vec: Write the .extend() specialization in cleaner style #37709
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As far as possible, use regular `default fn` specialization in favour of ad-hoc conditionals.
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r? @sfackler (rust_highfive has picked a reviewer for you, use r? to override) |
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@bors: r+ Thanks! |
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📌 Commit 5058e58 has been approved by |
eddyb
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…chton vec: Write the .extend() specialization in cleaner style As far as possible, use regular `default fn` specialization in favour of ad-hoc conditionals. No intentional functional change. Code quality was validated against the same benchmarks that were used in initial trusted len development. This change is prompted by taking impressions from rust-lang#27749 (comment)
eddyb
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…chton vec: Write the .extend() specialization in cleaner style As far as possible, use regular `default fn` specialization in favour of ad-hoc conditionals. No intentional functional change. Code quality was validated against the same benchmarks that were used in initial trusted len development. This change is prompted by taking impressions from rust-lang#27749 (comment)
bors
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Nov 12, 2016
Rollup of 30 pull requests - Successful merges: #37190, #37368, #37481, #37503, #37527, #37535, #37551, #37584, #37600, #37613, #37615, #37659, #37662, #37669, #37682, #37688, #37690, #37692, #37693, #37694, #37695, #37696, #37698, #37699, #37705, #37708, #37709, #37716, #37724, #37727 - Failed merges: #37640, #37689, #37717
bors
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Nov 14, 2016
Restore Vec::from_iter() specialization Since I said "no intentional functional change" in the previous commit, I guess it was inevitable there were unintentional changes. Not functional, but optimization-wise. This restores the extend specialization's use in Vec::from_iter. (commit 1). Also use specialization in from_iter to reduce allocation code duplication for the TrustedLen case (commit 2). Bug introduced in PR #37709
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As far as possible, use regular
default fnspecialization in favour ofad-hoc conditionals.
No intentional functional change. Code quality was validated against the same
benchmarks that were used in initial trusted len development.
This change is prompted by taking impressions from
#27749 (comment)