#understanding intelliJ debugger

1 messages · Page 1 of 1 (latest)

hasty pewter
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i am trying to see how the value of a variable in a for loop changes in each loop
so i added a "watch" to it
but it has so many drop down things , i dont understand these , what are these?

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crude heraldBOT
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<@&987246527741304832> please have a look, thanks.

hasty pewter
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and each drop down has child drop down things

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i just want to know the value of the variable

dawn violet
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but it has so many drop down things , i dont understand these , what are these?
your variable got a specific type and that type has multiple fields in the class, each entry is simply a field of some class

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for example:

class Computer {
    Memory memory;
    CPU cpu;
    // ...
}

and then imagine you watch a variable of type computer:

Computer myComputer = ...;

I will look like this:

- myComputer
  - memory
    ... (fields of memory variable)
  - cpu
    ... (fields of cpu variable)
drifting vapor
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thing is, that variable isnt just a string or an int

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its a complex class consisting of multiple fields who have fields themselves and so on

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so it shows u all of that

sand steeple
hasty pewter
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oh i see!

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that makes sense

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so i guess i dont need to pay attention to all the fields and subfields ?

dawn violet
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only the stuff you are interested in
and that depends on the context of why you debug

hasty pewter
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i want to see the value of the variable

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here i see that there is a field which is labelled "value"
is this the value?
but then what is the first = mean?

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like in the first line

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is this the value?
or is this the value?

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dawn violet
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"value" of the variable

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what do you even mean

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you always talk about "value"

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if your variables holds some type then the value is either null or an instance of that type or subtype

hasty pewter
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so value of variable is whatever assigned to it , right?

dawn violet
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yep

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your variable additionally got a field that is literally called "value"

hasty pewter
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but why?

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(okay yes thats a stupid question)

dawn violet
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because thats the definition of the class

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it got a field

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no idea why

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did you create that class?

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its just unlucky and adds to confusion here

hasty pewter
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i should look into the definition of class

hasty pewter
dawn violet
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its basically just:

class ... {
    ObjectIdentifierValue value;
}

and thus its displayed as "value"

hasty pewter
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aha

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this is what is assigned to the variable btw

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and symbol is this

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