New keyword - IsInitialized

[aeric]

IsNotInitalized()

Just write:

If Not(IsInitialized(Lst)) Then Return ' equivalent to: If IsInitialized(Lst) = False Then Return

opps: peacemaker is faster.

 

[Daestrum]

Erel wrote in post #5

Note that it will eventually be IsNotInitialized due to name conflicts.

 

[b4x-de]

Thanks, I am aware of the Not operator. But if we try to make things easier, we might consider the common use cases first.

 

[Erel]

Note that it will eventually be IsNotInitialized due to name conflicts.

That is indeed the case. IsNotInitialized does make sense. Similar to SQL IsNull.
I did prefer IsInitialized as it is a bit simpler to grasp as we can end with double negation with IsNotInitialized:

If IsNotInitialized(Button1) = False Then Button.Text = "abc"
'or
If Not(IsNotInitialized(Button1)) Then ...

But we will need to get used to this

 

[Daestrum]

Maybe, just a suggestion drop the 'is' then code becomes

If NotInitialized(something) then ....

 

[udg]

If NotInitialized(something) then ....

Double negation is stil possible, and also a very ugly

if Not(NotInizialized(something) then ..

 

[Daestrum]

But surely you would just use 'Else' if it was Initialised.

 

[udg]

Sure. I was just pointing out a possible ugly syntax. Anyway I'm sure Erel will choose the form he believes will be easier and better for us. We will learn how best to use it ( knowing it'll be not mandatory) as we did in the past with other language innovations.

 

[Sandman]

Note that it will eventually be IsNotInitialized due to name conflicts.

About the name conflict, would it make a difference if you simply named it Initialized?

If Not(Initialized(Lst)) Then Return

 

[Erel]

About the name conflict, would it make a difference if you simply named it Initialized?

Maybe, just a suggestion drop the 'is' then code becomes

Two good suggestions that I need to check.

 

[Spavlyuk]

What about making it similar to the C# is null syntax? Could avoid all the useless parentheses.

If Variable Is Initialized Then Return
If Variable Is Not Initialized Then Return

 

[MrKim]

Interesting. I had a boolean variable called Initialized and the latest version of b4j didn't like it so I changed it to IsInitialized and it works fine But Maybe I should change it again.