(0) { 0ドル + 1ドル }`
	`14`	`+print(result)`
	`15`	`+`
	`16`	`+`
	`17`	`+func myReduce(seed: Int, numbers: [Int], operation: (Int, Int) -> Int) {`
	`18`	`+ var current = seed`
	`19`	`+ for number in numbers {`
	`20`	`+ current = operation(current, number)`
	`21`	`+ }`
	`22`	`+ print("The number is \(current)")`
	`23`	`+}`
	`24`	`+`
	`25`	`+myReduce(seed: -100, numbers: Array(1...4), operation: { 0ドル + 1ドル })`
	`26`	`+`
	`27`	`+// seed 없이 보여준다 초반에는`
	`28`	`+`
	`29`	`+`
	`30`	`+`
`13`	`31`	`extension Array {`
`14`		`- func myReduce<T, U>(seed:U, combiner:(U, T) -> U) -> U {`
	`32`	`+ func myReduce<T, U>(seed:U, operation:(U, T) -> U) -> U {`
`15`	`33`	`var current = seed`
`16`	`34`	`for item in self {`
`17`		`- current = combiner(current, item as! T)`
	`35`	`+ current = operation(current, item as! T)`
`18`	`36`	`}`
`19`	`37`	`return current`
`20`	`38`	`}`

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