How to name your signal types

When you send a signal, you’ll always have to tell TelemetryDeck what type of signal you want to send. Type is just a String, so in theory you could add anything in there. Your type could be asfdgllahsavhaligha, or This sentence no verb or even 🤖.

We recommend a different style to keep things clear and easy to find.

Single word types

If you’re just hacking with TelemetryDeck, consider using a single word for your type. It’s easy to type, and as long as your app is not too big, it’s easy to find the signal type you’re looking for.

Examples are:

• AppLaunchedByNotification
• ShareButtonAppeared
• SavePreferences

Paths in Dot Notation

What many of our customers do (and we ourselves internally as well) is using a dot notation that represents the path of an action or event inside the app.

Here are some examples:

• InsightEditor.MetaEditor.saveInsight
• Main.appLaunched
• Preferences.ErrorModal.shown

We recommend you don’t make the paths too specific or deeper than, say, 3 levels. Otherwise, you’ll run into annoying mismatches when you move a feature around but can’t really rename the insight type to match.

We prefer to use UpperCamelCase for the prefix components but lowerCamelCase for the last component because that matches how calls are made in most programming languages, including Swift and Kotlin. The convention there is that type names are upper case but functions and parameters are lower case. We feel this style looks more natural alongside other code, but you can of course use a different style, just be consistent with it!

Distinguishing between views, actions and events

If you want to distinguish between views, actions and events, or just views and actions, you can add that to the type, such as InsightEditor.MetaEditor.Actions.saveInsight. However, we don’t get much value from that. Instead, we usually annotate types implicitly using grammar:

1. Present tense compound verbs are actions:

• InsightEditor.MetaEditor.saveInsight
• Preferences.syncNow

2. Anything in past tense is a view or an event:

• InsightEditor.appeared
• Main.appLaunched
• Preferences.ErrorModal.shown

Don’t be afraid to play around a bit and find out what works best for you!