FindMapElement() need a simple pointer example

[normeus]

The example for FindMapElement() should also show the state of the current map element after the command:

Code: Select all

 NewMap Country.s()

  Country("US") = "United States"
  Country("FR") = "France"
  Country("GE") = "Germany"

  If FindMapElement(Country(), "US")
    Debug "'US' is in the country list."
    Debug country()
  Else
    Debug "'US' is NOT in the country list !"
    Debug Country()  
  EndIf

  If FindMapElement(Country(), "UK")
    Debug "'UK' is in the country list."
  Debug Country()    
  Else
    Debug "'UK' is NOT in the country list !"
  Debug Country()    
  EndIf
    If FindMapElement(Country(), "FR")
    Debug "'FR' is in the country list."
  Debug Country()  
  Else
    Debug "'FR' is NOT in the country list !"
  Debug Country()    
EndIf

My question is about the pointer it returns when it finds an element. Is it a pointer to a pointer? I've never used it. I was wondering if anyone has an example without using a map of structures just a plain simple map.

Code: Select all

*ptr=FindMapElement(Country(), "US")
If *ptr
  ShowMemoryViewer(@*ptr,1000)
EndIf

Thank you.
Norm.

[idle]

it sets the current element to the found element and returns the address of the found element

it returns the pointer and the map is a string so

Code: Select all

*ptr.string =FindMapElement(Country(), "US")
If *ptr
  Debug *ptr\s 
  ShowMemoryViewer(@*ptr\s,1000)
EndIf

[normeus]

Thank you idle!
So this would be an example of the element changing and the usage of the pointer returned by FindMapElement()

Code: Select all

NewMap Country.s()

  Country("US") = "United States"
  Country("FR") = "France"
  Country("GE") = "Germany"

  If FindMapElement(Country(), "US")
    Debug "'US' is in the country list."
    Debug country()
  Else
    Debug "'US' is NOT in the country list !"
    Debug Country()  
  EndIf

  If FindMapElement(Country(), "UK")
    Debug "'UK' is in the country list."
  Debug Country()    
  Else
    Debug "'UK' is NOT in the country list !"
  Debug Country()    
  EndIf
    If FindMapElement(Country(), "FR")
    Debug "'FR' is in the country list."
  Debug Country()  
  Else
    Debug "'FR' is NOT in the country list !"
  Debug Country()    
EndIf

*ptr.string =FindMapElement(Country(), "US")
If *ptr
   Debug *ptr\s
   Debug Country() 
EndIf

I was overthinking the object situation. No more coffee for me.
Thank you.
Norm.

[idle]

Thank you idle!
So this would be an example of the element changing and the usage of the pointer returned by FindMapElement()

Code: Select all

NewMap Country.s()

  Country("US") = "United States"
  Country("FR") = "France"
  Country("GE") = "Germany"

  If FindMapElement(Country(), "US")
    Debug "'US' is in the country list."
    Debug country()
  Else
    Debug "'US' is NOT in the country list !"
    Debug Country()  
  EndIf

  If FindMapElement(Country(), "UK")
    Debug "'UK' is in the country list."
  Debug Country()    
  Else
    Debug "'UK' is NOT in the country list !"
  Debug Country()    
  EndIf
    If FindMapElement(Country(), "FR")
    Debug "'FR' is in the country list."
  Debug Country()  
  Else
    Debug "'FR' is NOT in the country list !"
  Debug Country()    
EndIf

*ptr.string =FindMapElement(Country(), "US")
If *ptr
   Debug *ptr\s
   Debug Country() 
EndIf

I was overthinking the object situation. No more coffee for me.
Thank you.
Norm.

I need coffee today or maybe I skip and straight to the wine!

[morosh]

where the type .string is documented?

[infratec]

.String is a structure like .Integer .Ascii ...

You can find them in ... 'Tools'->'Structure directory' (or similar, since I use the german IDE)

[morosh]

Thank you Infratec