On Mar 7, 2012, at 8:35 AM, Rick Waldron wrote:
> Honestly, I'm starting to believe that most nay-sayers would get over
> block-lambda looking weird at first and learn to really love the benefit it
> provides. Sure they might say "it looks really bizarre", but they will also
> say "remember when we had to assign var that = this; or use bind()? The dark
> ages!! I love block-lambda!"
I think there are more valid criticisms than the bizarre look alone. The block
lambda syntax has the unintuitive restriction that only a subset of expressions
may be used in an initializer:
{|a = b&c| a} // valid
{|a = b&&c| a} // invalid
(This arises from the rule "BlockParameterInitialiser : =
BitwiseXorExpression", from
http://wiki.ecmascript.org/doku.php?id=strawman:block_lambda_revival).
Using '|' to wrap arguments is problematic, given its existing usage within the
language. There is a real advantages to a proposal that wrap arguments in
parentheses, such as "optional function" based ones on this thread.
cheers,
G.
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