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Tip: Add a "debug mode" to your apps

Making hidden fields visible can be useful when you're developing your app. Add a "debug mode" switch to your first screen and tie the Visible property of all hidden fields to this debug switch to easily make all hidden fields visible. Then, hide the switch before you share the app.

When we create apps, we like to use hidden fields to keep our formulas concise and easy-to-read. Hidden fields enable you to move parts of your formulas to new fields, which you then refer to by name. As the fields are hidden, your users don’t notice the change. The upshot is that your formulas become shorter and easier to maintain.

When you’re in the process of designing your app, though, it’s helpful to be able to look at the calculated values of your hidden fields. You can toggle the Visible property in the inspector to make them visible and then reload your app, but this is cumbersome if you have many hidden fields, as the change needs to be made for every individual field.

To make this process more streamlined, you can use the fact that the Visible property is a calculated property to your advantage. You can add a new hidden field, named DebugMode, whose formula is either TRUE or FALSE, and associate the formula DebugMode with the Visible property of all hidden fields.

(Software developers like to refer to software errors as bugs and to the processing of finding and removing these software errors as debugging.)

That way, you can change the formula from FALSE to TRUE in one place to make all relevant hidden fields visible without having to make the change for each and every hidden field:

Using a hidden, logical field to togggle visibility of hidden        fields

Better yet, you can make the DebugMode field a switch, which enables you to toggle whether hidden fields are visible while you’re running your app:

Using a switch field to togggle visibility of hidden fields

Thanks to cross-references, you can reference this switch field from any panel of your app, meaning that you only need one debug switch. We suggest adding it to your first screen.

When you’re developing your app, use the debug mode switch to test your hidden fields. Then, before sharing the app with a wider audience, simply make the debug mode switch hidden.

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