Dmitry Soshnikov wrote:
Oh, wait, just have read Crock's article on => functions. A Python's style of passing manual `this'? That's interesting (why it's not specified on the wiki?
See http://wiki.ecmascript.org/doku.php?id=strawman:arrow_function_syntax&rev=1332877190 -- removed by next revision:
# 2012/03/29 06:05 show differences to current version <http://wiki.ecmascript.org/doku.php?id=strawman:arrow_function_syntax&rev=1333001151&do=diff> strawman:arrow_function_syntax <http://wiki.ecmascript.org/doku.php?id=strawman:arrow_function_syntax&rev=1333001151> Updates per TC39 meeting today brendan
The optional leading |this| parameter without an Initialiser (parameter default value) was long-hand for dynamic-this binding, the "thin arrow" (->) of previous versions. We agreed with Waldemar on cutting down a list of five "iffy" design decisions, see his meeting notes. Thin-arrow and leading |this| fell quickly, and the desire for "one arrow" was clear.
The detailed rationale for killing leading |this| is less clear, but without it we have fewer function forms as you note (not sure where your 6 count came from, but no worries). The "YAGNI" and "dynamic-this is a foot-gun" arguments favored leaving out -> or (this, arg1, ~~~ argN) syntax. These are not absolute judgments, obviously. They're KISS and "when in doubt, leave it out" relative judgments.
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