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testingerlangsubstringbitstringelixir

Elixir - find sub-bitstring within larger bitstring

How would I go about finding if a sub-bitstring is present with another bitstring in Elixir? I need to verify that bitstring X exists somewhere within bitstring Y for testing purposes. Is there a simple way to do this with existing functions? 

x = "bar"
y = "foo bar baz"
some_substring_function(x, y)

with some_substring_function returning a truthy value.

Thanks in advance!

Solution

  • You can use the =~ operator:

    iex> "hello world" =~ "hello"
true

    The String module also has some convenience functions.