Std.Log.field
1 declaration
fn
field: &Std.Log.Logger -> Std.Log.Level -> Str -> Str -> Str -> Result[(), Str]This is a callable function.
What it does
Write a line carrying one further field, without keeping it on the logger.
For the field that belongs to one line rather than to everything after it,
which is most of them.
Read the signature
- The text after the name is the type checked by Pudu.
- Read arrows from left to right: inputs come first, and the final type is returned.
- & borrows a value for this call instead of moving or copying it.
- Names inside [ ] are type arguments, such as the item type held by a collection.
- Result makes success and recoverable failure part of the function's type.