nhpip
Underscored variables - which do you prefer, descriptive or not?
So I came from the Erlang world. Recently I got into a debate at work about underscored variables.
Half of us (including me) do:
def foo([], _byte_count, _file_count, acc), do: acc
def foo([node | tail], byte_count, acc) do
# Some code
def bar(%{something: var} = _state) do
# Some code
The other half does:
def foo([], _, _, acc), do: acc
def foo([node | tail], byte_count, acc) do
# Some code
def bar(%{something: var})do
# Some code
What’s the preference?
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rvirding
The only thing to be aware of the that the _var are just normal variables so if you use the same one in the function head then you are saying that they must be equal. You can in fact use them as normal variables. Note the compiler will warn you when you do this but be careful.
The _ variable is the only special variable as it always matches and is never bound.
cmo
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ericdude4
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