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import android.app.Activity; | |
import android.content.Context; | |
import android.content.Intent; | |
import android.content.pm.ResolveInfo; | |
import android.content.res.AssetFileDescriptor; | |
import android.database.Cursor; | |
import android.graphics.Bitmap; | |
import android.graphics.BitmapFactory; | |
import android.graphics.Matrix; | |
import android.media.ExifInterface; |
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#lang racket | |
(provide (all-defined-out)) ;; so we can put tests in a second file | |
;; definition of structures for MUPL programs | |
(struct var (string) #:transparent) ;; a variable, e.g., (var "foo") | |
(struct int (num) #:transparent) ;; a constant number, e.g., (int 17) | |
(struct add (e1 e2) #:transparent) ;; add two expressions | |
(struct ifgreater (e1 e2 e3 e4) #:transparent) ;; if e1 > e2 then e3 else e4 | |
(struct fun (nameopt formal body) #:transparent) ;; a recursive(?) 1-argument function | |
(struct call (funexp actual) #:transparent) ;; function call |
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.Display { | |
display: flex; | |
justify-content: flex-end; | |
align-items: center; | |
background: #2b293d; | |
height: 20%; | |
color: #80c9c9; | |
font-size: 24px; | |
} |
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.Keypad { | |
display: flex; | |
flex-wrap: wrap; | |
flex-direction: column; | |
height: 80%; | |
} |
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body { | |
display: flex; | |
align-items: center; | |
justify-content: center; | |
overflow: hidden; | |
} | |
.Calculator { | |
width: 400px; | |
height: 300px; |
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import React, {Component} from 'react'; | |
import Button from './Button'; | |
import './Calculator.css'; | |
import Display from './Display'; | |
import Keypad from './Keypad'; | |
class Calculator extends Component { | |
constructor() { | |
super(); | |
this.state = { data: ''} |