diff --git a/.cache/clangd/index/main.cpp.DA64C8250A878209.idx b/.cache/clangd/index/main.cpp.DA64C8250A878209.idx
new file mode 100644
index 0000000..5ba0978
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diff --git a/.cache/clangd/index/toolkit.h.B9107599F4B246CF.idx b/.cache/clangd/index/toolkit.h.B9107599F4B246CF.idx
new file mode 100644
index 0000000..4e0f61b
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diff --git a/.clangd b/.clangd
new file mode 100644
index 0000000..855844d
--- /dev/null
+++ b/.clangd
@@ -0,0 +1,3 @@
+CompileFlags:
+  Add: [-std=c++23]
+
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..555a306
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,15 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/clang",
+            "configurationProvider": "mvector-of-bool.cmake-tools",
+            "cppStandard": "c++23"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..0728772
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "files.associations": {
+        "*.cpp": "cpp",
+        "type_traits": "cpp"
+    }
+}
\ No newline at end of file
diff --git a/include/ini.h b/include/ini.h
new file mode 100644
index 0000000..e69de29
diff --git a/include/pch.h b/include/pch.h
new file mode 100644
index 0000000..f72c596
--- /dev/null
+++ b/include/pch.h
@@ -0,0 +1,9 @@
+#ifndef PCH_H
+#define PCH_H
+
+#include <cstring>
+#include <string>
+#include <ios>
+#include <ranges>
+
+#endif 
diff --git a/include/stringconv.h b/include/stringconv.h
new file mode 100644
index 0000000..b24b9ef
--- /dev/null
+++ b/include/stringconv.h
@@ -0,0 +1,66 @@
+#ifndef STRINGCONV_H
+#define STRINGCONV_H
+#include <type_traits>
+#include <string>
+#include <vector>
+#include <cstdlib>
+#include <cmath>
+#include <cstring>
+#include <ranges>
+
+namespace ranges = std::ranges;
+namespace views = std::ranges::views;
+constexpr size_t buffer_size = 32;
+
+namespace string{
+    template <typename T>
+        requires std::is_same_v<std::string, T> || std::is_same_v<const char *, T>
+    inline std::string replace_string(const std::string &str, T d, T e)
+    {
+        std::string result = str;
+        if (d == e)
+        {
+            return result;
+        }
+        size_t len = 0;
+        while (true)
+        {
+            auto pos = result.find(d);
+            if (pos == std::string::npos)
+            {
+                return result;
+            }
+            if constexpr (std::is_same_v<T, const char *>)
+            {
+                len = std::strlen(d);
+            }
+            else
+            {
+                len = d.length();
+            }
+            result = result.replace(pos, len, e);
+        }
+    }
+
+    template <typename T = std::string>
+        requires std::is_same_v<T, std::string> ||
+                 std::is_same_v<T, std::string_view>
+    inline std::vector<T> split(T str, T d)
+    {
+        auto v = views::split(str, d) | views::transform([](auto word)
+                                                         { return T(word.begin(), word.end()); });
+        return std::vector<T>(v.begin(), v.end());
+    }
+    
+    template<typename T>
+        requires std::is_same_v<T, double> || std::is_same_v<T, float>
+    double round(T value, int c){
+        auto temp = 1;
+        for(int i=0;i<c;i++){
+            temp=temp*10;
+        }
+        return std::round(value*temp)/temp;
+    }
+}
+
+#endif
diff --git a/include/toolkit.h b/include/toolkit.h
index 8368625..f102808 100644
--- a/include/toolkit.h
+++ b/include/toolkit.h
@@ -1,136 +1,7 @@
 #ifndef TOOLKIT_H
 #define TOOLKIT_H
 
-#include <charconv>
-#include <cstring>
-#include <expected>
-#include <type_traits>
-#include <string>
-#include <cstdlib>
-#include <ios>
-#include <vector>
-#include <ranges>
-#include <cmath>
-#include <chrono>
-
-namespace ranges = std::ranges;
-namespace views = std::ranges::views;
-
-// use for to_chars
-constexpr size_t buffer_size = 32;
-
-template <typename T>
-concept _num_type = requires {
-    std::is_same_v<T, int> ||
-        std::is_same_v<T, float> ||
-        std::is_same_v<T, long> ||
-        std::is_same_v<T, double>;
-};
-
-namespace toolkit
-{
-    enum class num_type{
-      BIN,
-      HEX,
-      OCT,
-      DEC
-    }
-
-    template <typename T>
-    inline std::expected<std::string, std::string> to_string(T value)
-    {
-        if constexpr (std::is_same_v<T, int> || std::is_same_v<T, float> || std::is_same_v<T, double>)
-        {
-            char buffer[buffer_size];
-            auto res = std::to_chars(buffer, buffer + buffer_size, value);
-            if (res.ec != std::errc())
-            {
-                return std::unexpected(std::make_error_code(res.ec).message());
