prog8/compilerAst/test/helpers/mapCombinations.kt

26 lines
869 B
Kotlin

package prog8tests.ast.helpers
fun <A, B, R> mapCombinations(dim1: Iterable<A>, dim2: Iterable<B>, combine2: (A, B) -> R) =
sequence {
for (a in dim1)
for (b in dim2)
yield(combine2(a, b))
}.toList()
fun <A, B, C, R> mapCombinations(dim1: Iterable<A>, dim2: Iterable<B>, dim3: Iterable<C>, combine3: (A, B, C) -> R) =
sequence {
for (a in dim1)
for (b in dim2)
for (c in dim3)
yield(combine3(a, b, c))
}.toList()
fun <A, B, C, D, R> mapCombinations(dim1: Iterable<A>, dim2: Iterable<B>, dim3: Iterable<C>, dim4: Iterable<D>, combine4: (A, B, C, D) -> R) =
sequence {
for (a in dim1)
for (b in dim2)
for (c in dim3)
for (d in dim4)
yield(combine4(a, b, c, d))
}.toList()