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perf: Speedup coins.Sort() when coins is of length 1 #18875

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Dec 23, 2023
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perf: Speedup coins.Sort() when coins is of length 1 #18875

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perf: Speedup coins.Sort() when coins is of length 1
ValarDragon Dec 22, 2023
9325098
Update CHANGELOG.md
ValarDragon Dec 22, 2023
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -54,6 +54,7 @@ Ref: https://keepachangelog.com/en/1.0.0/

### Improvements

* (types) [#18875](https://github.com/cosmos/cosmos-sdk/pull/18875) Speedup coins.Sort() if len(coins) <= 1
* (client/keys) [#18745](https://github.com/cosmos/cosmos-sdk/pull/18745) Improve `<appd> keys export` and `<appd> keys mnemonic` by adding --yes option to skip interactive confirmation.
* (client/keys) [#18743](https://github.com/cosmos/cosmos-sdk/pull/18743) Improve `<appd> keys add -i` by hiding inputting of bip39 passphrase.
* (client/keys) [#18703](https://github.com/cosmos/cosmos-sdk/pull/18703) Improve `<appd> keys add` and `<appd> keys show` by checking whether there are duplicate keys in the multisig case.
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7 changes: 6 additions & 1 deletion types/coin.go
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Expand Up @@ -823,7 +823,12 @@ var _ sort.Interface = Coins{}

// Sort is a helper function to sort the set of coins in-place
func (coins Coins) Sort() Coins {
sort.Sort(coins)
// sort.Sort(coins) does a costly runtime copy as part of `runtime.convTSlice`
// So we avoid this heap allocation if len(coins) <= 1. In the future, we should hopefully find
// a strategy to always avoid this.
if len(coins) > 1 {
sort.Sort(coins)
}
return coins
}

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