On Dec 20, 2012, at 8:55 PM, Seth Chandler wrote:
> but in dealing with file locations, dependency management, projects,
> Leiningen, all of which are -- with due respect -- very difficult,
> particularly for people not coming from an Eclipse or similar background.
In my book, I decided to ha
On Dec 11, 2012, at 5:42 PM, Phil Hagelberg wrote:
> Henry Baker's "Equal Rights for Functional Objects" paper:
> http://home.pipeline.com/~hbaker1/ObjectIdentity.html
Henry Baker was/is a brilliantly just-outside-of-the-box thinker. Many of the
papers at http://home.pipeline.com/~hbaker1 are
On Dec 11, 2012, at 4:45 PM, Nando wrote:
> Thanks! I bought and started reading your book. Seems excellent so far, and
> wanted to say that I particularly appreciate your stated willingness to help
> those of us with no experience in functional programming.
I'm pleased to hear that.
--
On Dec 11, 2012, at 1:04 PM, Brian Marick wrote:
> If you want to "edit" trees, using zippers is often much much easier than
> collection functions. I find the code easier to understand, too.
I almost forgot to make a shameless plug for /Functional Programming for the
On Dec 11, 2012, at 12:48 PM, larry google groups
wrote:
>
> I am sorry for the dumb question, but zippers are for looping over nested
> collections, yes? Why can't I just use get-in for that? When would I need a
> zipper?
If you want to "edit" trees, using zippers is often much much easier
On Dec 11, 2012, at 12:38 PM, Timothy Baldridge wrote:
> For a project I'm working on it would be awesome to have my tests auto-rerun
> after every file change. I know lazy test exists, but it doesn't work with
> Lein2 it seems.
(defproject ...
:profiles {:dev {:dependencies [[midje "1.4.0
sed to adjust
> that value to something else.
>
> https://github.com/MichaelDrogalis/zombie
>
> In any case, drop the link here when you find the talk. We should take a stab
> at merging these two concepts.
>
> On Sunday, November 11, 2012 6:23:24 PM UTC-5, Brian M
(Actually, previous was wrong. The `in-ns` calls seem to have to be at the top
level, as in:
(in-ns 'clojure.core)
(if-not (resolve 'ex-info)
(defn ex-info ...)
(in-ns 'midje.repl)
-----
Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clo
On Dec 6, 2012, at 10:41 AM, Brian Marick wrote:
>(ns midje.repl
> (:require ...
>midje.util.backwards-compatible-utils
>[leiningen.core.project :as project]
>
It worked to remove the modification to core from
`m.u.backwards-compatible
e.project :as project]
... when `m.u.backwards-compatible-utils` contains:
(when (ecosystem/clojure-1-3?)
(in-ns 'clojure.core)
(defn ex-info ...)
(in-ns 'midje.util.backwards-compatible-utils))
Why not? What should I do instead?
-
Brian Marick, Arti
multimethods only vectors work if you want to
have a type hierarchy. I wish sets worked, but then you'd have to also have
some sort of destructuring mechanism to bind the parameters.
-
Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
Occasional consulting
of a
taxonomy. A ::gaussjammer is a subtype of a ::spaceship.
-
Brian Marick, Artisanal Labrador
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Occasional consulting on Agile
Writing /Functional Programming for the Object-Oriented Programmer/:
https://leanpub.com/fp-oo
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starships))]
(map (partial with-speed speed) starships
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; I'll be looking for
people who can share (general purpose tricks of the aging trade). Contact me if
interested.
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Writing /Functional Programming for the Object-Oriented Programmer
ogic to generate
structured (hierarchical) test data that satisfies constraints. I could imagine
the two code bases being complementary. Mine is at:
https://github.com/marick/peano
I gave a talk on the idea at Software Craftsmanship North America (yesterday).
I believe it was recorded.
-----
Brian M
rtain structured problems,
especially ones that lend themselves to combinations of predefined rules that
apply to every step, monads are just The Right Thing.
Even if you don't use them, I'm inclined to think monads are a useful example
of how to think about functions in a functional l
I merged your pull request, and I'm now getting up to speed with nrepl,
leiningen 2, etc.
Do you want to be a committer to midje-mode? I'll have to get dnaumov to set
you up, since it's his repo.
-----
Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clo
On Oct 17, 2012, at 2:35 PM, Andreas Liljeqvist wrote:
> Just to clear something up: Are you maintaining midje-mode?
> I thought it was Dmitri?
> That's where I left my pull request anyway.
I'm a committer for `midje-mode`.
