Document try!'s error conversion behaviour #36099
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r? @aturon (rust_highfive has picked a reviewer for you, use r? to override) |
| /// it provides. | ||
| /// error if the value of the expression is `Err`. It additionally provides | ||
| /// automatic conversions of errors into other errors using `From`. | ||
| /// Can only be used in functions that return `Result` because of the |
| /// Can only be used in functions that return `Result` because of the | ||
| /// early return of `Err` that it provides. | ||
| /// | ||
| /// `try!` unwraps the given `Result` and, in case of an `Ok` variant, the |
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"unwrap" is an unfortunate choice of words here, since unwrap() is a method, and it doesn't use it
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Fixed all comments. |
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@steveklabnik updated. Made it more concise (hopefully) and direct. |
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I'm into it. Build failure looks spurious. Thanks! @bors: r+ rollup |
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📌 Commit 0f8eb81 has been approved by |
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…teveklabnik Document try!'s error conversion behaviour try!'s documentation currently doesn't document the error conversion behaviour of the macro. This patch extends the documentation. Open questions: * is it worthwhile to have seperate examples with and without wrapping behaviour? It's not immediately obvious that From<T> for T is always defined. Though this is necessary for the macro to work in any case, is this the place to expect that knowledge.
sophiajt
pushed a commit
to sophiajt/rust
that referenced
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Sep 2, 2016
…teveklabnik Document try!'s error conversion behaviour try!'s documentation currently doesn't document the error conversion behaviour of the macro. This patch extends the documentation. Open questions: * is it worthwhile to have seperate examples with and without wrapping behaviour? It's not immediately obvious that From<T> for T is always defined. Though this is necessary for the macro to work in any case, is this the place to expect that knowledge.
sophiajt
pushed a commit
to sophiajt/rust
that referenced
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Sep 2, 2016
…teveklabnik Document try!'s error conversion behaviour try!'s documentation currently doesn't document the error conversion behaviour of the macro. This patch extends the documentation. Open questions: * is it worthwhile to have seperate examples with and without wrapping behaviour? It's not immediately obvious that From<T> for T is always defined. Though this is necessary for the macro to work in any case, is this the place to expect that knowledge.
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try!'s documentation currently doesn't document the error conversion behaviour of the macro. This patch extends the documentation.
Open questions: