fc6b7c8b38
Long lines were fixed in a very crude way, as I'll be following up with another reformat in a bit.
48 lines
1.1 KiB
Rust
48 lines
1.1 KiB
Rust
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import option;
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import option::some;
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import option::none;
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tag t<T, U> { left(T); right(U); }
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fn either<T, U,
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V>(f_left: block(T) -> V, f_right: block(U) -> V, value: t<T, U>) ->
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V {
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alt value { left(l) { f_left(l) } right(r) { f_right(r) } }
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}
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fn lefts<T, U>(eithers: [t<T, U>]) -> [T] {
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let result: [T] = [];
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for elt: t<T, U> in eithers {
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alt elt { left(l) { result += [l] } _ {/* fallthrough */ } }
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}
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ret result;
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}
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fn rights<T, U>(eithers: [t<T, U>]) -> [U] {
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let result: [U] = [];
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for elt: t<T, U> in eithers {
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alt elt { right(r) { result += [r] } _ {/* fallthrough */ } }
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}
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ret result;
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}
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fn partition<T, U>(eithers: [t<T, U>]) -> {lefts: [T], rights: [U]} {
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let lefts: [T] = [];
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let rights: [U] = [];
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for elt: t<T, U> in eithers {
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alt elt { left(l) { lefts += [l] } right(r) { rights += [r] } }
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}
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ret {lefts: lefts, rights: rights};
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}
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//
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// Local Variables:
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// mode: rust
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
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// End:
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//
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