Crate struct_field_names_as_array

struct-field-names-as-array

Provides the FieldNamesAsArray procedural macro.

The procedural macro adds the FIELD_NAMES_AS_ARRAY constant to the struct. The FIELD_NAMES_AS_ARRAY is an array containing the field names of the struct (as the name suggests). The visibility of the FIELD_NAMES_AS_ARRAY is the same as the corresponding struct.

NOTE: the macro can only be derived by named structs.

Example

use struct_field_names_as_array::FieldNamesAsArray;

#[derive(FieldNamesAsArray)]
struct Foo {
  bar: String,
  baz: String,
  bat: String,
}

assert_eq!(Foo::FIELD_NAMES_AS_ARRAY, ["bar", "baz", "bat"]);

Attributes

The FieldNamesAsArray macro supports the field_names_as_array attribute with the following possible arguments:

• skip: do not add the field to FIELD_NAMES_AS_ARRAY

  Example

  use struct_field_names_as_array::FieldNamesAsArray;
  
  #[derive(FieldNamesAsArray)]
  struct Foo {
    bar: String,
    baz: String,
    #[field_names_as_array(skip)]
    bat: String,
  }
  
  assert_eq!(Foo::FIELD_NAMES_AS_ARRAY, ["bar", "baz"]);

Derive Macros

FieldNamesAsArray