Re^2: trouble taking reference of function

Beware of prototypes when dealing with functions and named operators.

$ perl -wle'print sin(0.5) == sub { sin(@_)    }->(0.5) ?1:0'
0

$ perl -wle'print sin(0.5) == sub { sin($_[0]) }->(0.5) ?1:0'
1
[download]

Update: Added code.

Comment on Re^2: trouble taking reference of function Download Code

Replies are listed 'Best First'.
Re^3: trouble taking reference of function by Lawliet (Curate) on Mar 03, 2009 at 22:00 UTC
Huh? Why does that happen? And you didn't even know bears could type.	[reply]
Re^4: trouble taking reference of function by kyle (Abbot) on Mar 03, 2009 at 22:17 UTC
The argument to sin is in scalar context (it has a prototype of "`_`").	[reply] [d/l]
Re^5: trouble taking reference of function by Lawliet (Curate) on Mar 03, 2009 at 22:36 UTC
Oh, so it returns the sine of the number of elements passed to the function, right? And you didn't even know bears could type.	[reply]
Re^6: trouble taking reference of function by kyle (Abbot) on Mar 03, 2009 at 22:42 UTC


Do you know where your variables are?
	PerlMonks