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use ..= instead of ... for range pattern matching #1757

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joekyo opened this issue Jan 9, 2019 · 2 comments · Fixed by #1977
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use ..= instead of ... for range pattern matching #1757

joekyo opened this issue Jan 9, 2019 · 2 comments · Fixed by #1977
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@joekyo
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joekyo commented Jan 9, 2019

According to the reference, ... is kept for backwards compatibility.
@joekyo
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joekyo commented Jan 9, 2019

It seems that the reference recommend us to use ..=.
While the book only introduces ..., and ..= only appears in the appendix of the book.

book $ rg -F '..='
src/appendix-02-operators.md
42:| `..=` | `..=expr`, `expr..=expr` | Right-inclusive range literal | |

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joekyo commented Jan 9, 2019 •
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Oh, even the ..= in the appendix is a range literal operator but not range pattern operator.
So the book doesn't mention about ..= as an inclusive range pattern operator at all.

kevinmehall added a commit to kevinmehall/rust-book that referenced this issue Jun 4, 2019
@kevinmehall
Replace deprecated ... range syntax with ..=
158c5eb 
rust-lang/rust#28237 - this is now a warning on Nightly.

Fixes rust-lang#1757
@kevinmehall kevinmehall mentioned this issue Jun 4, 2019
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Replace deprecated ... range syntax with ..= kevinmehall/rust-book
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@carols10cents @joekyo