Elixir - find sub-bitstring within larger bitstring

问题

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!

回答1:

You can use the =~ operator:

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

The String module also has some convenience functions.

来源：https://stackoverflow.com/questions/19636547/elixir-find-sub-bitstring-within-larger-bitstring