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Tutorial 1: Simplifiy the discription of enums; it is a tutorial, not a manual

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Araq 2018-08-30 23:48:16 +02:00
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@ -1112,21 +1112,12 @@ proc can convert it to its underlying integer value.
For better interfacing to other programming languages, the symbols of enum For better interfacing to other programming languages, the symbols of enum
types can be assigned an explicit ordinal value. However, the ordinal values types can be assigned an explicit ordinal value. However, the ordinal values
must be in ascending order. A symbol whose ordinal value is not must be in ascending order.
explicitly given is assigned the value of the previous symbol + 1.
An explicit ordered enum can have *holes*:
.. code-block:: nim
:test: "nim c $1"
type
MyEnum = enum
a = 2, b = 4, c = 89
Ordinal types Ordinal types
------------- -------------
Enumerations without holes, integer types, ``char`` and ``bool`` (and Enumerations, integer types, ``char`` and ``bool`` (and
subranges) are called ordinal types. Ordinal types have quite subranges) are called ordinal types. Ordinal types have quite
a few special operations: a few special operations: