Comments (3)
@CallmeNezha, you are right: Predefined
s are Builtin
s that represent the behaviour and rules or Symbols
like True
or Pi
. So, Predefined
objects does not have leaves. Also, there are Expressions
which to not take parameters like ``MemoryInUse[]```. Those are represented by Builtin
s. So, the right sentence would be something like
"Functions which take no parameters are generally subclassed off of the Builtin
class, while Symbols
are subclassed off of the Predefined
class. "
Over the weekend I will try to rewrite this section.
from mathics-development-guide.
I might have gotten this wrong. Suggest how you think this should be worded.
from mathics-development-guide.
@CallmeNezha In branch https://github.com/Mathics3/mathics-development-guide/tree/builtin-vs-predefined I made a pass at addressing the concerns you raise. As I work on the system, I understand more about it. So in that respect I am no different than anyone else, including yourself.
If you can, please look that over to see if this now helps and matches your expectation. @mmatera has the most experience with all of this, so we'll just wait for him to look over before I commit this to the master branch and update the readthedocs material online.
from mathics-development-guide.
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from mathics-development-guide.