diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7bfa5e4..27e1a3b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -88,7 +88,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install wcwidth
+        # python -m pip install wcwidth
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     - name: Script
       run: |
diff --git a/graphs.cpp b/graphs.cpp
index 3ddcdb7..7297cc0 100644
--- a/graphs.cpp
+++ b/graphs.cpp
@@ -219,7 +219,7 @@ int main()
 		}
 	}
 	{
-		function<long double(long double)> afunction = [](auto x)
+		const function<long double(long double)> afunction = [](auto x)
 		{ return x + 1; };
 
 		graphs::options aoptions;
diff --git a/graphs.hpp b/graphs.hpp
index 47a40d3..dc642eb 100644
--- a/graphs.hpp
+++ b/graphs.hpp
@@ -169,7 +169,7 @@ namespace graphs
 	template <typename T>
 	constexpr size_t size(const T &array)
 	{
-		return distance(begin(array), end(array));
+		return distance(cbegin(array), cend(array));
 	}
 
 	// Number of columns needed to represent the string
@@ -203,7 +203,7 @@ namespace graphs
 			exit(1);
 		}
 
-		int width = wcswidth(wcstring, length);
+		const int width = wcswidth(wcstring, length);
 		if (width == -1)
 		{
 			cerr << "\nError! wcswidth failed. Nonprintable wide character.\n";
@@ -243,11 +243,9 @@ namespace graphs
 					++tempindex;
 				}
 
-				char temp[templinelen + 1];
-				strncpy(temp, words.data() + (index - linelen), templinelen);
-				temp[templinelen] = '\0';
+				const string temp = words.substr(index - linelen, templinelen);
 
-				size_t width = strcol(temp);
+				const size_t width = strcol(temp.c_str());
 
 				if (width >= line_length)
 				{
@@ -327,7 +325,7 @@ namespace graphs
 		if (number and anumber < 1000 and power > 0)
 		{
 			strm << setprecision(LDBL_DIG) << number;
-			string str = strm.str();
+			const string str = strm.str();
 
 			const unsigned length = 5 + (number < 0 ? 1 : 0);
 			if (str.length() > length)
@@ -358,7 +356,7 @@ namespace graphs
 		if (n <= MAX)
 		{
 			long double intpart = 0;
-			long double fractionpart = abs(modf(number, &intpart));
+			const long double fractionpart = abs(modf(number, &intpart));
 
 			for (size_t i = 0; i < graphs::size(fractions) and !output; ++i)
 			{
@@ -442,7 +440,7 @@ namespace graphs
 			break;
 		}
 
-		size_t length = strcol(strm.str().c_str());
+		const size_t length = strcol(strm.str().c_str());
 
 		return length;
 	}
@@ -542,7 +540,7 @@ namespace graphs
 			{
 				bool output = false;
 				long double label = 0;
-				int adivisor = i < yaxis ? -ydivisor : ydivisor;
+				const int adivisor = i < yaxis ? -ydivisor : ydivisor;
 
 				for (long double k = yaxis + adivisor; (i < yaxis ? k >= i : k < (i + ai)) and i >= ai and !output; k += adivisor)
 				{
@@ -592,7 +590,7 @@ namespace graphs
 						}
 						else if (axistick)
 						{
-							int adivisor = i < yaxis ? -ydivisor : ydivisor;
+							const int adivisor = i < yaxis ? -ydivisor : ydivisor;
 
 							for (long double k = yaxis + adivisor; (i < yaxis ? k >= i : k < (i + ai)) and i >= ai and !output; k += adivisor)
 							{
@@ -623,7 +621,7 @@ namespace graphs
 						}
 						else if (axistick)
 						{
-							int adivisor = j < xaxis ? -xdivisor : xdivisor;
+							const int adivisor = j < xaxis ? -xdivisor : xdivisor;
 
 							for (long double k = xaxis + adivisor; (j < xaxis ? k >= j : k < (j + aj)) and j < (width - (aj * 2)) and !output; k += adivisor)
 							{
@@ -653,7 +651,7 @@ namespace graphs
 					else if (yaxislabel and axistick and axisunitslabel)
 					{
 						long double label = 0;
-						int adivisor = j < xaxis ? -xdivisor : xdivisor;
+						const int adivisor = j < xaxis ? -xdivisor : xdivisor;
 						if (j < xaxis)
 							j += aj;
 
@@ -768,7 +766,7 @@ namespace graphs
 			cout << astyle[10];
 		}
 
-		cout << endl;
+		cout << '\n';
 
 		return 0;
 	}
@@ -891,8 +889,8 @@ namespace graphs
 		if (!graphs::size(arrays))
 			return 1;
 
