Re: [Perl 6]: Small discoveries VII, Flattening

Note the trailing comma.

Which is horribly like some Python I've had to write. I hate it when syntax DWIMs the wrong way.

> python
>>> x = (1)
>>> x
1
>>> x = (1,)
>>> x
(1,)
[download]

So (1) is not a tuple, but (1,) is?

Back to Perl...

Does the number of trailing commas affect anything? E.g., [[["hello"],,,,],,,,]. (Because in Python it's a syntax error!)

-QM
--
Quantum Mechanics: The dreams stuff is made of

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Re^2: [Perl 6]: Small discoveries VII, Flattening by Anonymous Monk on Oct 31, 2017 at 14:22 UTC
So `(1)` is not a tuple, but `(1,)` is? `(1)` is a parenthesized expression, not a tuple. Same with `(1+1)`. This is an unfortunate result of having two different meanings for parens. Does the number of trailing commas affect anything? Consecutive commas are also a syntax error in Perl6.	[reply]
Re^3: [Perl 6]: Small discoveries VII, Flattening by Anonymous Monk on Oct 31, 2017 at 16:51 UTC
Parens don't build lists in Perl6, commas do: `my @a := 1,2; say @a.^name; #List my @b := 1,; say @b.^name; #List` [download] Parens are usually needed because of precedence when embedding the List into another expression. The comma does have another meaning: it's the separator in argument lists.	[reply] [d/l]
Re^4: [Perl 6]: Small discoveries VII, Flattening by Anonymous Monk on Oct 31, 2017 at 17:08 UTC
`> my $x = 1,2; say $x 1 > my $y = (1,2); say $y (1 2)` [download]	[reply] [d/l]