refactor: reduce code duplication

Author: kgryte

Diff for: lib/node_modules/@stdlib/strided/base/unary-by/lib/accessors.js

@@ -18,6 +18,12 @@
 
 'use strict';
 
+// MODULES //
+
+var stride2offset = require( '@stdlib/strided/base/stride2offset' );
+var ndarray = require( './accessors.ndarray.js' );
+
+
 // MAIN //
 
 /**
@@ -60,46 +66,15 @@
 * // => [ 2.0, 4.0, 6.0, 8.0, 10.0 ]
 */
 function unaryBy( arrays, shape, strides, accessors, fcn, clbk, thisArg ) {
-	var xget;
-	var yset;
-	var sx;
-	var sy;
-	var ix;
-	var iy;
-	var x;
-	var y;
+	var offsets;
 	var N;
-	var v;
-	var i;
 
 	N = shape[ 0 ];
-	if ( N <= 0 ) {
-		return;
-	}
-	sx = strides[ 0 ];
-	sy = strides[ 1 ];
-	if ( sx < 0 ) {
-		ix = (1-N) * sx;
-	} else {
-		ix = 0;
-	}
-	if ( sy < 0 ) {
-		iy = (1-N) * sy;
-	} else {
-		iy = 0;
-	}
-	x = arrays[ 0 ];
-	y = arrays[ 1 ];
-	xget = accessors[ 0 ];
-	yset = accessors[ 1 ];
-	for ( i = 0; i < N; i++ ) {
-		v = clbk.call( thisArg, xget( x, ix ), i, [ ix, iy ], [ x, y ] );
-		if ( v !== void 0 ) {
-			yset( y, iy, fcn( v ) );
-		}
-		ix += sx;
-		iy += sy;
-	}
+	offsets = [
+		stride2offset( N, strides[ 0 ] ),
+		stride2offset( N, strides[ 1 ] )
+	];
+	return ndarray( arrays, shape, strides, offsets, accessors, fcn, clbk, thisArg );
 }
 
 

Diff for: lib/node_modules/@stdlib/strided/base/unary-by/lib/unary.js

@@ -18,6 +18,12 @@
 
 'use strict';
 
+// MODULES //
+
+var stride2offset = require( '@stdlib/strided/base/stride2offset' );
+var ndarray = require( './unary.ndarray.js' );
+
+
 // MAIN //
 
 /**
@@ -51,42 +57,15 @@
 * // => [ 2.0, 4.0, 6.0, 8.0, 10.0 ]
 */
 function unaryBy( arrays, shape, strides, fcn, clbk, thisArg ) {
-	var sx;
-	var sy;
-	var ix;
-	var iy;
-	var x;
-	var y;
+	var offsets;
 	var N;
-	var v;
-	var i;
 
 	N = shape[ 0 ];
-	if ( N <= 0 ) {
-		return;
-	}
-	sx = strides[ 0 ];
-	sy = strides[ 1 ];
-	if ( sx < 0 ) {
-		ix = (1-N) * sx;
-	} else {
-		ix = 0;
-	}
-	if ( sy < 0 ) {
-		iy = (1-N) * sy;
-	} else {
-		iy = 0;
-	}
-	x = arrays[ 0 ];
-	y = arrays[ 1 ];
-	for ( i = 0; i < N; i++ ) {
-		v = clbk.call( thisArg, x[ ix ], i, [ ix, iy ], [ x, y ] );
-		if ( v !== void 0 ) {
-			y[ iy ] = fcn( v );
-		}
-		ix += sx;
-		iy += sy;
-	}
+	offsets = [
+		stride2offset( N, strides[ 0 ] ),
+		stride2offset( N, strides[ 1 ] )
+	];
+	return ndarray( arrays, shape, strides, offsets, fcn, clbk, thisArg );
 }