[erlang-questions] Why does Erlang have control structures?
Tue Aug 28 01:32:32 CEST 2012
On 28/08/2012, at 8:56 AM, Jayson Barley wrote:
> I am not sure I understand why we have them.
"if" is indeed a special case of "case",
and "case" is basically an in-lined function call.
And there is a hint: if you are going to inline
a function call, what are you going to inline it
*as*? The possibility must exist in the core
syntax, if nowhere else.
But "try" and "receive" couldn't be anything else.
Without "receive", we'd have to use channels.
> is_greater_than(X, Y) ->
That would never have worked in the Good Old Days,
where X > Y was a guard test and not usable in an
> I know that the control structures are a little bit faster, not much, but I find that the function form is more readable.
You will find it hard to get a consensus on that.
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