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iOS

Posted by Unsubscribed User
Unsubscribed User
903 Points

Swift

What is the difference between a Double & a Float.

Leon Segal
Leon Segal
14,754 Points

Double is more accurate.

You can get errors when doing currency calculations using float.

1 Answer

Stefan Cimander
Stefan Cimander
37,115 Points
Stefan Cimander
Stefan Cimander
37,115 Points

Citing the official Apple Swift Language Guide:

„Swift provides two signed floating-point number types:

  • Double represents a 64-bit floating-point number.
  • Float represents a 32-bit floating-point number.“

Double has a precision of at least 15 decimal digits, whereas the precision of Float can be as little as 6 decimal digits. The appropriate floating-point type to use depends on the nature and range of values you need to work with in your code. In situations where either type would be appropriate, Double is preferred.“