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TRPL: make version constraits explicit

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We weren't explicit enough about Cargo's default version behavior.

For rust-lang/rust at least,

Fixes #26482
This commit is contained in:
Steve Klabnik 2015-07-08 13:09:22 -04:00
parent 50df2a09b8
commit 1ae7702681
1 changed files with 5 additions and 3 deletions
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8
src/doc/trpl/guessing-game.md
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@ -360,10 +360,12 @@ rand="0.3.0"
The `[dependencies]` section of `Cargo.toml` is like the `[package]` section:
everything that follows it is part of it, until the next section starts.
Cargo uses the dependencies section to know what dependencies on external
crates you have, and what versions you require. In this case, we’ve used version `0.3.0`.
crates you have, and what versions you require. In this case, we’ve specified version `0.3.0`,
which Cargo understands to be any release that’s compatible with this specific version.
Cargo understands [Semantic Versioning][semver], which is a standard for writing version
numbers. If we wanted to use the latest version we could use `*` or we could use a range
of versions. [Cargo’s documentation][cargodoc] contains more details.
numbers. If we wanted to use only `0.3.0` exactly, we could use `=0.3.0`. If we
wanted to use the latest version we could use `*`; We could use a range of
versions. [Cargo’s documentation][cargodoc] contains more details.
[semver]: http://semver.org
[cargodoc]: http://doc.crates.io/crates-io.html