New keyword - IsInitialized

Daestrum

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Erel wrote in post #5

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

b4x-de

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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

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Daestrum said:
Note that it will eventually be IsNotInitialized due to name conflicts.
Click to expand...
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:
B4X: 
If IsNotInitialized(Button1) = False Then Button.Text = "abc"
'or
If Not(IsNotInitialized(Button1)) Then ...
But we will need to get used to this
 

Daestrum

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

B4X: 
If NotInitialized(something) then ....
 

udg

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If NotInitialized(something) then ....
Click to expand...
Double negation is stil possible, and also a very ugly
B4X: 
if Not(NotInizialized(something) then ..
 

Daestrum

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

udg

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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

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Erel said:
Note that it will eventually be IsNotInitialized due to name conflicts.
Click to expand...
About the name conflict, would it make a difference if you simply named it Initialized?

B4X: 
If Not(Initialized(Lst)) Then Return
 
S

Spavlyuk

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

B4X: 
If Variable Is Initialized Then Return
If Variable Is Not Initialized Then Return
 

MrKim

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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.
 
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