On May 28, 2009, at 11:48 AM, Jim Blandy wrote:
This is just a desugaring of some nested lets, but we still have yield capturing many frames. If this doesn't work, lambda is really useless.
Dave replied, but I wanted to join in agreeing on the following:
For what it's worth, speaking as a long-time Scheme fan, I wouldn't add lambda to ES. It seems too similar to function; there will be endless blog posts explaining the differences and motivation, mostly slightly wrong. The best ones will say, "Don't use it; just use function." And lambda introduces an awful lot of subtlety for something whose main claim to utility would be in allowing precise and clear definitions of new control constructs through desugaring. Natural language is bad, but not this bad.
I'm "cool" toward lambda, meaning not in favor. I'd rather reform function to the extent that doing so helps programmers. I'm not convinced that TCP matters a lot to those humans. To some programmers, and of course for macros and other things involving code generation and analysis, lambdas are great. But you can't please every(one|thing).
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