refactor: use generalized utility

---
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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/nullary-tiling-block-size/README.md

@@ -75,19 +75,15 @@ var bsize = nullaryBlockSize( 'float64' );
 
 ```javascript
 var dtypes = require( '@stdlib/ndarray/dtypes' );
+var logEachMap = require( '@stdlib/console/log-each-map' );
 var nullaryBlockSize = require( '@stdlib/ndarray/base/nullary-tiling-block-size' );
 
 // Get the list of ndarray dtypes:
 var dt = dtypes();
 
-// Resolve the block size for each dtype...
-var b;
-var i;
+// Resolve the block size for each dtype:
 console.log( 'block_size, xdtype' );
-for ( i = 0; i < dt.length; i++ ) {
-    b = nullaryBlockSize( dt[ i ] );
-    console.log( '%d, %s', b, dt[ i ] );
-}
+logEachMap( '%d, %s', dt, nullaryBlockSize );
 ```
 
 </section>

lib/node_modules/@stdlib/ndarray/base/nullary-tiling-block-size/examples/index.js

@@ -19,16 +19,12 @@
 'use strict';
 
 var dtypes = require( '@stdlib/ndarray/dtypes' );
+var logEachMap = require( '@stdlib/console/log-each-map' );
 var nullaryBlockSize = require( './../lib' );
 
 // Get the list of ndarray dtypes:
 var dt = dtypes();
 
-// Resolve the block size for each dtype...
-var b;
-var i;
+// Resolve the block size for each dtype:
 console.log( 'block_size, xdtype' );
-for ( i = 0; i < dt.length; i++ ) {
-	b = nullaryBlockSize( dt[ i ] );
-	console.log( '%d, %s', b, dt[ i ] );
-}
+logEachMap( '%d, %s', dt, nullaryBlockSize );

lib/node_modules/@stdlib/ndarray/base/nullary-tiling-block-size/lib/defaults.js

@@ -20,8 +20,7 @@
 
 // MODULES //
 
-var bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' );
-var defaults = require( './defaults.js' );
+var blockSize = require( '@stdlib/ndarray/base/tiling-block-size' );
 
 
 // MAIN //
@@ -37,11 +36,7 @@ var defaults = require( './defaults.js' );
 * // returns <number>
 */
 function nullaryBlockSize( dtypeX ) {
-	var nbx = bytesPerElement( dtypeX );
-	if ( nbx === null ) { // e.g., "generic" arrays
-		return defaults.BLOCK_SIZE_IN_ELEMENTS;
-	}
-	return ( defaults.BLOCK_SIZE_IN_BYTES/nbx )|0; // asm type annotation
+	return blockSize( [ dtypeX ] );
 }