On Mon, Oct 8, 2012 at 5:06 PM, Brian Craft wrote:
> Thanks!
>
> Is the string vs symbol distinction peculiar to clojure, among lisps?
>
Yes, strings are distinct from symbols in every reputable lisp.
That symbol and keyword know how to look themselves up in an
associative collection is, as far
Thanks!
Is the string vs symbol distinction peculiar to clojure, among lisps?
On Monday, October 8, 2012 8:03:00 AM UTC-7, Jack Moffitt wrote:
>
> > user=> ('X 'Y)
> > nil
> >
> > All of these are as I expected except the last, which I thought would
> throw
> > something like the 1st case. W
> user=> ('X 'Y)
> nil
>
> All of these are as I expected except the last, which I thought would throw
> something like the 1st case. What's going on there?
You've prevented X from being evaluated (it will be seen as the symbol
X), but you haven't prevented evaluation of the function call. Symbols
symbol, 'X in the last case, implements IFn, and you're calling it
with the symbol 'Y as an argument.
On Mon, Oct 8, 2012 at 9:43 AM, Brian Craft wrote:
> user=> ("X" "Y")
> ClassCastException java.lang.String cannot be cast to clojure.lang.IFn
> user/eval116 (NO_SOURCE_FILE:32)
> user=> '(X Y)
>
user=> ("X" "Y")
ClassCastException java.lang.String cannot be cast to clojure.lang.IFn
user/eval116 (NO_SOURCE_FILE:32)
user=> '(X Y)
(X Y)
user=> ['X 'Y]
[X Y]
user=> '[X Y]
[X Y]
user=> ('X 'Y)
nil
All of these are as I expected except the last, which I thought would throw
something like th
