< > = <> == ? confused

[tarre]

Hellow fellas. im wondering what <> and == means in if-stats

i know what < and >, = means but not <> and == . so could anyone tell me ?

[therks]

Hellow fellas. im wondering what <> and == means in if-stats

i know what < and >, = means but not <> and == . so could anyone tell me ?

<> means not equal.

ie: (1 <> 2) true

== is only for strings, and means case sensitive equal.

ie: ('Hello' == 'hello') false

('Hello' == 'Hello') true

Look in the help file under Operators.

[tarre]

okay. thx

[rudi]

<> means not equal.

ie: (1 <> 2) true

== is only for strings

Almost. Boolean values also take advantage of "==" as comparing operand as well:

if 0 = False Then 
    MsgBox(0,"one ""="" used","0=False is true")
Else
    MsgBox(0,"one ""="" used","0=False is *NOT* true")
EndIf

if 0 == False Then 
    MsgBox(0,"two ""=="" used","0==False is true")
Else
    MsgBox(0,"two ""=="" used","0==False is *NOT* true")
EndIf

Regards, Rudi.

[therks]

Not exactly as you think. You know what's happening there? The == is converting False and 0 into strings. So it's not comparing Boolean(False) to Integer(0), it's comparing String(0) to String(False) (which obviously returns false).

Case in point:

MsgBox(0, 'False = "False"', False = "False")
MsgBox(0, 'False == "False"', False == "False")

Sorry to revive an old thread, but I had to correct this incorrect thinking.

[rudi]

Not exactly as you think. You know what's happening there? The == is converting False and 0 into strings. So it's not comparing Boolean(False) to Integer(0), it's comparing String(0) to String(False) (which obviously returns false).

Case in point:

MsgBox(0, 'False = "False"', False = "False")
MsgBox(0, 'False == "False"', False == "False")

Sorry to revive an old thread, but I had to correct this incorrect thinking.

I see, thanks for clarifying!

I used it so far for

If <expression> Then

statements, when I wanted to be sure, that it's not a "0" (which is resulting in the same action as a boolean "False") but a real, boolean "False".

But due to your esplanation, this doesn't ensure that as well. So I think I'd need to use

if (not <expression>) and (<expression> == "False") then

to ensure, that <expression> is really a boolean "False", right?

The first one checks, that it's not the String "False", the 2nd one, that it's not "0".

Regards, Rudi.

Edited October 1, 2008 by rudi