Hi JmageK,
> The patch is a nice function. I'm having a hard time understanding this entire
> code. Can you explain how it works? What gets bound to @X? Thanks!
Sure!
(patch http '(out *HtSock (cond @X))
(fill
'(prog
(ana)
(out *HtSock (cond . @X)) ) ) )
The first argument to 'patch' is the value of 'http', i.e. the whole function
definition to be modified.
The second argument is the pattern. It matches to the expression
(out *HtSock
(cond
((match '("-" @X "." "h" "t" "m" "l") U)
(and *SesId (timeout *Timeout))
... ) ) )
Thus, '@X' gets bound to
(((match '("-" @X "." "h" "t" "m" "l") U)
(and *SesId (timeout *Timeout))
... ) ) ) )
Note the additional list level, as 'match' binds its parameters to lists!
So we need the dot in
(out *HtSock (cond . @X))
so that this subexpression gets properly restored.
☺/ A!ex
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