Unique Values¶

Values from YAML files¶

Unique values can be retrieved from the YAML files by key, if the key references a hard-coded list of values.

Java

Faker faker = new Faker();

// The values returned in the following lines will never be the same.
String firstUniqueInstrument = faker.unique().fetchFromYaml("music.instruments"); // "Flute"
String secondUniqueInstrument = faker.unique().fetchFromYaml("music.instruments"); // "Clarinet"

Note: Unique values are based on key and locale, so it's possible to get the same value if the locale is manually changed or if two different keys contain the same value.

If all possible values have been returned, an exception will be thrown.

Java

Faker faker = new Faker();
String firstUniqueInstrument = faker.unique().fetchFromYaml("music.instruments"); // "Ukelele"
...
String nthUniqueInstrument = faker.unique().fetchFromYaml("music.instruments"); // throws NoSuchElementException

Any non-string values will be converted.

Java

Faker faker = new Faker();
String successCode = faker.unique().fetchFromYaml("sip.response.codes.success")); // "200"