Adding column name to its respective value?

[SMOK1N-ACES]

Is there a way for me to add the column name to the value in dataTable without a time consuming for loop? IE I want to add the column names to all of the values... IE "Physician_Profile_First_Name/Marlon", "Physician_Profile_Middle_Name/G"...
any thoughts? It can be hacky as long as I have that datatable speed. Big Thanks!

[lmullany]

Hmm, is this the type of loop you were trying to avoid?

data = dt.Frame(First=["t","r","s"],Middle=["p","q","r"],Last=["a","b","c"])
for col in data.names:
    data[col] = data[:, col + " / " + f[col]]

output:

   | First      Middle      Last    
   | str32      str32       str32   
-- + ---------  ----------  --------
 0 | First / t  Middle / p  Last / a
 1 | First / r  Middle / q  Last / b
 2 | First / s  Middle / r  Last / c

[SMOK1N-ACES]

haha yes and no. I was trying to avoid the for loop because I thought it would make things so slow it would not work for my application. But after running your method I can see that is not the case.

Big thanks for the help.

[oleksiyskononenko]

Yeah, that's the loop over the columns only, and not over all the data. So it won't cause any significant performance drop.