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# core::fmt::Debug

A trait for debug formatting, using the empty format (`{:?}`).

## Signature

```rust theme={null}
pub trait Debug
```

## Examples

```rust theme={null}
let word: ByteArray = "123";
println!("{:?}", word);
```

## Trait functions

### fmt

#### Signature

```rust theme={null}
fn fmt(self: @T, ref f: Formatter) -> Result
```