code: function isFunction$4(value) {
  	  // The use of `Object#toString` avoids issues with the `typeof` operator
  	  // in Safari 8-9 which returns 'object' for typed array and other constructors.
  	  var tag = isObject$4(value) ? objectToString$6.call(value) : '';
  	  return tag == funcTag$4 || tag == genTag$4;
  	}
docs: Checks if `value` is classified as a `Function` object.
  
  @static
  @memberOf _
  @since 0.1.0
  @category Lang
  @param {*} value The value to check.
  @returns {boolean} Returns `true` if `value` is a function, else `false`.
  @example
  
  _.isFunction(_);
  // => true
  
  _.isFunction(/abc/);
  // => false