# Struct core::fmt::DebugStruct 1.2.0[−][src]

    #[must_use = "must eventually call `finish()` on Debug builders"]
    pub struct DebugStruct<'a, 'b: 'a> { /* fields omitted */ }

A struct to help with `fmt::Debug` implementations.

This is useful when you wish to output a formatted struct as a part of your `Debug::fmt` implementation.

This can be constructed by the `Formatter::debug_struct` method.

# Examples

    use std::fmt;

    struct Foo {
        bar: i32,
        baz: String,
    }

    impl fmt::Debug for Foo {
        fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
            fmt.debug_struct("Foo")
               .field("bar", &self.bar)
               .field("baz", &self.baz)
               .finish()
        }
    }

    // prints "Foo { bar: 10, baz: "Hello World" }"
    println!("{:?}", Foo { bar: 10, baz: "Hello World".to_string() });Run

## Methods

###

`impl<'a, 'b: 'a> DebugStruct<'a, 'b>`

[src]

####

`pub fn field(&mut self, name: &str, value: &Debug) -> &mut DebugStruct<'a, 'b>`

[src]

Adds a new field to the generated struct output.

####

`pub fn finish(&mut self) -> Result`

[src]

Finishes output and returns any error encountered.

## Auto Trait Implementations

###

`impl<'a, 'b> !Send for DebugStruct<'a, 'b>`

###

`impl<'a, 'b> !Sync for DebugStruct<'a, 'b>`

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