59 lines
1.1 KiB
Plaintext
59 lines
1.1 KiB
Plaintext
import io:*
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adt options {
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option0,
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option1
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}
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adt maybe_int {
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no_int,
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an_int: int
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}
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fun handle_possibility(it: maybe_int) {
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if (it == maybe_int::no_int()) {
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println("no int")
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}
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/*if (it == maybe_int::an_int) {*/
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else {
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print("an int: ")
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println(it.an_int)
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}
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}
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fun give_maybe(give_it: bool): maybe_int {
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if (give_it)
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return maybe_int::an_int(7)
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return maybe_int::no_int()
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}
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fun can_pass(it: options): options {
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return it
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}
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fun main():int {
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var it: options = can_pass(options::option0())
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if (it == options::option0()) {
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println("nope")
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}
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if (it == options::option1()) {
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println("option1")
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}
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var possibility = give_maybe(false)
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handle_possibility(possibility)
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possibility = give_maybe(true)
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handle_possibility(possibility)
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if ( maybe_int::an_int(7) == maybe_int::an_int(7) )
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println("equality true works!")
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else
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println("equality true fails!")
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if ( maybe_int::an_int(7) != maybe_int::an_int(8) )
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println("equality false works!")
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else
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println("equality false fails!")
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return 0
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}
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