Scala FAQ: What are the Scala data types? How many bits do they use to store their data, and what is the range of those data types?
Courtesy of the excellent book, Programming in Scala, here is a list and description of the Scala data types, including bit sizes and data ranges:
Data Type Definition Boolean true or false Byte 8-bit signed two's complement integer (-2^7 to 2^7-1, inclusive) Short 16-bit signed two's complement integer (-2^15 to 2^15-1, inclusive) Int 32-bit two's complement integer (-2^31 to 2^31-1, inclusive) Long 64-bit two's complement integer (-2^63 to 2^63-1, inclusive) Float 32-bit IEEE 754 single-precision float Double 64-bit IEEE 754 double-precision float Char 16-bit unsigned Unicode character (0 to 2^16-1, inclusive) String a sequence of Chars
The String class resides in the package
java.lang, and all these other types are in the package
You may have noticed that these data types in Scala have the exact same range as the corresponding data types in Java. This makes it easy to convert these Scala types to their corresponding Java primitive types.
Also interesting to note, if you're into specifics: Collectively, Byte, Short, Int, Long, and Char are called integral types. The integral types plus Float and Double are called numeric types. (That was again courtesy of the book, Programming in Scala.)
Here are links to the official Scala docs for these data types:
And here's a link to the Programming in Scala book on Amazon: