v6d | vineyard : an in-memory immutable data manager | Analytics library
kandi X-RAY | v6d Summary
kandi X-RAY | v6d Summary
vineyard (v6d): an in-memory immutable data manager. (Project under CNCF)
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QUESTION
I'm trying to write a token that allows nested content with matching delimiters. Where (AB) should result in a match to at least "AB" if not "(AB)". And (A(c)B) would return two matches "(A(c)B)" and so on.
Code boiled down from its source:
...ANSWER
Answered 2020-Jan-17 at 05:19There are a few added complexities that you have. For instance, you define a tie
as being either (...)
or just the ...
. But that inner contents is identical to the line.
Here's a rewritten grammar that greatly simplifies what you want. When writing grammars, it's helpful to start from the small and go up.
QUESTION
In the process of writing a translator of one music language to another (ABC to Alda) as an excuse to learn Raku DSL-ability, I noticed that there doesn't seem to be a way to terminate a .parse
! Here is my shortened demo code:
ANSWER
Answered 2019-Dec-26 at 03:57When you use the grammar debugger, it lets you see exactly how the engine is parsing the string — fails are normal and expected. Considered, for example, matching a+b*
with the string aab
. You should get two matches for 'a', followed by a fail (because b
is not a
) but then it will retry with b
and successfully match.
This might be more easily seen if you do an alternation with ||
(which enforces order). If you have
QUESTION
Using the following code:
...ANSWER
Answered 2019-Dec-08 at 21:18D:\>6e "say <5 0 10>"
(5 0 10)
QUESTION
I chose to redesign a portion of the previous code of mine, in this case, a chessboard, in Perl 6. The first two classes went well (or at least worked, I know so little that I can't speak to their correctness), but I'm stuck with the third. Here is the code:
...ANSWER
Answered 2019-Nov-18 at 23:40Inheriting from Array
is probably not the best design choice here; it reveals and commits to the underlying representation of the Board
, which will present refactoring challenges as the code evolves. Rather, I'd suggest that a Board
has an Array
of Square
, which is initialized with Square
objects.
Assuming the board is meant to have $size
squared places, then you could do something like:
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