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Don't mention "*" dependency version in guessing game example

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It's a bad practice as far [RFC 1241] is concerned, and introducing it
in early tutorial may as well make it feel legitimate.

[RFC 1241]: https://github.com/rust-lang/rfcs/blob/master/text/1241-no-wildcard-deps.md
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Konrad Borowski 2016-10-30 15:24:13 +01:00 committed by GitHub
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src/doc/book/guessing-game.md
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@ -362,7 +362,6 @@ numbers. A bare number like above is actually shorthand for `^0.3.0`,
meaning "anything compatible with 0.3.0".
If we wanted to use only `0.3.0` exactly, we could say `rand="=0.3.0"`
(note the two equal signs).
And if we wanted to use the latest version we could use `rand="*"`.
We could also use a range of versions.
[Cargo’s documentation][cargodoc] contains more details.