HP Prime -- App and non-app programming requests Message #1 Posted by Han on 29 Sept 2013, 1:47 p.m.
In programming apps, I have run into situations where I often think "Geez, I wish the calc did or did not do that."
1. When viewing the Plot view, we are always given an "error" if there are no equations entered and selected. So if I create an app in which I want to make custom graphs, the current state of apps is such that I have to start by copying the Function or Advanced Graphing app. If I then want to make use of the plot view, I will always have to deal with an error when no equations are entered and selected. Or, in my case, I have my users enter their functions, but they are not open sentences (in the case for Advanced Graphing) so that when I introduce the plot screen it barfs up an error about the user's function not being an open sentence.
2. Will we eventually be able to create apps without having to depend on existing apps? Or if we see bits and pieces of several apps we want to incorporate into our own app, this seems very tedious at best, and impossible at worst. I realize that certain parameters from one app can be used in another (e.g. MyApp.Variable1 can be used from MyApp even if I am running something else called YourApp). However, it does not seem that I am able to make use of a spreadsheet within an function-based app (at best I can mimic a spreadsheet with a matrix). App creation, at this point, seems very confined.
3. Is there anyway to have something similar to: << 0 WAIT >> on the HP48 in which the calc enters a low power state and "pauses" until woken up by input (either keyboard or "mouse"). The only way to get input is to force a continuous loop and constantly polling the keys and mouse. This seems like a big waste of battery power. (On the HP48, the calculator essentially "pauses" until a key is pressed when using << 0 WAIT >>)
Han
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