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Allow underscores in numeric literals for improved readability? #4108

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scottjmaddox opened this issue Jan 8, 2020 · 1 comment
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Allow underscores in numeric literals for improved readability? #4108

scottjmaddox opened this issue Jan 8, 2020 · 1 comment
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proposal This issue suggests modifications. If it also has the "accepted" label then it is planned.

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@scottjmaddox
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In Rust, underscores can be inserted in numeric literals to improve readability, e.g. 1_000 is the same as 1000, and 0.000_001 is the same as 0.000001. This can be especially helpful for large binary and hex literals, e.g. 0b0101000100001001 vs. 0b0101_0001_0000_1001.

Supporting this would be a pretty minor change to the grammar and lexer, and would be backwards compatible (i.e. it would not break currently working code).
@daurnimator
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daurnimator commented Jan 8, 2020 •
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Duplicate of #504, #3983

@daurnimator daurnimator marked this as a duplicate of #3983 Jan 8, 2020
@daurnimator daurnimator added duplicate proposal This issue suggests modifications. If it also has the "accepted" label then it is planned. labels Jan 8, 2020
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