JQuery: What is the difference between these two statements?

Question

Any difference between these two statements?

$(document).ready(function() {
    // Code
});

$(function() { 
    // Code
});

Answer 1

In resolution, there is no difference, they are equivalent

From the relevant source code

jQuery = window.jQuery = window.$ = function( selector, context ) {
    // The jQuery object is actually just the init constructor 'enhanced'
    return new jQuery.fn.init( selector, context );
}

jQuery.fn = jQuery.prototype = {
init: function( selector, context ) {

    /* .... irrelevant code.... */

    // HANDLE: $(function)
    // Shortcut for document ready
    else if ( jQuery.isFunction( selector ) )
        return jQuery( document ).ready( selector );     
   }
}

Answer 2

If you mean

$(document).ready(function() {/* code here */});

and

$(function() {/* code here */});

then there is no difference between the two. The latter is just a shortcut that does the same thing as the former.