-		if (!all_of(begin(arrays), end(arrays), [](const auto &array)
-					{ return all_of(begin(array), end(array), [](const auto &x)
+		if (!all_of(cbegin(arrays), cend(arrays), [](const auto &array)
+					{ return all_of(cbegin(array), cend(array), [](const auto &x)
 									{ return graphs::size(x) == 2; }); }))
 		{
 			cerr << "Error: The arrays must have two columns.\n";
@@ -1094,7 +1092,7 @@ namespace graphs
 
 		for (size_t j = 0; j < numfunctions; ++j)
 		{
-			unsigned short acolor = numfunctions == 1 ? color + 1 : (j % (graphs::size(colors) - 2)) + 3;
+			const unsigned short acolor = numfunctions == 1 ? color + 1 : (j % (graphs::size(colors) - 2)) + 3;
 
 			for (size_t i = 0; i < rows * xres; ++i)
 			{
diff --git a/python/README.md b/python/README.md
index 9276a1f..bd87afd 100644
--- a/python/README.md
+++ b/python/README.md
@@ -25,7 +25,7 @@
 
 ### Usage
 
-Requires Python 3.6 or greater and the [wcwidth library](https://pypi.org/project/wcwidth/), which users can install with:
+Requires Python 3.6 or greater and if not on Linux or macOS, the [wcwidth library](https://pypi.org/project/wcwidth/), which users can install with:
 ```bash
 pip3 install wcwidth
 # or
@@ -247,7 +247,7 @@ Check that the width of the table is not greater then the width of the terminal.
 
 ### Usage
 
-Requires Python 3.6 or greater and the [wcwidth library](https://pypi.org/project/wcwidth/), which users can install with:
+Requires Python 3.6 or greater and if not on Linux or macOS, the [wcwidth library](https://pypi.org/project/wcwidth/), which users can install with:
 ```bash
 pip3 install wcwidth
 # or
diff --git a/python/graphs.py b/python/graphs.py
index ad4947c..2eddce3 100644
--- a/python/graphs.py
+++ b/python/graphs.py
@@ -12,7 +12,20 @@ from enum import Enum, IntEnum, auto
 from fractions import Fraction
 from typing import Callable, List, Optional, Sequence, Tuple
 
-from wcwidth import wcswidth
+if sys.platform != "win32":
+	import ctypes
+	from ctypes.util import find_library
+
+	libc = ctypes.CDLL(find_library("c"))
+	libc.wcwidth.argtypes = (ctypes.c_wchar,)
+	libc.wcwidth.restype = ctypes.c_int
+	libc.wcswidth.argtypes = (ctypes.c_wchar_p, ctypes.c_int)
+	libc.wcswidth.restype = ctypes.c_int
+
+	def wcswidth(astr: str) -> int:
+		return libc.wcswidth(astr, len(astr))
+else:
+	from wcwidth import wcswidth
 
 locale.setlocale(locale.LC_ALL, "")
 
@@ -28,17 +41,17 @@ class style_types(IntEnum):
 	heavy_dashed = auto()
 
 
-styles = [
-	["-", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"],  # ASCII
-	["—", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"],  # Basic
-	["─", "│", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"],  # Light
-	["━", "┃", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛"],  # Heavy
-	["═", "║", "╔", "╦", "╗", "╠", "╬", "╣", "╚", "╩", "╝"],  # Double
-	["─", "│", "╭", "┬", "╮", "├", "┼", "┤", "╰", "┴", "╯"],  # Light Arc
-	["╌", "┊", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"],  # Light Dashed
-	["╍", "┋", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛"]  # Heavy Dashed
-	# [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "]] #No border
-]
+styles = (
+	("-", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"),  # ASCII
+	("—", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"),  # Basic
+	("─", "│", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"),  # Light
+	("━", "┃", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛"),  # Heavy
+	("═", "║", "╔", "╦", "╗", "╠", "╬", "╣", "╚", "╩", "╝"),  # Double
+	("─", "│", "╭", "┬", "╮", "├", "┼", "┤", "╰", "┴", "╯"),  # Light Arc
+	("╌", "┊", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"),  # Light Dashed
+	("╍", "┋", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛")  # Heavy Dashed
+	# (" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ")) #No border
+)
 
 
 class color_types(IntEnum):
@@ -61,12 +74,12 @@ class color_types(IntEnum):
 	white = auto()
 
 
-colors = ["\033[39m", "\033[30m", "\033[31m", "\033[32m", "\033[33m",
+colors = ("\033[39m", "\033[30m", "\033[31m", "\033[32m", "\033[33m",
 		  "\033[34m", "\033[35m", "\033[36m", "\033[37m", "\033[90m",
 		  "\033[91m", "\033[92m", "\033[93m", "\033[94m", "\033[95m",
-		  "\033[96m", "\033[97m"]
+		  "\033[96m", "\033[97m")
 
