matrixmath - npm Package Compare versions

Comparing version 2.0.0 to 2.0.1

Matrix.js

@@ -47,2 +47,3 @@ /**
   this.length = this.rows * this.cols;
+  this._cache = null;
 
@@ -522,3 +523,6 @@ var setInitial = opt_setInitial === undefined ? true : opt_setInitial;
 
-  var matrixOfMinors = new Matrix(numRows, numCols);
+  // By using a cache, only the first call to invert will cause a memory increase.
+  var cache = this._cache || (this._cache = {});
+  var matrixOfMinors = cache.matrixOfMinors || (cache.matrixOfMinors = new Matrix(numRows, numCols, false));
+  var matrix = cache.tempMatrix || (cache.tempMatrix = new Matrix(this.rows, this.cols, false));
 
@@ -533,7 +537,6 @@ // Loop through each number in the matrix
       // we remove the first row and the column where the number is.
-      var matrix = new Matrix(this.rows, this.cols, false);
       var newData = this.getData();
       newData = removeRow(newData, row, this.cols);
       newData = removeColumn(newData, col, this.cols);
-      matrix.setData(newData, matrix.rows - 1, matrix.cols - 1);
+      matrix.setData(newData, this.rows - 1, this.cols - 1);
 
@@ -625,2 +628,6 @@ // Set the determinant in the correct position in the matrix of minors.
 
+    // By using a cache, only the first call to the method will cause a memory increase.
+    var cache = this._cache || (this._cache = {});
+    var matrix = cache.tempMatrix || (cache.tempMatrix = new Matrix(this.rows, this.cols, false));
+
     // Loop through each number for the first row
@@ -632,7 +639,6 @@ for (var col = 0; col < cols; col++) {
       // we remove the first row and the column where the number is.
-      var matrix = new Matrix(this.rows, this.cols, false);
       var newData = this.getData();
       newData = removeRow(newData, 0, this.cols);
       newData = removeColumn(newData, col, this.cols);
-      matrix.setData(newData, matrix.rows - 1, matrix.cols - 1);
+      matrix.setData(newData, this.rows - 1, this.cols - 1);
 
@@ -639,0 +645,0 @@ result += (col % 2 ? -1 : 1) * this[col] * matrix.getDeterminant();

package.json

 {
   "name": "matrixmath",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "author": "Johannes Koggdal <[e-mail]>",
@@ -5,0 +5,0 @@ "description": "Library for working with mathematical matrices.",

No alert changes

Improved metrics

Total package byte prevSize

53654

0.79%

Lines of code

1111

0.45%

No dependency changes