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Anonymous's avatar
Anonymous
Not applicable
8 years ago
Solved

Integer Extraction function returning Expression.Error Message

Through some research, I found this formula to extract numbers only to use in my queries. Since it is used often, I want to write a function from it. However, I can't seem to make it work properly. I'll paste an example of how I use it regularly, and the function I wrote from it which is giving me an error.

 

This is a snippet that works just fine:

 

 

Below is a snippet of the function which is giving me errors:

 

The error message reads as: Expression.Error: The name '_' wasn't recognized.  Make sure it's spelled correctly.

 

In addition, I would like to know what causes Expression.Error messages. In this case, I understand that the underscore isn't defined. However, why does it seem to work fine within the image above?

 

 

 

  • Anonymous's avatar
    Anonymous
    8 years ago

    Anonymous,

    Please check the following code.

    let intextaction=(AlphaNumeric as  text)=>

let
    Source = Text.Combine(List.RemoveNulls(List.Transform(Text.ToList(""&AlphaNumeric&""),each if Value.Is(Value.FromText(_), type number) then _ else null)))
in
    Source

in
   intextaction



    Regards,
    Lydia

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  • Anonymous's avatar
    Anonymous
    Not applicable
    8 years ago

    Anonymous,

    Please check the following code.

    let intextaction=(AlphaNumeric as  text)=>

let
    Source = Text.Combine(List.RemoveNulls(List.Transform(Text.ToList(""&AlphaNumeric&""),each if Value.Is(Value.FromText(_), type number) then _ else null)))
in
    Source

in
   intextaction



    Regards,
    Lydia

    • Anonymous's avatar
      Anonymous
      Not applicable
      8 years ago

      Lydia,

       

      Thank you, this solved the problem. After looking closely, the List.Transform method requires an "each" statement (not sure if that's how you say it "each statement"?).

       

      The AlphaNumeric variable can go in there without having any quotes or ampersands.