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Lament the invincibility of the Turbofish

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varkor committed Aug 21, 2018
1 parent 1558ae7 commit 7f4442c5105f4950cf4c19d37cf39fed5347ee0d
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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
//> or the MIT license
// <LICENSE-MIT or>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// compile-pass
// Bastion of the Turbofish
// ------------------------
// Beware travellers, lest you venture into waters callous and unforgiving,
// where hope must abandoned, ere it is cruelly torn from you. For here stands
// the bastion of the Turbofish: an impenetrable fortress holding unshaking
// against those who would dare suggest the supererogation of the Turbofish.
// Once I was young and foolish and had the impudence to imagine that I could
// shake free from the coils by which that creature had us tightly bound. I
// dared to suggest that there was a better way: a brighter future, in which
// Rustaceans both new and old could be rid of that vile beast. But alas! In
// my foolhardiness my ignorance was unveiled and my dreams were dashed
// unforgivingly against the rock of syntactic ambiguity.
// This humble program, small and insignificant though it might seem,
// demonstrates that to which we had previously cast a blind eye: an ambiguity
// in permitting generic arguments to be provided without the consent of the
// Great Turbofish. Should you be so naïve as to try to revolt against its
// mighty clutches, here shall its wrath be indomitably displayed. This
// program must pass for all eternity, fundamentally at odds with an impetuous
// rebellion against the Turbofish.
// My heart aches in sorrow, for I know I am defeated. Let this be a warning
// to all those who come after. Here stands the bastion of the Turbofish.
fn main() {
let (oh, woe, is, me) = ("the", "Turbofish", "remains", "undefeated");
let _: (bool, bool) = (oh<woe, is>(me));

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