Editing Shortcuts and Source Control

Using Editor Groups

Let’s get back into the rhythm of TDD. For our project, we’re going to write a function that finds all palindromes in a string. A palindrome is a phrase that’s spelled the same forwards and backwards (ignoring spaces and punctuation). For example:

palindromes('What number is never odd or even, asked the Sphinx?')

would return:

['neveroddoreven']

As frivolous as a program for finding palindromes may sound, it’s a good approximation of a real project in one important sense: the requirements aren’t precisely defined. Whereas Fizz Buzz had crystal-clear rules that we could translate directly into tests, figuring out a reasonable set of rules for the palindrome finder will require creativity and experimentation.

Create a “New Untitled File” (⌘ N on macOS, ^ N on Windows and Linux), then save it (⌘ S on macOS, ^ S on Windows and Linux) as palindromes.js. Repeat for palindromes.test.js.

Now let’s try viewing the two ...