May 2020 - Feral Cat - Software Development

How to Filter an Array of Objects in JavaScript

April 6, 2026May 28, 2020 by Carlos

Are you trying to use Javascript’s filter on an array of objects that contain arrays? Are you having trouble getting it to return elements to conditionally rebuild that array? I had the same issue and blamed the filter method for a quick sec. Buuuut lo and behold it was me as always. Still new to … Read more

Fix: IndexError – Only Integers, Slices, Ellipsis, and Boolean Arrays Are Valid Indices

April 6, 2026May 16, 2020 by Carlos

Soooo you got the IndexError: only integers, slices (`:`), ellipsis (`…`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices error. Let’s get that annoying message fixed. My Computer Setup For those Short On Time You’re trying to access an element of a Pandas index like df.columns where df is a DataFrame by using … Read more

How to Create a Class in Python 3 (With Examples)

April 6, 2026May 8, 2020 by Carlos

So how do you create a class in Python3? What is class? Why do we need a class? All great questions. My Computer Setup Python3 (Finally getting used to adding parentheses around my print statements ) macOS What is an object? So let’s go over what a class is. Classes are the preliminary step to … Read more