-dots = [
+dots = (
 	"⠀", "⠁", "⠂", "⠃", "⠄", "⠅", "⠆", "⠇", "⠈", "⠉", "⠊", "⠋", "⠌", "⠍", "⠎",
 	"⠏", "⠐", "⠑", "⠒", "⠓", "⠔", "⠕", "⠖", "⠗", "⠘", "⠙", "⠚", "⠛", "⠜", "⠝",
 	"⠞", "⠟", "⠠", "⠡", "⠢", "⠣", "⠤", "⠥", "⠦", "⠧", "⠨", "⠩", "⠪", "⠫", "⠬",
@@ -84,14 +97,14 @@ dots = [
 	"⣒", "⣓", "⣔", "⣕", "⣖", "⣗", "⣘", "⣙", "⣚", "⣛", "⣜", "⣝", "⣞", "⣟", "⣠",
 	"⣡", "⣢", "⣣", "⣤", "⣥", "⣦", "⣧", "⣨", "⣩", "⣪", "⣫", "⣬", "⣭", "⣮", "⣯",
 	"⣰", "⣱", "⣲", "⣳", "⣴", "⣵", "⣶", "⣷", "⣸", "⣹", "⣺", "⣻", "⣼", "⣽", "⣾",
-	"⣿"]
-dotvalues = [[0x1, 0x2, 0x4, 0x40], [0x8, 0x10, 0x20, 0x80]]
+	"⣿")
+dotvalues = ((0x1, 0x2, 0x4, 0x40), (0x8, 0x10, 0x20, 0x80))
 
-blocks = [" ", "▖", "▗", "▄", "▘", "▌", "▚",
-		  "▙", "▝", "▞", "▐", "▟", "▀", "▛", "▜", "█"]
-blockvalues = [[4, 1], [8, 2]]
+blocks = (" ", "▖", "▗", "▄", "▘", "▌", "▚",
+		  "▙", "▝", "▞", "▐", "▟", "▀", "▛", "▜", "█")
+blockvalues = ((4, 1), (8, 2))
 
-bars = [" ", "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█"]
+bars = (" ", "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█")
 
 
 class type_types(IntEnum):
@@ -101,8 +114,8 @@ class type_types(IntEnum):
 
 atype_types = (type_types.braille, type_types.block)
 
-marks = [[[0, 0]], [[0, 1], [-1, 0], [0, 0], [1, 0], [0, -1]],
-		 [[-1, 1], [0, 1], [1, 1], [-1, 0], [1, 0], [-1, -1], [0, -1], [1, -1]]]
+marks = (((0, 0),), ((0, 1), (-1, 0), (0, 0), (1, 0), (0, -1)),
+		 ((-1, 1), (0, 1), (1, 1), (-1, 0), (1, 0), (-1, -1), (0, -1), (1, -1)))
 
 
 class mark_types(IntEnum):
@@ -151,7 +164,7 @@ class units_types(Enum):
 	monetary = auto()
 
 
-suffix_power_char = ["", "K", "M", "G", "T", "P", "E", "Z", "Y", "R", "Q"]
+suffix_power_char = ("", "K", "M", "G", "T", "P", "E", "Z", "Y", "R", "Q")
 
 MAX = sys.float_info.radix ** sys.float_info.mant_dig - 1
 
@@ -209,6 +222,7 @@ def outputunit(number: float, scale: units_types) -> str:
 	else:
 		strm = locale.format_string("%.0f", number, grouping=True)
 
+	# "k" if power == 1 and scale == scale_SI else
 	strm += suffix_power_char[power] if power < len(
 		suffix_power_char) else "(error)"
 
diff --git a/python/tables.py b/python/tables.py
index 040566f..fa9617f 100644
--- a/python/tables.py
+++ b/python/tables.py
@@ -10,7 +10,20 @@ import textwrap
 from enum import IntEnum, auto
 from typing import Any, Callable, List, Optional, Sequence
 
-from wcwidth import wcswidth
+if sys.platform != "win32":
+	import ctypes
+	from ctypes.util import find_library
+
+	libc = ctypes.CDLL(find_library("c"))
+	libc.wcwidth.argtypes = (ctypes.c_wchar,)
+	libc.wcwidth.restype = ctypes.c_int
+	libc.wcswidth.argtypes = (ctypes.c_wchar_p, ctypes.c_int)
+	libc.wcswidth.restype = ctypes.c_int
+
+	def wcswidth(astr: str) -> int:
+		return libc.wcswidth(astr, len(astr))
+else:
+	from wcwidth import wcswidth
 
 locale.setlocale(locale.LC_ALL, "")
 
@@ -26,17 +39,17 @@ class style_types(IntEnum):
 	heavy_dashed = auto()
 
