* What does byte-compile a variable containing a lambda do?
@ 2009-06-03 2:00 Lennart Borgman
2009-06-03 8:45 ` Andreas Schwab
0 siblings, 1 reply; 3+ messages in thread
From: Lennart Borgman @ 2009-06-03 2:00 UTC (permalink / raw)
To: Emacs-Devel devel
The help text for byte-compile says
byte-compile is a compiled Lisp function in `bytecomp.el'.
(byte-compile form)
If form is a symbol, byte-compile its function definition.
If form is a lambda or a macro, byte-compile it as a function.
I do not understand the last sentence. What happens? If a variable
contains a lambda and you do
(byte-compile VAR-WITH-LAMBDA)
what happens? Is the content of the variable changed or does
byte-compile return something?
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: What does byte-compile a variable containing a lambda do?
2009-06-03 2:00 What does byte-compile a variable containing a lambda do? Lennart Borgman
@ 2009-06-03 8:45 ` Andreas Schwab
2009-06-03 9:28 ` Lennart Borgman
0 siblings, 1 reply; 3+ messages in thread
From: Andreas Schwab @ 2009-06-03 8:45 UTC (permalink / raw)
To: Lennart Borgman; +Cc: Emacs-Devel devel
Lennart Borgman <lennart.borgman@gmail.com> writes:
> The help text for byte-compile says
>
> byte-compile is a compiled Lisp function in `bytecomp.el'.
>
> (byte-compile form)
>
> If form is a symbol, byte-compile its function definition.
> If form is a lambda or a macro, byte-compile it as a function.
>
> I do not understand the last sentence. What happens? If a variable
> contains a lambda and you do
>
> (byte-compile VAR-WITH-LAMBDA)
Since byte-compile is a regular function, it can only see the value it
gets passed. So unless you pass it a symbol (first case) it can only
return the byte compiled form without side effect.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: What does byte-compile a variable containing a lambda do?
2009-06-03 8:45 ` Andreas Schwab
@ 2009-06-03 9:28 ` Lennart Borgman
0 siblings, 0 replies; 3+ messages in thread
From: Lennart Borgman @ 2009-06-03 9:28 UTC (permalink / raw)
To: Andreas Schwab; +Cc: Emacs-Devel devel
On Wed, Jun 3, 2009 at 10:45 AM, Andreas Schwab <schwab@linux-m68k.org> wrote:
> Lennart Borgman <lennart.borgman@gmail.com> writes:
>
>> The help text for byte-compile says
>>
>> byte-compile is a compiled Lisp function in `bytecomp.el'.
>>
>> (byte-compile form)
>>
>> If form is a symbol, byte-compile its function definition.
>> If form is a lambda or a macro, byte-compile it as a function.
>>
>> I do not understand the last sentence. What happens? If a variable
>> contains a lambda and you do
>>
>> (byte-compile VAR-WITH-LAMBDA)
>
> Since byte-compile is a regular function, it can only see the value it
> gets passed. So unless you pass it a symbol (first case) it can only
> return the byte compiled form without side effect.
Yes, but in the first case in the doc string it byte compiles the
function definition "in place". In the second case I think it should
say that it returns the byte compiled function, or?
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-06-03 2:00 What does byte-compile a variable containing a lambda do? Lennart Borgman
2009-06-03 8:45 ` Andreas Schwab
2009-06-03 9:28 ` Lennart Borgman
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