Credence.Pattern.NoIntegerToStringDigits
(credence v0.4.1)
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Performance rule: Detects converting an integer to a string representation
in a given base and then to a charlist, when Integer.digits/2 can extract
the digits directly as a list of integers.
The string conversion creates an intermediate binary and then a charlist, both of which are unnecessary allocations when you just need the digits.
Bad
String.to_charlist(Integer.to_string(number, 2))
Integer.to_string(number, 2) |> String.to_charlist()Good
Integer.digits(number, 2)