Added passing a function as parameter

Reviewed-on: #1

.gitignore

@@ -1,2 +1,4 @@
 build/*
 .vscode/*
+main.cpp
+main.exe

README.md

@@ -9,6 +9,7 @@ LeMA will eventually be used for graphical and machine learning usage in my othe
 - **Easy to Use**: Intuitive functions.
 - **Somewhat complete**: Supports addition, subtraction, multiplication, and more.
 - **Ready to Integrate**: Designed to work seamlessly with C++ code.
+- **Not a movie**: Is **not** about the 1999 hit movie by the Wachowski transexual sisters.
 
 ## Getting Started
 
@@ -24,7 +25,7 @@ LeMA will eventually be used for graphical and machine learning usage in my othe
    #include "matrices.h"
    ```
 
-That's it! You're ready to use Lema.
+That's it! You're ready to use LeMA.
 
 ### Example Usage
 
@@ -45,18 +46,15 @@ int main() {
 
 ```cpp
 #include "matrices.h"
-#include <iostream>
 
 int main() {
     Matrix a(2,2);
-    Matrix b(2,2);
+    a.Set(2.0F); // Fill A with 2s
     
-    a.Set(2.0F); // Fill both matrices
-    b.Set(3.0F);
+    Matrix b = a;
+    Matrix result = a + &b; // Basic operations are possible with pointers
 
-    a.Add(&b);
-
-    a.Print("A + B");
+    result.Print("A + B"); // Is full of 4s !
     return 0;
 }
 ```
@@ -65,15 +63,14 @@ int main() {
 
 ```cpp
 #include "matrices.h"
-#include <iostream>
 
 int main() {
     Matrix a(3, 3);
     Matrix b(3, 1); // Let's multiply by a vector
 
-    Matrix result = a.Multiply(&b);
+    Matrix result = a * &b;
 
-    result.Print("A x B");
+    result.Print("A x B"); // Result is a 3 by 1 vector
 
     return 0;
 }

main.cpp

@@ -1,19 +0,0 @@
-#include "matrices.h"
-// using namespace std;
-
-int main()
-{
-    srand(time(0));
-
-    Matrix a(3,2);
-    a.Randomize();
-    Matrix b = a;
-
-    a.Print("A");
-    b.Print("B");
-
-    Matrix result = a + &b;
-    result.Print("A + B");
-
-    return 0;
-}

matrices.h

@@ -16,7 +16,7 @@ class Matrix{
 
         inline Matrix Swap(const Matrix*);
 
-        inline void Multiply(float);
+        inline Matrix Multiply(float);
         inline Matrix Multiply(const Matrix*);
 
         inline void Hadamard(const Matrix*);
@@ -24,17 +24,24 @@ class Matrix{
         inline Matrix Add(float);
         inline Matrix Add(const Matrix*);
 
-        inline void Substract(float);
-        inline void Substract(const Matrix*);
+        inline Matrix Substract(float);
+        inline Matrix Substract(const Matrix*);
+
+        inline Matrix Function(float (*f)(float));
 
         inline void Print(std::string_view);
 
         inline Matrix Transpose();
 
-        // --- Operators
-        // Assign
+        // Operators
         inline Matrix operator=(const Matrix*);
         inline Matrix operator+(const Matrix*);
+        inline Matrix operator-(const Matrix*);
+        inline Matrix operator*(const Matrix*);
+
+        inline Matrix operator+(float);
+        inline Matrix operator-(float);
+        inline Matrix operator*(float);
 
         // Constructors
         inline Matrix(int, int);
@@ -49,6 +56,37 @@ Matrix Matrix::operator+(const Matrix* other){
     return this->Add(other);
 }
 
+Matrix Matrix::operator-(const Matrix* other){
+    return this->Substract(other);
+}
+
+Matrix Matrix::operator*(const Matrix* other){
+    return this->Multiply(other);
+}
+
+Matrix Matrix::operator+(float value){
+    return this->Add(value);
+}
+
+Matrix Matrix::operator-(float value){
+    return this->Substract(value);
+}
+
+Matrix Matrix::operator*(float value){
+    return this->Multiply(value);
+}
+
+Matrix Matrix::Function(float (*f)(float)){
+    Matrix result = this;
+    for(int m = 0; m < result.values.size(); m++){
+        for(int n = 0; n < result.values[m].size(); n++){
+            // Execute function on every value
+            result.values[m][n] = f(result.values[m][n]);
+        }
+    }
+    return result;
+}
+
 // Constructs a zero matrix
 Matrix::Matrix(int rows, int cols){
     for(int m = 0; m < rows; m++){
@@ -118,21 +156,26 @@ Matrix Matrix::Add(const Matrix* other){
 }
 
 // Substract 2 matrices
-void Matrix::Substract(const Matrix* other){
+Matrix Matrix::Substract(const Matrix* other){
     // Matrices need to be the same size
     assertm(this->values.size() == other->values.size() && 
         this->values[0].size() == other->values[0].size(),
         "Wrong matrix size");
-    for(int m = 0; m < this->values.size(); m++){
-        for(int n = 0; n < this->values[m].size(); n++){
-            this->values[m][n] -= other->values[m][n];
+
+    Matrix result = this;
+
+    for(int m = 0; m < result.values.size(); m++){
+        for(int n = 0; n < result.values[m].size(); n++){
+            result.values[m][n] -= other->values[m][n];
         }
     }
+
+    return result;
 }
 
 // Print a matrix in terminal, with a title
-void Matrix::Print(std::string_view titre){
-    std::cout << titre << std::endl;
+void Matrix::Print(std::string_view title){
+    std::cout << title << std::endl;
     for(int m = 0; m < values.size(); m++){
         std::cout << '|';
         for(int n = 0; n < values[m].size(); n++){
@@ -154,27 +197,34 @@ Matrix Matrix::Add(float value){
 }
 
 // Substract a constant value to every matrix case
-void Matrix::Substract(float value){
-    for(int m = 0; m < this->values.size(); m++){
-        for(int n = 0; n < this->values[m].size(); n++){
-            this->values[m][n] -= value;
+Matrix Matrix::Substract(float value){
+    Matrix result = this;
+    for(int m = 0; m < result.values.size(); m++){
+        for(int n = 0; n < result.values[m].size(); n++){
+            result.values[m][n] -= value;
         }
     }
+    return result;
 }
 
 // Multiply every matrix case by a given factor
-void Matrix::Multiply(float value){
-    for(int m = 0; m < this->values.size(); m++){
-        for(int n = 0; n < this->values[m].size(); n++){
-            this->values[m][n] *= value;
+Matrix Matrix::Multiply(float value){
+    Matrix result = this;
+    for(int m = 0; m < result.values.size(); m++){
+        for(int n = 0; n < result.values[m].size(); n++){
+            result.values[m][n] *= value;
         }
     }
+    return result;
 }
 
 // Set a matrix to a given value
 void Matrix::Set(float value){
-    this->Multiply(0.0F);
-    this->Add(value);
+    for(int m = 0; m < this->values.size(); m++){
+        for(int n = 0; n < this->values[m].size(); n++){
+            this->values[m][n] = value;
+        }
+    }
 }
 
 // Transpose a matrix