Co-authored-by: Marko <marko@baricevic.me>
Co-authored-by: marbar3778 <marbar3778@yahoo.com>
Co-authored-by: Alex Peters <alpe@users.noreply.github.com>
## Description
The `init` method of the `Rand` struct was called twice: in the constructor and in the `init` function.
Closes: #XXXX
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## Description
Ref: https://github.com/cosmos/cosmos-sdk/issues/15170
Included in: #15515
Required to resolve a discrepancy between the sign mode being implemented in #15170 and the existing legacy one.
When calling tx builder [SetMsgs](4a6a1e3cb8/x/auth/tx/builder.go (L208)) messages are coerced to an any type in [NewAnyWithValue](4a6a1e3cb8/codec/types/any.go (L61)). This marshals a message as proto bytes. If a message has cosmos.Dec typed fields, and they are set to nil, the will be set to 0 during seriazliation in the [Dec.Marshal](88909d6f2b/math/dec.go (L801)) implementation.
This side effect *changes* the output of a JSON marshal before and after the call to Dec.Marshal, as shown below.
```go
rates := &stakingtypes.CommissionRates{}
MarshalJson(rates)
// {"rate":"0","max_rate":"0","max_change_rate":"0"}
MarshalProto(rates)
MarshalJson(rates)
//{"rate":"0.000000000000000000","max_rate":"0.000000000000000000","max_change_rate":"0.000000000000000000"}
```
An integration is test is also committed asserting the (now fixed) behavior above. Its asserts should be changed once a release of math is made and `/tests/go.mod` is updated.
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Optimizes and tests FormatInt by removing inefficient string
concatenation but also making it so much clearer with how one would
express adding thousand separators in natural language. It uses
a combination of strings.Builder whose values can be grown
The performance improvement is stark in every dimension:
```shell
$ benchstat before.txt after3.txt
name old time/op new time/op delta
DecimalValueRendererFormat-8 4.48µs ± 1% 2.11µs ± 2% -52.90% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
DecimalValueRendererFormat-8 3.62kB ± 0% 0.78kB ± 0% -78.59% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
DecimalValueRendererFormat-8 83.0 ± 0% 28.0 ± 0% -66.27% (p=0.000 n=10+10)
```
While here, also simplified zero padding for LegacyNewDecFromStr
simply by using strings.Repeat instead of a convoluted
fmt.Sprintf+strconv.Itoa.
Fixes#14008Fixes#14003
Co-authored-by: Marko <marbar3778@yahoo.com>
## Description
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- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
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