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Preserve operation order

Aperta
  • Qualcosa non va?
#7 20 commenti 12 reazioni 0 assegnatari Vedi su GitHub

I maintainer di solito rispondono entro 1 giorno

Nessuno ha ancora preso questa issue.

  • #15 di @hermione03 — chiusa senza merge

Valutazione

Difficoltà
5/5
Tempo stimato
Più di una settimana
Idoneità per principianti
22/100
Tipo di issue
Funzionalità
Chiarezza
Abbastanza chiara
Stato di attività
Tranquilla
Stack tecnologico
android, kotlin
Ambito
mobile

Direzione di ricerca

The payload names no source files, so start with the comment thread and the closed, unmerged pull request #15 to learn why it was not merged. The issue depends on the number data type change in issue #6 and on the parentheses and input-flow design, which the maintainers have not settled. Ask on the thread for a decision on the input design before writing code. Done means the whole expression is entered and evaluated with standard operator precedence and parentheses.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

feature request

Checklist

  • I made sure that there are no existing issues - open or closed - to which I could contribute my information.
  • I have read the FAQ and my problem isn't listed.
  • I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
  • This issue contains only one feature request.
  • I have read and understood the contribution guidelines.

Is your feature request related to a problem? Please describe.
Calculator currently does operations in a sequence, what can be a bit misleading, because all system calculators on Android I've seen were preserving operations order.

Describe the solution you'd like
Instead of current way of input, which works like traditional digital calculators, it should rather work like stock Android calculators. It should allow to input the whole equation and then compute it, preserving operation order. Also, while doing this, we should add support for parentheses, so user can override the default operation order.

Describe alternatives you've considered
In SMT Tibor wanted this feature to be only in scientific calculator mode (to be done maybe someday). However, I don't think it's a good idea, since stock calculators have this in every mode, not just scientific.

Additional context
Currently implementing it will be fairly easy, because Calculator is built on exp4j EvalEx library which preserves operation order. However, if we change the number data type (issue #6), it will need to be done differently. But doing it from the scratch shouldn't be very hard, it's just implementing the simple algorithms like Shunting Yard.

Lingua principale
Kotlin
Stelle
450
Fork
57
Merge medio
2g 30m
PR unite (30g)
11

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  4. Apri una pull request che faccia riferimento al numero della issue.

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