Initial version with test, no increment/decrement yet

.project

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+{
+	'srcDirectory' : 'src'
+}

src/.properties

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+{
+	#format : #tonel
+}

src/MyCounter/Counter.class.st

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+"
+Counter is a simple concrete class which supports incrementing and decrementing a counter.
+
+Its API is
+ - decrement, increment
+ - count
+
+Its creation API is message startingAt:  match:  startingAt: 
+"
+Class {
+	#name : #Counter,
+	#superclass : #Object,
+	#instVars : [
+		'count'
+	],
+	#category : #MyCounter
+}
+
+{ #category : #accessing }
+Counter >> count [
+	"returns the current count"
+	^ count
+]
+
+{ #category : #accessing }
+Counter >> count: val [
+	"sets the counter to a specific value"
+	count := val.
+	^ val
+	
+]

src/MyCounter/CounterTest.class.st

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+"
+This class contains tests for the Counter class
+"
+Class {
+	#name : #CounterTest,
+	#superclass : #TestCase,
+	#category : #MyCounter
+}
+
+{ #category : #tests }
+CounterTest >> testCountIsSetAndRead [
+	| c |
+	c := Counter new. 
+	c count: 7.
+	self assert: c count equals: 7.
+]

src/MyCounter/package.st

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+Package { #name : #MyCounter }