Make multiply(_:_:) even even more elegant

jsbean · jsbean · commit 7513bc03d8df · 2016-11-09T17:48:33.000-05:00
diff --git a/Linear Regression/LinearRegression.playground/Contents.swift b/Linear Regression/LinearRegression.playground/Contents.swift
@@ -34,7 +34,7 @@ func average(_ input: [Double]) -> Double {
 }
 
 func multiply(_ a: [Double], _ b: [Double]) -> [Double] {
-    return zip(a,b).map { $0.0 * $0.1 }
+    return zip(a,b).map(*)
 }
 
 func linearRegression(_ xs: [Double], _ ys: [Double]) -> (Double) -> Double {

Original file line number	Diff line number	Diff line change
`@@ -34,7 +34,7 @@ func average(_ input: [Double]) -> Double {`
`34`	`34`	`}`
`35`	`35`
`36`	`36`	`func multiply(_ a: [Double], _ b: [Double]) -> [Double] {`
`37`		`- return zip(a,b).map { $0.0 * $0.1 }`
	`37`	`+ 4990 return zip(a,b).map(*)`
`38`	`38`	`}`
`39`	`39`
`40`	`40`	`func linearRegression(_ xs: [Double], _ ys: [Double]) -> (Double) -> Double {`