Not, not working

Monkey Forums/Monkey Programming/Not, not working

slenkar

(Posted 2012) [#1]

Function Main:Int()
If Not 1>2
Print "one is not bigger than 2"
Else
Print "one is bigger than 2"
Endif

End Function

tested in html5

muddy_shoes

(Posted 2012) [#2]

If Not (1>2)

c.k.	(Posted 2012) [#3]

Here's my take:

It's doing:

If ( Not 1 ) > 2

which is

If 0 > 2

This fixes it:

If Not (1>2)

So, could be a bug, depending on what symbol thingy should take precedence...

Xaron

(Posted 2012) [#4]

"Not" is an unary operator while <, >, = ... are not. Unary operators always have priority.

Samah

(Posted 2012) [#5]

[monkeycode]If 1 <= 2[/monkeycode]

jpoag

(Posted 2012) [#6]

c.k. is right

Also note that 'Not' evaluates to a Boolean type. That means you can put any number there you want except zero and the result will always be the same.

So really, it's

[monkeycode]
If Not 1>2 'original
If (Not 1) > 2 'unary precedence
If false > 2 'NOT forces Boolean
If 0 > 2 'Compare operator casts to Int()[/monkeycode]

And then the whole thing is optimized out because both sides of the operator are constant expressions.

Floyd

(Posted 2012) [#7]

This seems to be the Precedence Table, although the docs don't call it that.

Operators within a block have the same precedence, such as

+	Unary plus
-	Unary minus
~	Bitwise complement
Not	Boolean inverse

with blocks higher in the table having higher precedence.