On Thursday, 12 April 2018 at 15:47:14 UTC, Uknown wrote:
On Thursday, 12 April 2018 at 15:38:34 UTC, Chris Katko wrote:
I googled but couldn't find any clear solution.
I've got a 2-D array of strings read from a text file I
parsed. So it's like
0 1 15 0 0
2 12 1 0 0
...
0 1 0 10 0
They come in with spaces, so I join into an array between
them. But then the last ones have a newline \n on the end,
which explodes the to! type conversion.
If it was a single array, I could simply do:
string [25] test;
test.each((ref n) => n.stripRight());
But how do you do that when it's a 2-D array?
I'm looking not just for this case, but the generate case of
iterating / applying filters to 2-D arrays.
Thanks.
I think something like this would work:
test.each((ref s) => s.each((ref n) => n.stripRight()));
Essentially, get each 1D array from the 2D array, and then
apply the algorithms on that. There's probably a better way
though
But each doesn't return anything, it mutates, right? I think
that's the problem I ran into with my attempt. With your code, I
get an error about void:
string []x = split(file.readln.idup, " ");
x.each((ref s) => s.each((ref n) => n.stripRight()));
extra.d(2493): Error: template std.algorithm.iteration.each
cannot deduce function from argument types !()(string[], void),
candidates are:
/usr/include/dmd/phobos/std/algorithm/iteration.d(864):
std.algorithm.iteration.each(alias pred = "a")
extra.d(2499): Error: template std.algorithm.mutation.stripRight
cannot deduce function from argument types !()(string),
candidates are:
/usr/include/dmd/phobos/std/algorithm/mutation.d(2363):
std.algorithm.mutation.stripRight(Range, E)(Range range, E
element) if (isBidirectionalRange!Range && is(typeof(range.back
== element) : bool))
/usr/include/dmd/phobos/std/algorithm/mutation.d(2375):
std.algorithm.mutation.stripRight(alias pred, Range)(Range range)
if (isBidirectionalRange!Range && is(typeof(pred(range.back)) :
bool))
extra.d(2500): Error: template std.algorithm.mutation.stripRight
cannot deduce function from argument types !()(string),
candidates are:
/usr/include/dmd/phobos/std/algorithm/mutation.d(2363):
std.algorithm.mutation.stripRight(Range, E)(Range range, E
element) if (isBidirectionalRange!Range && is(typeof(range.back
== element) : bool))
/usr/include/dmd/phobos/std/algorithm/mutation.d(2375):
std.algorithm.mutation.stripRight(alias pred, Range)(Range range)
if (isBidirectionalRange!Range && is(typeof(pred(range.back)) :
bool))
