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Merge pull request #3085 from apense/patch-10

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Update sets documentation. Fixes #3058
This commit is contained in:
Andreas Rumpf 2015-07-09 19:48:49 +02:00
commit ae0cb7e014
1 changed files with 12 additions and 2 deletions
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14
doc/sets_fragment.txt
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@ -1,6 +1,16 @@
The set type models the mathematical notion of a set. The set's The set type models the mathematical notion of a set. The set's
basetype can only be an ordinal type. The reason is that sets are implemented basetype can only be an ordinal type of a certain size, namely:
as high performance bit vectors. * ``int8``-``int16``
* ``uint8``/``byte``-``uint16``
* ``char``
* ``enum``
or equivalent. The reason is that sets are implemented as high
performance bit vectors. Attempting to declare a set with a larger type will
result in an error:
.. code-block:: nim
var s: set[int64] # Error: set is too large
Sets can be constructed via the set constructor: ``{}`` is the empty set. The Sets can be constructed via the set constructor: ``{}`` is the empty set. The
empty set is type compatible with any concrete set type. The constructor empty set is type compatible with any concrete set type. The constructor