transversal sum
Jack Applegame via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Thu Nov 6 07:53:26 PST 2014
I have rectangular forward range of forward ranges (not arrays):
[
[a11, a12, ... a1N],
[a21, a22, ... a2N],
...
[aM1, aM2, ... aMN]
]
I need lazy forward range:
[
a11 + a21 + ... aM1,
a12 + a22 + ... aM2,
...
a1N + a2N + ... aMN
]
Range of sum elements of every columns;
M, N - runtime values;
Is there a way to do this using only Phobos algorithms and range
functions?
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