The str accessor does not work on columns selected using the .columns property

[risenW]

Selecting a column from a dataframe returns a Series, but the .str accessor does not work when column has NaN values. For example running the following:

data = { "Name": ["Apples", "App", "Banana", undefined],
            "Count": [NaN, 5, NaN, 10] ,
            "Price": [200, 300, 40, 250] }

df = new dfd.DataFrame(data)
name_sf = df.column("Name")
name_sf.str.startsWith("App")

gives the following error:

TypeError: n.startsWith is not a function

[adithyaakrishna]

@risenW Ig this can be fixed by using name.sf.str.startsWith(data.Name[1]). Not sure tho, as I'm still learning 😶

[risenW]

@risenW Ig this can be fixed by using name.sf.str.startsWith(data.Name[1]). Not sure tho, as I'm still learning 😶

Note really. I think the problem is caused by the fact that the value is not cast to a String type. So therefore calling string functions on it do not work.

Try casting the values to string explicitly first. I'm sure this will be fixed in the str class.

[adithyaakrishna]

Got it, will try that 💯

[risenW]

FIXED in #213