Merge branch 'master' into pr/438

This commit is contained in:
Nicolas Dandrimont 2014-01-17 20:14:16 +01:00
commit e0f9c9c191
5 changed files with 40 additions and 28 deletions

View File

@ -36,3 +36,4 @@
* Tuukka Turto <tuukka.turto@oktaeder.net>
* Vasudev Kamath <kamathvasudev@gmail.com>
* Yuval Langer <yuval.langer@gmail.com>
* Fatih Kadir Akın <fka@fatihak.in>

Binary file not shown.

After

Width:  |  Height:  |  Size: 37 KiB

BIN
docs/_static/cuddles-transparent.png vendored Normal file

Binary file not shown.

After

Width:  |  Height:  |  Size: 46 KiB

View File

@ -2,20 +2,20 @@
Quickstart
==========
.. image:: _static/cuddles.png
.. image:: _static/cuddles-transparent-small.png
:alt: Karen Rustard's Cuddles
(thanks to Karen Rustad for Cuddles!)
(Thanks to Karen Rustad for Cuddles!)
HOW TO GET HY REAL FAST:
**HOW TO GET HY REAL FAST**:
1. create a `Python virtual environment
1. Create a `Virtual Python Environment
<https://pypi.python.org/pypi/virtualenv>`_
2. activate your Python virtual environment
3. ``pip install hy``
4. start a REPL with ``hy``
5. type stuff in the REPL::
2. Activate your Virtual Python Environment
3. Install `hy from PyPI <https://pypi.python.org/pypi/hy>`_ with ``pip install hy``
4. Start a REPL with ``hy``
5. Type stuff in the REPL::
=> (print "Hy!")
Hy!
@ -25,20 +25,19 @@ HOW TO GET HY REAL FAST:
etc
6. hit CTRL-D when you're done
6. Hit CTRL-D when you're done
OMG! That's amazing! I want to write a hy program.
7. open up an elite programming editor
8. type::
7. Open up an elite programming editor and type::
(print "i was going to code in python syntax, but then i got hy")
(print "I was going to code in python syntax, but then I got hy.")
9. save as ``test_program_of_awesome.hy``
10. run::
8. Save as ``awesome.hy``
9. And run your first Hy program::
hy test_program_of_awesome.hy
hy awesome.hy
11. take a deep breath so as to not hyperventilate
12. smile villainously and sneak off to your hydeaway and do
10. Take a deep breath so as to not hyperventilate
11. Smile villainously and sneak off to your hydeaway and do
unspeakable things

View File

@ -1,6 +1,7 @@
;;; Hy tail-call optimization
;;
;; Copyright (c) 2014 Clinton Dreisbach <clinton@dreisbach.us>
;; Copyright (c) 2014 Paul R. Tagliamonte <tag@pault.ag>
;;
;; Permission is hereby granted, free of charge, to any person obtaining a
;; copy of this software and associated documentation files (the "Software"),
@ -55,7 +56,24 @@
(recursive-replace old-term new-term term)]
[True term]) [term body])))
(defmacro loop [bindings &rest body]
(defmacro/g! fnr [signature &rest body]
(let [[new-body (recursive-replace 'recur g!recur-fn body)]]
`(do
(import [hy.contrib.loop [--trampoline--]])
(with-decorator
--trampoline--
(def ~g!recur-fn (fn [~@signature] ~@new-body)))
~g!recur-fn)))
(defmacro defnr [name lambda-list &rest body]
(if (not (= (type name) HySymbol))
(macro-error name "defnr takes a name as first argument"))
`(setv ~name (fnr ~lambda-list ~@body)))
(defmacro/g! loop [bindings &rest body]
;; Use inside functions like so:
;; (defun factorial [n]
;; (loop [[i n]
@ -67,13 +85,7 @@
;; If recur is used in a non-tail-call position, None is returned, which
;; causes chaos. Fixing this to detect if recur is in a tail-call position
;; and erroring if not is a giant TODO.
(with-gensyms [recur-fn]
(let [[fnargs (map (fn [x] (first x)) bindings)]
[initargs (map second bindings)]
[new-body (recursive-replace 'recur recur-fn body)]]
`(do
(import [hy.contrib.loop [--trampoline--]])
(def ~recur-fn
(--trampoline-- (fn [~@fnargs]
~@new-body)))
(~recur-fn ~@initargs)))))
(let [[fnargs (map (fn [x] (first x)) bindings)]
[initargs (map second bindings)]]
`(do (defnr ~g!recur-fn [~@fnargs] ~@body)
(~g!recur-fn ~@initargs))))