Practical Artificial Intelligence with Swift by Tim Nugent & Paris Buttfield-Addison & Jonathon Manning & Mars Geldard

Author:Tim Nugent & Paris Buttfield-Addison & Jonathon Manning & Mars Geldard [Tim Nugent]
Language: eng
Format: epub, azw3
Publisher: O'Reilly Media, Inc.
Published: 2019-10-22T16:00:00+00:00

First, let’s make some changes to the enum for Sentiment.swifts, Sentiment:

Add an extra case at the beginning of the Sentiment enum, with the extra line covering a lack of sentiment:

case positive = "Positive" case negative = "Negative" case neutral = "None"

Similarly, add a default case to the switch statement in the icon variable, to account for a lack of sentiment:

var icon: String { switch self { case .positive: return "" case .negative: return "" default: return "" } }

For the color, return gray if there’s no sentiment found:

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