Today I Learned

A Hashrocket project

Elixir Binaries and Bit Strings

Today I learned that in Elixir Binary is a sub type of Bit String with all elements using a multiple of 8 bits.

"a" # => "a"
?a # => 97
<<97>> # => "a"
is_bitstring <<97>> # => true
is_binary <<97>> # => true
is_bitstring <<97::4>> # => true
is_binary <<97::4>> # => false
is_binary <<97::16>> # => true
  • So String is a UTF-8Binary.
  • And Binary is a multiple 8 bitsBit String.
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