-
Brian Marick, Artisanal Labrador
Contract prog
soon, because I want to start using nrepl myself.
Again: sorry.
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Writing /Functional Programming for the Object-Oriented Programmer/:
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ntents of the object
to be immutable.
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ammer ::thing] [::starship ::starship])
Why? In what cases would a programmer prefer something like the second match?
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Writing /Functional Programming for the Object-Oriented Progr
oo/blob/master/sources/generic.clj
https://github.com/marick/fp-oo/blob/master/test/sources/t_generic.clj
I've already discovered changes I need to make.
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Writing /Functional Program
learning it will inform their documentation), are quick studies, and are
skilled explainers.
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ail to clojure@googlegroups.com
> Note that posts from new members are moderated - please be patient with your
> first post.
> To unsubscribe from this group, send email to
> clojure+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/c
:
user=> (collide (ship "Space Beagle") (asteroid "Malse"))
IllegalArgumentException No method in multimethod 'collide' for dispatch value:
[:ship :asteroid] clojure.lang.MultiFn.getFn (MultiFn.java:121)
;;; The redefinition didn't take
-
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to Clojure.)
https://leanpub.com/fp-oo
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t nil to represent failure
and {} to represent a success that establishes no bindings.
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Why does `(merge)` return nil? I would have expected it to return the unit ({})
by analogy with things like this:
(+) => 0
(*) => 1
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ure.lang.Numbers.ops (Numbers.java:942)
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er=> (defn count-sequence [& seq]
(match [seq]
[([so-far [x & xs]] :seq)] (str "1:" so-far x xs)
[([[& sequence]] :seq)] (str "2:" sequence)))
user=> (count-sequence [1 2 3])
nil
This is a bug? Please?
(Note: the same thing happens without a &am
)))
>
I actually have a whole chapter on this. (Arguably, the whole first part of the
book leads up to that chapter.) I even use Point as an example!
But "it's functions all the way down!" is not what I'm looking for in this
section. Because you wouldn't use such a
osures to avoid the need to have some particular argument passed from
function to function (which looks like the `this` in an instance method).
Note: please put the flamethrower down. I'm not saying that "looking like
objects" is the point of higher-order functions.
I'
.com/2011/07/11/results-of-the-2011-state-of-clojure-survey/
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To post to
t to have a chapter on
concurrency. Of the various types of concurrency Clojure offers, which do you
think would be most useful to explain? My inclination is: auto-concurrency due
to immutability, futures (I love futures), and atoms. What do you think would
be the right set?
-
Brian Marick
f I'm
> wrong, no one will come and I'll stop doing it. :)
If Gabriel is still the driving force behind Splash, he'd *like* it to be the
kind of meeting ground for industry and academia that the earlier OOPSLAs were.
-
Brian Marick, Artisanal Labrador
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imagine it doing that for built-ins (or just primitives?), but not for
user-defined functions (given the existence of atoms, etc.) I can also imagine
it not bothering for any calls.
-----
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Occasional consulting on Agile
to handle an exception. That exception is hard to
generate. So this is a way to artificially create and throw one.
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Contract programming in Ruby and Clojure
Occasional consulting on Agile
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se phones as their main, workaday interface, and how much an
extra inconvenience 9 characters is when they're already trying to view the
world through a keyhole.
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to Google Groups is ~3-click (I've done it numerous
times), which makes more sense:
* that 1 person adjust the group settings
* that N>>1 list recipients adjust their clients
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Contract programming in Ruby and Cloj
On Jun 17, 2012, at 1:45 PM, Andy Coolware wrote:
> I have been subscribed to a couple of groups as well as other stuff
> and find it useful to have a Subject line prefix indicating the source
> of conversation.
+1
-----
Brian Marick, Artisanal Labrador
Now working at http://path11.com
On Jun 8, 2012, at 8:49 AM, Jay Fields wrote:
> I wouldn't mind seeing more in clojure.string. e.g. daserize, underscore,
> pascal-case, camel-case
+1
-
Brian Marick, Artisanal Labrador
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Occasional consulting on Agile
www.e
7;[clojure.core.logic :as l])
user=> (l/unifier '[1 ?two 3 4] '[1 2 ?three 4])
[1 2 3 4]
user=> (l/unifier '[1 ?two 3 4] '[1 2 ?three NOT-FOUR])
nil
user=> (l/binding-map '[1 ?two 3 4] '[1 2 ?three 4])
{?three 3, ?two 2}
-
Brian Marick, Artisanal Labrador
ichael Feathers: it's one that
doesn't try to be *so* universal that it's too hard to learn and too fiddly to
work with, but that also doesn't require so much coding that it doesn't save
you enough work. http://www.artima.com/weblogs/viewpost.jsp?thread=8826
-
Bria
.
