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legend

If NOT

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legend

Hello, what is the reason this short code isn't work?

$test = "15"

if not $test = "1" Then
MsgBox("","","test is not : 1")
Else
EndIf

I could use: > <, bigger than or smaller than, but I'd like to use if not.

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kylomas

Try it like this

$test = "15"

if not ($test = "1") Then
MsgBox("","","test is not : 1")
Else
EndIf

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"I like pigs.  Dogs look up to us.  Cats look down on us.  Pigs treat us as equals."

- Sir Winston Churchill

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mikell

Maybe kylomas answer is better than mine, may be (not) :D

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legend

that worked, sorry for this stupid question, but why does it need : ( )

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Belini

@legend see if that helps.

$test = "15"

If not ($test = "1") Then
    MsgBox("", "", "test is not = 1")
Else
    MsgBox("", "", "test is = 1")
EndIf

$test = Random(0, 10, 1)
MsgBox("", "", "Number drawn = " & $test)

If $test > 5 Then
    MsgBox("", "", "test is greater than 5")
ElseIf $test < 5 Then
    MsgBox("", "", "Test is less than 5")
Else
    MsgBox("", "", "test is equal to 5")
EndIf

$test = Random(1, 4, 1)
MsgBox("", "", "Number drawn = " & $test)

Switch $test
    Case 1
        MsgBox("", "", "test is = 1")
    Case 2
        MsgBox("", "", "test is = 2")
    Case 3
        MsgBox("", "", "test is = 3")
    Case 4
        MsgBox("", "", "test is = 4")
EndSwitch
Edited by Belini

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mikell

The answer is in the helpfile, see 'operators'

'not' checks a true/false logical operation, so you could get the same result using

if not Execute($test = "1") Then ...

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Blue_Drache

that worked, sorry for this stupid question, but why does it need : ( )

 

Because you're evaluating a literal string and not a numerical value?

Edited by Blue_Drache

Lofting the cyberwinds on teknoleather wings, I am...The Blue Drache

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trancexx

Correct answer is because operator NOT has higher precedence than operator =.

  • Like 1

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eMyvnE

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BrewManNH

that worked, sorry for this stupid question, but why does it need : ( )

Because it checks whether or not $test is true before evaluating whether $test = "1", putting it in parentheses forces the comparison of $test = "1" to determine if that part is true, if ($test = "1") then it's true, so using Not checks to see if it's false


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kylomas

Maybe kylomas answer is better than mine, may be (not) :D

 

Maybe I just type slower.. :bye:


Forum Rules         Procedure for posting code

"I like pigs.  Dogs look up to us.  Cats look down on us.  Pigs treat us as equals."

- Sir Winston Churchill

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DW1

Correct answer is because operator NOT has higher precedence than operator =.

Meaning "Not $test" will be interpreted as "false" and "1" will be interpreted as "true" so what you have written is "If False = True".

Right?

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kylomas

No, it is because

if not $test = 1

evaluates $test for true or false then tests that result against 1, whereas,

if not ($test = 1)

evaluates the entire expression

edit: without knowing the value of $test you do not know what it will evaluate to

edit2: so far we've said the same thing three different ways...

Edited by kylomas
  • Like 1

Forum Rules         Procedure for posting code

"I like pigs.  Dogs look up to us.  Cats look down on us.  Pigs treat us as equals."

- Sir Winston Churchill

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jchd

Only women are concise here!

Edited by jchd

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Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
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PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

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SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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