Re: t[] = 'syntactic sugar'
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- Subject: Re: t[] = 'syntactic sugar'
- From: Patrick Rapin <toupie300@...>
- Date: 2012年1月19日 11:24:32 +0100
That would be handy, especially when the table name is not just "t",
but a complex expression like "my_object.get_table()".
However I don't really like the syntax, which looks incomplete.
It could be better expressed as :
t[end] = 'syntactic sugar'
Because "end" is a keyword, there is no ambiguity in the grammar, and
the intention is more clear.
In MATLAB, "end" can be used in a similar but more general way. It
represent the current length in the current dimension.
Examples in this language :
a = [11 12 13; 21 22 23]
a =
11 12 13
21 22 23
a(end)
ans = 23
a(end, end-1)
ans = 22
a(end+1,end)=33
a =
11 12 13
21 22 23
0 0 33
If we like that feature and want it in Lua also, the syntactic sugar
would become a bit longer :
t[end+1] = 'syntactic sugar'
for appending, but now allows for example
print( t[end] )
to display the last argument, or
t[end], t[end-1] = t[end-1], t[end]
to swap the last two values.