New feature - inline casting

[LucaMs]

Testing nested IIf:

Private Sub Button1_Click
   Label1.Text = IIf(IsNumber(TextField1.Text) = False, "Invalid number", IIf(TextField1.Text > number, "My number is smaller", IIf(TextField1.Text < number, "My number is larger", "Well done!!!")))
End Sub

Guess my number game.

You can do it because you have two monitors side by side and you can see half of the line on the first and the rest on the second ?

 

[LucaMs]

You can do it because you have two monitors side by side and you can see half of the line on the first and the rest on the second ?

Private Sub Button1_Click
   Label1.Text = IIf(IsNumber(TextField1.Text) = False, "Invalid number", _
                     IIf(TextField1.Text > number, "My number is smaller", _
                         IIf(TextField1.Text < number, "My number is larger", "Well done!!!")))
End Sub

 

[Ilya G.]

Testing nested IIf:

Private Sub Button1_Click
   Label1.Text = IIf(IsNumber(TextField1.Text) = False, "Invalid number", IIf(TextField1.Text > number, "My number is smaller", IIf(TextField1.Text < number, "My number is larger", "Well done!!!")))
End Sub

Guess my number game.

Will this also be in the next release?

 

[Erel]

Will this also be in the next release?

Yes. Beta version of B4J with these two features will be released today.

 

[Heuristx]

Wow, that's fast!

 

[LucaMs]

    Dim Index As Int = Sender.As(B4XView).Tag

It was useful to me right away.


BTW IIF too!!!

[for a small program that will make me a few thousand euros every month, even less than 10, perhaps ?]


P.S. IIF another time, right now:

Dim Sign as int = IIf(EventData.PrimaryButtonPressed, 1, - 1)

(I'm not sure I've given the variable a proper name but that's okay )

 

[NGUYEN TUAN ANH]

I think B4X should make everything clear, logic and coherence would be better, especially for newbies, although it might have to write more commands.

 

[AnandGupta]

especially for newbies, although it might have to write more commands.

The excellent guide is made for newbies, please check

B4A Documentation

www.b4x.com

 

[aeric]

I think B4X should make everything clear, logic and coherence would be better, especially for newbies, although it might have to write more commands.

I think B4X already is what you said except for the last part of your statement, which I don’t agree. B4X is the most not verbose programming language I ever see without compromising the easiness for beginners.

 

[aeric]

I think B4X already is what you said except for the last part of your statement, which I don’t agree. B4X is the most not verbose programming language I ever see without compromising the easiness for beginners.

My first programming language is C in school, it took me so long to understand the for-loop. When I learn VB6 I love how simple it is to write a for-next loop. B4X shares the similar syntax and that’s what I like about the language.

for (i=0; i<10; i++){
    // do something
}

For i = O to 9
    'Do something
Next

 

[alwaysbusy]

@Erel Just an observation I had while testing the BANano Tanspiler support for the new .As functionality:

' here I was expecting some kind of warning in the B4J compiler as I'm casting a Future (from GetCSS) to a String (I forgot the .Value after the GetCSS).
Log("JQAS: " & row2c1.As(JQueryElement).GetCSS("background-color").As(String).IndexOf("128"))

Is Future a special case or is this because every Object can be converted to a String (e.g. for Logging)?

Here for example, I do get a correct warning #22, and even an expected Compile error:

Dim jq As MyFirstClass
jq.Initialize("test")
Log(jq.mysecond.As(MyFirstClass)) '<-------- here I get a warning #22 because mysecond is of the type MySecondClass

B4J Version: 9.10 BETA #2
Parsing code.    (0.01s)
    Java Version: 11
Building folders structure.    (0.54s)
Compiling code.    (0.27s)
Compiling layouts code.    (0.06s)
Organizing libraries.    (0.00s)
Compiling generated Java code.    Error
B4J line: 29
Log(\
src\com\ab\b4jsdemo\main.java:90: error: incompatible types: mysecondclass cannot be converted to myfirstclass
anywheresoftware.b4a.keywords.Common.Log("test: "+BA.ObjectToString(((com.ab.b4jsdemo.myfirstclass)(_jq._mysecond /*com.ab.b4jsdemo.mysecondclass*/ ))));

Alwaysbusy

 

[Erel]

The underlying Java compiler is smart enough to know that MySecondClass cannot be converted to MyFirstClass, so it throws an error during compilation.
All types can be cast to Object and vice versa.

 

[alwaysbusy]

All types can be cast to Object

And as String too? (the Java .toString I would think)

 

[Erel]

Yes (with a very few exceptions related to arrays).

 

[Sergio Castellari]

Yes.

POLL: What do you use B4X for

I may participate if you added "for learning programming" option. Done

www.b4x.com

It is still true. For example, in HMG, users also contribute towards the development.

Hola,

Si, y en el foro de ooHG también. Seguramente por que el espiritu del grupo es igual q B4X.
Saludos cordiales,
Sergio

translation
Yes, and on the ooHG forum as well. Surely because the spirit of the group is equal to q B4X. Kind regards,