From 08e7397975299437e2bca094db3bfa6684700870 Mon Sep 17 00:00:00 2001
From: xth <xth@live.com>
Date: Tue, 16 May 2023 21:19:50 +0800
Subject: [PATCH] Put any object conveniently as below: // ... User user;
db_->Put("Tom", user); // or db_->Put("Tom", user, WriteOptions());
---
include/leveldb/db.h | 6 ++++++
include/leveldb/slice.h | 4 ++++
2 files changed, 10 insertions(+)
diff --git a/include/leveldb/db.h b/include/leveldb/db.h
index a13d147..5b40018 100644
--- a/include/leveldb/db.h
+++ b/include/leveldb/db.h
@@ -66,6 +66,12 @@ class LEVELDB_EXPORT DB {
virtual Status Put(const WriteOptions& options, const Slice& key,
const Slice& value) = 0;
+ // Convenience wrapper
+ Status Put(const Slice& key, const Slice& value,
+ const WriteOptions& options = WriteOptions()) {
+ return Put(options, key, value);
+ };
+
// Remove the database entry (if any) for "key". Returns OK on
// success, and a non-OK status on error. It is not an error if "key"
// did not exist in the database.
diff --git a/include/leveldb/slice.h b/include/leveldb/slice.h
index 37cb821..e6f9657 100644
--- a/include/leveldb/slice.h
+++ b/include/leveldb/slice.h
@@ -35,6 +35,10 @@ class LEVELDB_EXPORT Slice {
// Create a slice that refers to the contents of "s"
Slice(const std::string& s) : data_(s.data()), size_(s.size()) {}
+ // For any object
+ template<typename T>
+ Slice(const T& s) : data_(reinterpret_cast<const char*>(&s)), size_(sizeof(T)) {}
+
// Create a slice that refers to s[0,strlen(s)-1]
Slice(const char* s) : data_(s), size_(strlen(s)) {}