std_tools 0.1.4

Collection of general purpose tools for solving problems. Fundamentally extend the language without spoiling, so may be used solely or in conjunction with another module of such kind.
Documentation 
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'use strict'

if( typeof module !== 'undefined' )
require( 'wTools' );
let _ = wTools;


/* array, imperative form */

var dst = [ 1, 2, 3 ];
var src = [ 4, 5, 6, 7 ];

Object.preventExtensions( dst );

try
{
  for( let i = 0; i < src.length; i++ )
  dst[ i ] = src[ i ];
}
catch( e )
{
  console.log( e ); // log error
}
console.log( dst ); // log [ 4, 5, 6 ]

/* array, object assigning */

var dst = [ 1, 2, 3 ];
var src = [ 4, 5, 6, 7 ];

Object.preventExtensions( dst );

try
{
  Object.assign( dst, src );
}
catch( e )
{
  console.log( e ); // log error
}

console.log( dst ); // log [ 4, 5, 6 ]

/* array, extendReplacing with check of length and check of extension possibility */

var dst = [ 1, 2, 3 ];
var src = [ 4, 5, 6, 7 ];

Object.preventExtensions( dst );

try
{
  _.container.extendReplacing( dst, src )
}
catch( e )
{
  console.log( e ); // log error
}

console.log( dst ); // log [ 1, 2, 3 ]