From 55c1c220d07c37610c9aa61c583eccb3c8e3829e Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Mon, 24 Feb 2014 12:12:01 +0100
Subject: [PATCH] Added delete to database interfaces

---
 ethdb/database.go        | 4 ++++
 ethdb/memory_database.go | 6 ++++++
 ethutil/db.go            | 1 +
 3 files changed, 11 insertions(+)

diff --git a/ethdb/database.go b/ethdb/database.go
index 76e4b4e4d..1e987920d 100644
--- a/ethdb/database.go
+++ b/ethdb/database.go
@@ -36,6 +36,10 @@ func (db *LDBDatabase) Get(key []byte) ([]byte, error) {
 	return db.db.Get(key, nil)
 }
 
+func (db *LDBDatabase) Delete(key []byte) error {
+	return db.db.Delete(key, nil)
+}
+
 func (db *LDBDatabase) LastKnownTD() []byte {
 	data, _ := db.db.Get([]byte("LastKnownTotalDifficulty"), nil)
 
diff --git a/ethdb/memory_database.go b/ethdb/memory_database.go
index cd9f24000..9e91eb7d6 100644
--- a/ethdb/memory_database.go
+++ b/ethdb/memory_database.go
@@ -26,6 +26,12 @@ func (db *MemDatabase) Get(key []byte) ([]byte, error) {
 	return db.db[string(key)], nil
 }
 
+func (db *MemDatabase) Delete(key []byte) error {
+	delete(db.db, string(key))
+
+	return nil
+}
+
 func (db *MemDatabase) Print() {
 	for key, val := range db.db {
 		fmt.Printf("%x(%d): ", key, len(key))
diff --git a/ethutil/db.go b/ethutil/db.go
index 3681c4b05..b11d5d726 100644
--- a/ethutil/db.go
+++ b/ethutil/db.go
@@ -4,6 +4,7 @@ package ethutil
 type Database interface {
 	Put(key []byte, value []byte)
 	Get(key []byte) ([]byte, error)
+	Delete(key []byte) error
 	LastKnownTD() []byte
 	Close()
 	Print()