Input number 1 determines which bits will be negated in input number 2 ...
Just a note of caution: This phrasing suggests that the order of the operands affects the result of the ^ (bitwise-xor) operator, but it does not. The order is irrelevant:
Win8 Strawberry 5.8.9.5 (32) Sat 05/28/2022 0:35:22
C:\@Work\Perl\monks
>perl
use strict;
use warnings;
printf "%04b \n", 0b1100 ^ 0b0111;
printf "%04b \n", 0b0111 ^ 0b1100;
^Z
1011
1011
And likewise for the | (bitwise-or) and & (bitwise-and) operators.
Update: Slight change to phrasing of first sentence for clarity.
Give a man a fish: <%-{-{-{-<
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