Re: Order of operations

The Perl print statement allows an optional file handle right after "print", like print $handle stuff....
You are confusing print.

In your code:

print "(4-1) + 2+3 * (2*2) = ", (4-1) + 2+3 * (2*2), "\n\n"; #script 1
+ answer 17

print (4-1) + 2+3 * (2*2);#script 2 does not work
[download]

add a dummy null string at the beginning to script 2:

print "",(4-1) + 2+3 * (2*2);
[download]

This makes it clear that the first arg is not a file handle.

Comment on Re: Order of operations Select or Download Code

Replies are listed 'Best First'.
Re^2: Order of operations by haukex (Archbishop) on Nov 16, 2017 at 07:42 UTC
The Perl print statement allows an optional file handle right after "print" ... This makes it clear that the first arg is not a file handle. Sorry but that's not the reason print gets confused, it's the parens. The optional file handle is independent of those: `$ perl -wMstrict -le 'print ( STDOUT "42") + 1' print (...) interpreted as function at -e line 1. Useless use of addition (+) in void context at -e line 1. 42 $ perl -wMstrict -le 'print ({*STDOUT} "42") + 1' print (...) interpreted as function at -e line 1. Useless use of addition (+) in void context at -e line 1. 42` [download]	[reply] [d/l]
Re^3: Order of operations by Marshall (Canon) on Nov 16, 2017 at 09:48 UTC
Fine, you are correct. print is confused for a different and more technically correct reason than what I said. However, my suggestion "un-confuses" print.	[reply]
Re^4: Order of operations by haukex (Archbishop) on Nov 16, 2017 at 11:49 UTC
However, my suggestion "un-confuses" print. You are correct ;-)	[reply]