merged 0.1.4 (dd91cc4a) · Commits · bsmrgo / playground

dataraces/dataraces.go

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		package dataraces

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		package dataraces

		import (
		"sync"
		"testing"
		)

		func TestDatarace1(t *testing.T) {
		// THIS IS WRONG
		var wg sync.WaitGroup
		wg.Add(5)
		for i := 0; i < 5; i++ {
		go func() {
		t.Logf("i: %d", i)
		wg.Done()
		}()
		}
		wg.Wait()
		}
		func TestDatarace2(t *testing.T) {
		// THIS IS WORKING
		var wg sync.WaitGroup
		wg.Add(5)
		for i := 0; i < 5; i++ {
		go func(n int) {
		t.Logf("i: %d", n)
		wg.Done()
		}(i)
		}
		wg.Wait()
		}

		func TestDatarace3(t *testing.T) {
		// THIS IS WORKING AS WELL
		var wg sync.WaitGroup
		wg.Add(5)
		for i := 0; i < 5; i++ {
		n := i
		go func() {
		t.Logf("i: %d", n)
		wg.Done()
		}()
		}
		wg.Wait()
		}

0 → 100644

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		package dynamictypes

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		package dynamictypes

		import "testing"

		func TestDynamicTypes(t *testing.T) {
		for _, v := range []interface{}{
		42,
		3.1415926,
		"Hello, World!",
		'€',
		3 + 2i,
		} {
		//t.Logf("%v", v)
		switch v.(type) {
		case int:
		t.Logf("int: %d", v)
		case float64:
		t.Logf("float64: %f", v)
		case string:
		t.Logf("string: %q", v)
		default:
		t.Logf("%t: %f", v, v)
		}
		}
		}

		func getValue() interface{} {
		return 3 //.1415926
		}

		func TestAssignment(t *testing.T) {
		v := getValue()
		a, ok := v.(int)
		if ok == false {
		t.Logf("failed to convert")
		} else {
		t.Logf("%d", a)
		}
		}

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		module repositories.muehmer.net/bsmrgo/playground

		go 1.14
		go 1.15

		require golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073
		require golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a