refactor: reduce code duplication

Author: kgryte

lib/node_modules/@stdlib/strided/base/map-by2/lib/accessors.js

@@ -18,6 +18,12 @@
 
 'use strict';
 
+// MODULES //
+
+var stride2offset = require( '@stdlib/strided/base/stride2offset' );
+var ndarray = require( './accessors.ndarray.js' );
+
+
 // MAIN //
 
 /**
@@ -64,44 +70,7 @@
 * // => [ 4.0, 0.0, 12.0, 0.0, 20.0 ]
 */
 function mapBy2( N, x, strideX, xget, y, strideY, yget, z, strideZ, zset, fcn, clbk, thisArg ) { // eslint-disable-line max-len, max-params
-	var args;
-	var o;
-	var a;
-	var v;
-	var i;
-	if ( N <= 0 ) {
-		return z;
-	}
-	o = [ 0, 0, 0 ];
-	if ( strideX < 0 ) {
-		o[ 0 ] = (1-N) * strideX;
-	} else {
-		o[ 0 ] = 0;
-	}
-	if ( strideY < 0 ) {
-		o[ 1 ] = (1-N) * strideY;
-	} else {
-		o[ 1 ] = 0;
-	}
-	if ( strideZ < 0 ) {
-		o[ 2 ] = (1-N) * strideZ;
-	} else {
-		o[ 2 ] = 0;
-	}
-	a = [ x, y, z ];
-	args = [ 0, 0 ];
-	for ( i = 0; i < N; i++ ) {
-		args[ 0 ] = xget( x, o[ 0 ] );
-		args[ 1 ] = yget( y, o[ 1 ] );
-		v = clbk.call( thisArg, args, i, o, a );
-		if ( v !== void 0 ) {
-			zset( z, o[ 2 ], fcn( v[ 0 ], v[ 1 ] ) );
-		}
-		o[ 0 ] += strideX;
-		o[ 1 ] += strideY;
-		o[ 2 ] += strideZ;
-	}
-	return z;
+	return ndarray( N, x, strideX, stride2offset( N, strideX ), xget, y, strideY, stride2offset( N, strideY ), yget, z, strideZ, stride2offset( N, strideZ ), zset, fcn, clbk, thisArg ); // eslint-disable-line max-len
 }
 
 

lib/node_modules/@stdlib/strided/base/map-by2/lib/map.js

@@ -18,6 +18,12 @@
 
 'use strict';
 
+// MODULES //
+
+var stride2offset = require( '@stdlib/strided/base/stride2offset' );
+var ndarray = require( './map.ndarray.js' );
+
+
 // MAIN //
 
 /**
@@ -55,44 +61,7 @@
 * // => [ 4.0, 0.0, 12.0, 0.0, 20.0 ]
 */
 function mapBy2( N, x, strideX, y, strideY, z, strideZ, fcn, clbk, thisArg ) {
-	var args;
-	var o;
-	var a;
-	var v;
-	var i;
-	if ( N <= 0 ) {
-		return z;
-	}
-	o = [ 0, 0, 0 ];
-	if ( strideX < 0 ) {
-		o[ 0 ] = (1-N) * strideX;
-	} else {
-		o[ 0 ] = 0;
-	}
-	if ( strideY < 0 ) {
-		o[ 1 ] = (1-N) * strideY;
-	} else {
-		o[ 1 ] = 0;
-	}
-	if ( strideZ < 0 ) {
-		o[ 2 ] = (1-N) * strideZ;
-	} else {
-		o[ 2 ] = 0;
-	}
-	a = [ x, y, z ];
-	args = [ 0, 0 ];
-	for ( i = 0; i < N; i++ ) {
-		args[ 0 ] = x[ o[0] ];
-		args[ 1 ] = y[ o[1] ];
-		v = clbk.call( thisArg, args, i, o, a );
-		if ( v !== void 0 ) {
-			z[ o[2] ] = fcn( v[ 0 ], v[ 1 ] );
-		}
-		o[ 0 ] += strideX;
-		o[ 1 ] += strideY;
-		o[ 2 ] += strideZ;
-	}
-	return z;
+	return ndarray( N, x, strideX, stride2offset( N, strideX ), y, strideY, stride2offset( N, strideY ), z, strideZ, stride2offset( N, strideZ ), fcn, clbk, thisArg ); // eslint-disable-line max-len
 }