Data Types

Yona is dynamically typed language, meaning that types are checked during runtime. Values in Yona are represented using following data types:

• boolean - true or false
• integer - 64 bit number
• double - double-precision 64-bit IEEE 754 floating point, written either using a floating point number or by an integer with an f suffix
• byte - single byte, written as an integer literal with a b suffix
• identifier: small letter followed by any number of letters or numbers or underscores
• character - a single UTF-8 character in single quotes: 'c'
• string - UTF-8 characters in quotes: "hello world". String is technically a sequence of characters (highly optimized internally, but for a programmer it looks and feels as a sequence).
• symbols - preceded by a colon: :error
• tuple - in parenthesis: (1, 2, 3)
• sequence - biderctional list like structure with constant time random access in brackets: [1, 2, 3]
• dictionary - in curly braces: {:one = 1, :two = 2}
• set - in curly braces: {1, 2, 3}
• anonymous function(lambda): \first_arg second_arg -> first_arg + second_arg
• unit, or () - representing no value
• native object: underlying Java object that is used by some stdlib functions, such as File descriptor
• stm - software transactional memory
• var - reference to entry in the software transactional memory

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