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100_errors_go/interfaces/main.go

@@ -0,0 +1,72 @@
+package main
+
+BAD
+// Producer
+
+type CustomerStorage interface {
+	StoreCustomer(customer string) error
+	GetCustomer(is string) error
+	UpdateCustomer(customer string) error
+	GetAllCustomers() ([]string,error)
+	GetCustomerWithoutContract() ([]string,error)
+} 
+
+//======================================
+
+
+// Consumer
+
+type customerGetter interface {
+	GetAllCustomers() ([]string,error)
+}
+
+
+
+//===================================================================
+
+type IntConfig struct {
+	// ...
+}
+
+func (c IntConfig) Get() int {        <======== PRODUCER
+	return 0
+}
+
+func (c IntConfig) Set(value int) {
+	//...
+}
+
+
+
+Consumer
+
+type confifSetter interface{
+	Set()
+}
+
+type configGetter interface {
+	Get() int
+}
+
+type Mixed interface {
+	confifSetter
+	configGetter
+}
+
+
+
+
+
+
+
+type Foo struct {
+	threshold configGetter
+}
+
+func NewFoo(new_threshold configGetter) Foo {
+	return Foo{threshold: new_threshold}
+}
+
+func (f Foo) Bar() {
+	threshold := f.threshold.Get()
+}