Advanced features
=================

Import statement
----------------

Hurdy includes a Python-like import statement, which can be used to quickly declare and assign
local variables from the entries of a table:

.. code-block:: hurdy

  from expr import x, y, test

is equivalent to

.. code-block:: hurdy

  var _hurdytemp1 = expr -- number of the temporary variable is incremented each time
  var x = _hurdytemp1.x
  var y = _hurdytemp1.y
  var test = _hurdytemp1.test

:code:`expr` need not be a variable name, but can be more generally an expression (function call, table indexing, etc.).
The following are all valid uses of the statement:

.. code-block:: hurdy

  from x import x, y
  from require("library") import x, y
  from t.subtable import x, y
  from a + b import x, y -- allowed, but needs methametods for it to make sense
  from nil import x, y -- technically allowed, but doesn't make sense

The variable names can optionally be changed with the extended version of the command

.. code-block:: hurdy

  from expr import x, y, test as z, w, test

  -- names must be provided for all entries

which is equivalent to

.. code-block:: hurdy

  var _hurdytemp1 = expr 
  var z = _hurdytemp1.x
  var w = _hurdytemp1.y
  var test = _hurdytemp1.test