Created
May 31, 2016 01:05
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Scala Currying Examples
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| def product(func: Int => Int)(a: Int, b: Int): Int = { | |
| if (a > b) | |
| 1 | |
| else | |
| func(a) * product(func)(a + 1, b) | |
| } | |
| product((x) => (x + x))(1, 3) | |
| def fact(a: Int): Int = { | |
| product((a) => (a))(1, a) | |
| } | |
| fact(5) | |
| def mapReduce(func: Int => Int, combine: (Int, Int) => Int, baseValue: Int)(a: Int, b: Int): Int = { | |
| if (a > b) baseValue | |
| else combine(func(a), mapReduce(func, combine, baseValue)(a + 1, b)) | |
| } | |
| def productMR(func: Int => Int)(a: Int, b: Int): Int = mapReduce(func, (x, y) => x * y, 1)(a, b) | |
| def sumMR(func: Int => Int)(a: Int, b: Int): Int = mapReduce(func, (x, y) => x + y, 0)(a, b) | |
| productMR((x) => (x + x))(1, 3) | |
| sumMR((x) => (x))(1, 3) |
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