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What is the most efficient way to concatenate two positive integers in Mathematica 7?
cc[123, 4567] >> 1234567
What about more than two?
cc[123, 4, 567, 89] >> 123456789
This will be slightly faster for many integers, than your last solution:
A more concise alternative is to accept a single argument, assuming it to be a list, rather than a sequence, of numbers to concatenate:
which is based on
IntegerStringbeingListable.