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how to declare index variables in EOL [message #1849258]

Mon, 10 January 2022 13:50

fang yan

Messages: 27
Registered: October 2020

Junior Member

Hi,

I am trying to define a variable within while loop as text_1, text_2, text_3, using index i in text_i.
But I didn't figure out how to build this index variable.
I tried to define an operation as follows.
But it seems not working

var i=1;
var variable_name: String;
variable_name= i.declareVar();
var variable_name: String;

operation Integer declareVar(): String{
var str: String;
str= "text_" + self ;
return str;
}

Any suggestion, please?
Many thanks.
Fang

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Re: how to declare index variables in EOL [message #1849259 is a reply to message #1849258]

Mon, 10 January 2022 13:53

Dimitris Kolovos

Messages: 2165
Registered: July 2009
Location: York, UK

Senior Member

Hi Fang,

I'm not sure I understand the issue you are describing. Could you please elaborate a bit more?

Best,
Dimitris

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Re: how to declare index variables in EOL [message #1849260 is a reply to message #1849259]

Mon, 10 January 2022 14:08

fang yan

Messages: 27
Registered: October 2020

Junior Member

Hi Deimitris,

My intention is to declare a variable each time the while loop runs.
For example that the size is 3 (size_source=3), then the While runs 3 times, and each time, I am hoping to declare a variable source_j, thus after 3 runs, I will have 3 variables of source_0, source_1, and source_2.
The simplified code is as follows.
I know the codes are not correct, but I don't know the right way to declare.

var size_source=inference.source.size();
var j=0;

while(size_source>0)
{
var source_j: String;
source_j= inference.source.at(j).name.content;
j=j+1;
size_source= size_source-1;
}

Hope this explains better.
Thanks
Fang

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Re: how to declare index variables in EOL [message #1849261 is a reply to message #1849260]

Mon, 10 January 2022 14:20

Dimitris Kolovos

Messages: 2165
Registered: July 2009
Location: York, UK

Senior Member

Hi Fang,

You could do this using the code below but it's an ugly hack that I'd try to avoid if at all possible.

var frame = System.context.frameStack.topFrame;

for (i in 1.to(3)) {
  frame.put((
    new Native("org.eclipse.epsilon.eol.execute.context.Variable")).
      createReadOnlyVariable("var_" + i, i));
}

var_1.println();
var_2.println();
var_3.println();

Best,
Dimitris

[Updated on: Mon, 10 January 2022 14:22]

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