问题
C++11 introduced a function called iota. Which "Assigns to every element in the range [first,last) successive values of val, as if incremented with ++val after each element is written."
Can someone explain what "iota" means here though?
I looked up "iota" and it seems to have nothing to do with generating a range.
回答1:
Quoting this non-authoritative, but nonetheless correct, wiki:
The function is named after the integer function
⍳from the programming language APL.
In APL, the ⍳ function (represented with the ninth letter of the Greek alphabet, iota) is used to create a zero-based array of consecutive, ascending integers of a specified length.
回答2:
It's a Greek letter used in mathematics to denote a set of consecutive numbers. Iota use in APL.
回答3:
This page has a very plausible-seeming explanation:
The Greek letter iota is used in the programming language APL to generate a sequence of consecutive integers.
来源：https://stackoverflow.com/questions/28411850/why-is-it-called-iota