Example / quickstart fails to compile

[clemej]

rustup 1.24.3 (ce5817a94 2021-05-31)
rustc 1.58.1 (db9d1b20b 2022-01-20)
cargo 1.58.0 (f01b232bc 2022-01-19)

Two issues: first, cargo build --examples doesn't work because the label in Cargo.toml is [[example]] instead of [[examples]] as it should be. Fixing that manually leads to the following errors:

$ cargo build --examples
warning: unused manifest key: examples
   Compiling neuronika v0.2.0 (/home/john/umbc/git/neuronika)
warning: unused import: `self`
 --> examples/quickstart.rs:4:10
  |
4 |     nn::{self, loss, Learnable, Linear, ModelStatus},
  |          ^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

error[E0277]: the trait bound `NeuralNetwork: serde::de::Deserialize<'_>` is not satisfied
    --> examples/quickstart.rs:56:9
     |
56   |     } = serde_json::from_str(
     |         ^^^^^^^^^^^^^^^^^^^^ the trait `serde::de::Deserialize<'_>` is not implemented for `NeuralNetwork`
     |
note: required by a bound in `serde_json::from_str`
    --> /home/john/.cargo/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.78/src/de.rs:2611:8
     |
2611 |     T: de::Deserialize<'a>,
     |        ^^^^^^^^^^^^^^^^^^^ required by this bound in `serde_json::from_str`

For more information about this error, try `rustc --explain E0277`.
warning: `neuronika` (example "quickstart") generated 1 warning
error: could not compile `neuronika` due to previous error; 1 warning emitted

I'm super excited for this library and it's chance to build portable, cross-platform binaries that can train RNNs, CNNs, and feed-forward networks.

[frjnn]

Hi, thanks for showing interest in the project. As for the latest commit on main (0717d4b), I can run the example with:

cargo run --package neuronika --example quickstart --features serialize

which gives

Loss for epoch 0 : 2.2159102 
Loss for epoch 1 : 2.0667396 
Loss for epoch 2 : 1.5102402 
Loss for epoch 3 : 1.4285513 
Loss for epoch 4 : 1.3589511 

On the other hand, cargo build --examples, gives:

warning: Target filter `examples` specified, but no targets matched. This is a no-op
    Finished dev [unoptimized + debuginfo] target(s) in 0.02s

[clemej]

Huh. I can confirm your way works. Must be my rust/cargo inexperience, so I guess there is no bug here. will close as notabug.