-            }
-            return std::string(buffer, res.ptr - buffer);
-        }
-        else if constexpr (std::is_same_v<typename std::remove_const<T>::type,
-                                          char *>)
-        {
-            return std::to_string(value);
-        }
-    }
-
-    template <typename T = double> // requires std::is_same_v<T, std::string>
-    inline std::expected<T, std::string> stoi(const std::string &str)
-    {
-        T value;
-        auto res = std::from_chars(str.c_str(), str.c_str() + str.size(), value);
-        if (res.ec != std::errc())
-        {
-            return std::unexpected(std::make_error_code(res.ec).message());
-        }
-        return value;
-    }
-
-    template <typename T>
-        requires std::is_same_v<std::string, T> || std::is_same_v<const char *, T>
-    inline std::string replace_string(const std::string &str, T d, T e)
-    {
-        std::string result = str;
-        if (d == e)
-        {
-            return result;
-        }
-        size_t len = 0;
-        while (true)
-        {
-            auto pos = result.find(d);
-            if (pos == std::string::npos)
-            {
-                return result;
-            }
-            if constexpr (std::is_same_v<T, const char *>)
-            {
-                len = std::strlen(d);
-            }
-            else
-            {
-                len = d.length();
-            }
-            result = result.replace(pos, len, e);
-        }
-    }
-
-    template <typename T = std::string>
-        requires std::is_same_v<T, std::string> ||
-                 std::is_same_v<T, std::string_view>
-    inline std::vector<T> split(T str, T d)
-    {
-        auto v = views::split(str, d) | views::transform([](auto word)
-                                                         { return T(word.begin(), word.end()); });
-        return std::vector<T>(v.begin(), v.end());
-    }
-    
-    template<typename T>
-        requires std::is_same_v<T, double> || std::is_same_v<T, float>
-    double round(T value, int c){
-        auto temp = 1;
-        for(int i=0;i<c;i++){
-            temp=temp*10;
-        }
-        return std::round(value*temp)/temp;
-    }
-
-    inline std::string get_time_now(){
-        auto time_now = std::chrono::system_clock::now();
-        auto now_c = std::chrono::system_clock::to_time_t(time_now);
-        char buffer[32];
-#if defined(_WIN32) || defined(_WIN64)
-        auto _ = ctime_s(buffer, 32, &now_c);
-#elif defined(__linux__)
-        auto _ = ctime_r(&now_c, buffer);
-#endif
-        auto result = std::string(buffer);
-        result = replace_string(result, "\n", "");
-        return std::move(result);
-    }
-
-}
+#include "util.h"
+#include "stringconv.h"
 
 #endif
diff --git a/include/util.h b/include/util.h
new file mode 100644
index 0000000..969c005
--- /dev/null
+++ b/include/util.h
@@ -0,0 +1,60 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <stringconv.h>
+#include <expected>
+#include <chrono>
+
+namespace util{
+
+template <typename T>
+inline std::expected<std::string, std::string> to_string(T value)
+{
+        if constexpr (std::is_same_v<T, int> || std::is_same_v<T, float> || std::is_same_v<T, double>)
+        {
+        char buffer[buffer_size];
+        auto res = std::to_chars(buffer, buffer + buffer_size, value);
+        if (res.ec != std::errc())
+        {
+                return std::unexpected(std::make_error_code(res.ec).message());
+        }
+        return std::string(buffer, res.ptr - buffer);
+        }
+        else if constexpr (std::is_same_v<typename std::remove_const<T>::type,
+                                        char *>)
+        {
+        return std::to_string(value);
+        }
+}
+
+template <typename T = double> // requires std::is_same_v<T, std::string>
+inline std::expected<T, std::string> stoi(const std::string &str)
+{
+        T value;
+        auto res = std::from_chars(str.c_str(), str.c_str() + str.size(), value);
+        if (res.ec != std::errc())
+        {
+        return std::unexpected(std::make_error_code(res.ec).message());
+        }
+        return value;
+}
+
+    inline std::string get_time_now(){
+        auto time_now = std::chrono::system_clock::now();
+        auto now_c = std::chrono::system_clock::to_time_t(time_now);
+        char buffer[32];
+#if defined(_WIN32) || defined(_WIN64)
+        auto _ = ctime_s(buffer, 32, &now_c);
+#elif defined(__linux__)
+        auto _ = ctime_r(&now_c, buffer);
+#endif
+        auto result = std::string(buffer);
+        result = string::replace_string(result, "\n", "");
+        return std::move(result);
+    }
+
+}
+
+
+
+#endif