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pub struct Compact;
Expand description

Marker for Format that indicates that the compact log format should be used.

The compact format includes fields from all currently entered spans, after the event’s fields. Span names are listed in order before fields are displayed.

Example Output

:; cargo run --example fmt-compact
    Finished dev [unoptimized + debuginfo] target(s) in 0.08s
     Running `target/debug/examples/fmt-compact`
2022-02-17T19:51:05.809287Z  INFO fmt_compact: preparing to shave yaks number_of_yaks=3
2022-02-17T19:51:05.809367Z  INFO shaving_yaks: fmt_compact::yak_shave: shaving yaks yaks=3
2022-02-17T19:51:05.809414Z TRACE shaving_yaks:shave: fmt_compact::yak_shave: hello! I'm gonna shave a yak excitement="yay!" yaks=3 yak=1
2022-02-17T19:51:05.809443Z TRACE shaving_yaks:shave: fmt_compact::yak_shave: yak shaved successfully yaks=3 yak=1
2022-02-17T19:51:05.809477Z DEBUG shaving_yaks: yak_events: yak=1 shaved=true yaks=3
2022-02-17T19:51:05.809500Z TRACE shaving_yaks: fmt_compact::yak_shave: yaks_shaved=1 yaks=3
2022-02-17T19:51:05.809531Z TRACE shaving_yaks:shave: fmt_compact::yak_shave: hello! I'm gonna shave a yak excitement="yay!" yaks=3 yak=2
2022-02-17T19:51:05.809554Z TRACE shaving_yaks:shave: fmt_compact::yak_shave: yak shaved successfully yaks=3 yak=2
2022-02-17T19:51:05.809581Z DEBUG shaving_yaks: yak_events: yak=2 shaved=true yaks=3
2022-02-17T19:51:05.809606Z TRACE shaving_yaks: fmt_compact::yak_shave: yaks_shaved=2 yaks=3
2022-02-17T19:51:05.809635Z TRACE shaving_yaks:shave: fmt_compact::yak_shave: hello! I'm gonna shave a yak excitement="yay!" yaks=3 yak=3
2022-02-17T19:51:05.809664Z  WARN shaving_yaks:shave: fmt_compact::yak_shave: could not locate yak yaks=3 yak=3
2022-02-17T19:51:05.809693Z DEBUG shaving_yaks: yak_events: yak=3 shaved=false yaks=3
2022-02-17T19:51:05.809717Z ERROR shaving_yaks: fmt_compact::yak_shave: failed to shave yak yak=3 error=missing yak error.sources=[out of space, out of cash] yaks=3
2022-02-17T19:51:05.809743Z TRACE shaving_yaks: fmt_compact::yak_shave: yaks_shaved=2 yaks=3
2022-02-17T19:51:05.809768Z  INFO fmt_compact: yak shaving completed all_yaks_shaved=false

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.