 
-styles = [
-	["-", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"],  # ASCII
-	["—", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"],  # Basic
-	["─", "│", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"],  # Light
-	["━", "┃", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛"],  # Heavy
-	["═", "║", "╔", "╦", "╗", "╠", "╬", "╣", "╚", "╩", "╝"],  # Double
-	["─", "│", "╭", "┬", "╮", "├", "┼", "┤", "╰", "┴", "╯"],  # Light Arc
-	["╌", "┊", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"],  # Light Dashed
-	["╍", "┋", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛"]  # Heavy Dashed
-	# [" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "]] #No border
-]
+styles = (
+	("-", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"),  # ASCII
+	("—", "|", "+", "+", "+", "+", "+", "+", "+", "+", "+"),  # Basic
+	("─", "│", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"),  # Light
+	("━", "┃", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛"),  # Heavy
+	("═", "║", "╔", "╦", "╗", "╠", "╬", "╣", "╚", "╩", "╝"),  # Double
+	("─", "│", "╭", "┬", "╮", "├", "┼", "┤", "╰", "┴", "╯"),  # Light Arc
+	("╌", "┊", "┌", "┬", "┐", "├", "┼", "┤", "└", "┴", "┘"),  # Light Dashed
+	("╍", "┋", "┏", "┳", "┓", "┣", "╋", "┫", "┗", "┻", "┛")  # Heavy Dashed
+	# (" ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ")) #No border
+)
 
 ansi = re.compile(r"\x1B\[(?:[0-9]+(?:;[0-9]+)*)?m")
 
diff --git a/tables.cpp b/tables.cpp
index 84625af..c768b6b 100644
--- a/tables.cpp
+++ b/tables.cpp
@@ -521,7 +521,7 @@ int main()
 		}
 	}
 	{
-		function<long double(long double)> afunction = [](auto x)
+		const function<long double(long double)> afunction = [](auto x)
 		{ return x + 1; };
 
 		tables::options aoptions;
diff --git a/tables.hpp b/tables.hpp
index e051951..fb4255d 100644
--- a/tables.hpp
+++ b/tables.hpp
@@ -65,7 +65,7 @@ namespace tables
 	template <typename T>
 	constexpr size_t size(const T &array)
 	{
-		return distance(begin(array), end(array));
+		return distance(cbegin(array), cend(array));
 	}
 
 	// Number of columns needed to represent the string
@@ -102,7 +102,7 @@ namespace tables
 			exit(1);
 		}
 
-		int width = wcswidth(wcstring, length);
+		const int width = wcswidth(wcstring, length);
 		if (width == -1)
 		{
 			cerr << "\nError! wcswidth failed. Nonprintable wide character.\n";
@@ -142,11 +142,9 @@ namespace tables
 					++tempindex;
 				}
 
-				char temp[templinelen + 1];
-				strncpy(temp, words.data() + (index - linelen), templinelen);
-				temp[templinelen] = '\0';
+				const string temp = words.substr(index - linelen, templinelen);
 
-				size_t width = strcol(temp);
+				const size_t width = strcol(temp.c_str());
 
 				if (width >= line_length)
 				{
@@ -183,9 +181,7 @@ namespace tables
 		const size_t rows = array.size();
 		const size_t columns = array[0].size();
 
-		int columnwidth[columns];
-		for (size_t j = 0; j < columns; ++j)
-			columnwidth[j] = 0;
+		vector<int> columnwidth(columns);
 
 		setlocale(LC_ALL, "");
 
@@ -202,7 +198,7 @@ namespace tables
 		struct winsize w;
 		ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
 
-		size_t width = accumulate(columnwidth, columnwidth + columns, 0ul);
+		size_t width = accumulate(columnwidth.cbegin(), columnwidth.cend(), 0ul);
 
 		if (tableborder or cellborder or headerrow or headercolumn)
 			width += (((2 * padding) + 1) * columns) + (tableborder ? 1 : -1);
@@ -344,7 +340,7 @@ namespace tables
 			cout << astyle[10];
 		}
 
-		cout << endl;
+		cout << '\n';
 
 		return 0;
 	}
@@ -362,7 +358,7 @@ namespace tables
 		size_t rows = tables::size(aarray);
 		size_t columns = tables::size(aarray[0]);
 
-		if (!all_of(begin(aarray), end(aarray), [columns](const auto &x)
+		if (!all_of(cbegin(aarray), cend(aarray), [&columns](const auto &x)
 					{ return tables::size(x) == columns; }))
 		{
 			cerr << "Error: The rows of the array must have the same number of columns.\n";
@@ -520,7 +516,7 @@ namespace tables
 				aarray[i][j + 1] = (functions[j])(aarray[i][0]);
 		}
 
-		int code = array(aarray, headerrow, headercolumn, aoptions);
+		const int code = array(aarray, headerrow, headercolumn, aoptions);
 
 		if (headerrow)
 		{