mwlon commented on issue #3849:
URL: https://github.com/apache/arrow-rs/issues/3849#issuecomment-1626396588
I was getting errors trying to install recent versions of arrow:
```bash
error[E0432]: unresolved import `num::complex::ComplexFloat`
-->
/Users/martin/.cargo/registry/src/index.crates.io-6f17d22bba15001f/arrow-array-30.0.1/src/arithmetic.rs:21:5
|
21 | use num::complex::ComplexFloat;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ no `ComplexFloat` in `complex`
error[E0599]: no method named `powi` found for struct `f16` in the current
scope
-->
/Users/martin/.cargo/registry/src/index.crates.io-6f17d22bba15001f/arrow-array-30.0.1/src/arithmetic.rs:351:25
|
351 | Ok(self.powi(exp as i32))
| ^^^^ method not found in `f16`
...
380 | native_type_float_op!(f16, f16::ONE, f16::ZERO);
| ----------------------------------------------- in this macro
invocation
|
= help: items from traits can only be used if the trait is in scope
= note: this error originates in the macro `native_type_float_op` (in
Nightly builds, run with -Z macro-backtrace for more info)
help: the following traits are implemented but not in scope; perhaps add a
`use` for one of them:
|
18 + use num::Float;
|
18 + use num::traits::float::FloatCore;
|
18 + use num::traits::real::Real;
|
error[E0599]: no method named `powi` found for struct `f16` in the current
scope
-->
/Users/martin/.cargo/registry/src/index.crates.io-6f17d22bba15001f/arrow-array-30.0.1/src/arithmetic.rs:356:22
|
356 | self.powi(exp as i32)
| ^^^^ method not found in `f16`
...
380 | native_type_float_op!(f16, f16::ONE, f16::ZERO);
| ----------------------------------------------- in this macro
invocation
|
= help: items from traits can only be used if the trait is in scope
= note: this error originates in the macro `native_type_float_op` (in
Nightly builds, run with -Z macro-backtrace for more info)
help: the following traits are implemented but not in scope; perhaps add a
`use` for one of them:
|
18 + use num::Float;
|
18 + use num::traits::float::FloatCore;
|
18 + use num::traits::real::Real;
|
```
It seemed to become problematic between 30 and 35. I was able to fix this
by adding
```
num-complex = "0.4.3"
```
to my Cargo.toml. I've submitted #4482 .
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