constructor
======================

.. js:function:: ArrayView.constructor() 

ソース
^^^^^^

.. code-block:: js

        constructor() {
            var args;
    
            if (arguments.length == 1 && Array.isArray(arguments[0])) {
    
                args = arguments[0];
            }
            else {
    
                // 引数のリストをArrayに変換します。
                args = Array.prototype.slice.call(arguments);
            }
    
            // 引数の最後
            var last_arg = args[args.length - 1];
            if (typeof last_arg != 'number') {
                // 引数の最後が数値でない場合
    
                if (typeof last_arg == 'ArrayView') {
    
                    this.dt = new Float32Array(last_arg.dt);
                }
                else {
    
                    Assert(last_arg instanceof Float32Array, "is Float32Array");
                    this.dt = last_arg;
                }
    
                args.pop();
            }
    
            this.shape = args;
    
            this.ncol = this.shape[this.shape.length - 1];
            if (this.shape.length == 1) {
    
                this.nrow = 1;
            }
            else {
    
                this.nrow = this.shape[this.shape.length - 2];
            }
    
            if (!this.dt) {
                this.dt = new Float32Array(this.shape.reduce((x, y) => x * y));
            }
        }