Supported creating varargs of reified type parameter
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committed by
Andrey Breslav
parent
29b4ba9b3d
commit
a8ca39754c
@@ -0,0 +1,15 @@
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import kotlin.test.assertEquals
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inline fun <reified T> copy(c: Collection<T>): Array<T> {
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return c.copyToArray()
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}
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fun box(): String {
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val a: Array<String> = copy(listOf("a", "b", "c"))
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assertEquals("abc", a.join(""))
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val b: Array<Int> = copy(listOf(1,2,3))
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assertEquals("123", b.map { it.toString() }.join(""))
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return "OK"
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}
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@@ -0,0 +1,24 @@
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import kotlin.test.assertEquals
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fun <T> foo(vararg a: T) = a.size
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inline fun <reified T> bar(a: Array<T>, block: () -> T): Array<T> {
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assertEquals(4, foo(*a, block(), block()))
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return array(*a, block(), block())
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}
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inline fun <reified T> empty() = array<T>()
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fun box(): String {
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var i = 0
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val a: Array<String> = bar(array("1", "2")) { i++; i.toString() }
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assertEquals("1234", a.join(""))
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i = 0
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val b: Array<Int> = bar(array(0, 1)) { i++ }
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assertEquals("0123", b.map { it.toString() }.join(""))
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return "OK"
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}
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@@ -0,0 +1,26 @@
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import kotlin.test.assertEquals
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fun <T> foo(vararg a: T) = a.size
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inline fun <reified T> bar(block: () -> T): Array<T> {
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assertEquals(2, foo(block(), block()))
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return array(block(), block(), block())
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}
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inline fun <reified T> empty() = array<T>()
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fun box(): String {
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var i = 0
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val a: Array<String> = bar() { i++; i.toString() }
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assertEquals("345", a.join(""))
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i = 0
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val b: Array<Int> = bar() { i++ }
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assertEquals("234", b.map { it.toString() }.join(""))
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val c: Array<String> = empty()
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assertEquals(0, c.size)
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return "OK"
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}
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