Changes: https://github.com/marick/Midje/wiki/New-in-1.4
User documentation: https://github.com/marick/Midje/wiki
Repo: https://github.com/marick/Midje
-
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Occasional consulting on Agile
www.exampler.com
mal)
~setter))]
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Contract programming in Ruby and Clojure
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To post
ou have to run it another time to find which next thing to exclude.
None of this makes any sense to me, and I hope I never really need to
understand it. I accept this pain as an offering to the Java gods.
-
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Contract programming in
removing all other dependencies first and try again.
Note that Midje 1.4 (beta-2 just pushed today) has fixed this problem.
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On Apr 26, 2012, at 12:09 PM, Laurent PETIT wrote:
> Le 26 avr. 2012 à 02:15, Brian Marick a écrit :
>
>> Midje is getting to the point where it probably wants some sort of
>> configuration/customization file. Is there any sort of emerging idiom for
>> those in Cloju
y, will we force him to
put that in his Java classpath? [Speaking as a Unix guy for 30 years: ick.]
- Etc.
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Contract programming in Ruby and Clojure
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t; namespace and its implementation. Does this make sense? Is there a better way
> to dependency injection in Clojure?
To what end are you injecting dependencies? (If it's for testing, I have
something useful to say; if not, not.)
-
Brian Marick, Artisanal Labrador
Now working
l to put 1.3 in the title. (I see that it's there way
down in the bottom.)
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Contract programming in Ruby and Clojure
Occasional consulting on Agile
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rpose:
https://github.com/marick/Midje/wiki/Setup%2C-Teardown%2C-and-State
Note that you can mix and match Midje tests and clojure.test tests, even wrap
Midje tests inside deftest, so using `background` doesn't commit you to a
wholesale rewrite of existing tests.
-
Brian Marick,
or something) be changed
so that inadvertent use of a Long doesn't blow up? Or maybe Haskellishly have a
line number be some sort of wrapped type?
-
Brian Marick, Artisanal Labrador
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Contract programming in Ruby and Clojure
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at the metadata
> swizzling is happening during expansion.
Yes. I was just adding 1.4 to the backwards-compatibility suite and noticed a
bug. The change-clojure-version script wasn't changing part of the suite - the
part I put the Long->Int regression test in. Sigh.
-
Brian Marick,
On Dec 20, 2011, at 11:44 AM, David Nolen wrote:
> Are you attaching line metadata yourself?
Yes... What type should it be?
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On Dec 19, 2011, at 7:34 PM, Brian Marick wrote:
> I have tried for two days to figure out what is causing the compiler to throw
> the following when compiling a macro:
>
> Caused by: java.lang.ClassCastException: java.lang.Long cannot be cast to
> java.lang.Int
> (midje.semi-sweet/data-fake ..service.. =contains=> {:status 200} :position
> (midje.internal-ideas.file-position/line-number-known 17)))
> (midje.util.report/fact-checks-out?))
That compiles perfectly fine.
-
Brian Marick, Artisanal Labrador
Now working at http://path11.com
7;re in
https://github.com/marick/Midje/blob/master/src/midje/internal_ideas/file_position.clj
The other two are fairly specific to Midje, so they're probably harder to
understand, but they may be of use.
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Contract programming in Ruby
sites
More here: https://github.com/marick/Midje/blob/master/HISTORY.md
Thanks especially to Alex Baranosky, who did a lot of work on this release.
Enjoy.
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oup, send email to clojure@googlegroups.com
> Note that posts from new members are moderated - please be patient with your
> first post.
> To unsubscribe from this group, send email to
> clojure+unsubscr...@googlegroups.com
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> http://groups.go
e-ey, and (arguably) harder to understand.
It was a masterpiece of snark. I've never been able to find it since. If anyone
has a copy, I'd love to get one.
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e-with-clojurezip/
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at NPE.
It's all better now. Alan Malloy's fix worked fine on Clojure 1.2.1 and 1.3.
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eems to have the same effect as the defonce in some simple testing.
>
> Of course it's silly to use intern the second time: (.setRoot the-var
> clojure.test/report) would have been simpler.
Thank you. You've made a user happy.
(You meant .bindRoot rather than .setRoot, right?)
o Clojure, and
I didn't understand it. I think it was a workaround for something in Clojure
1.1. I bet I can figure it out now.
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rd.
More discussion should probably happen at http://groups.google.com/group/midje
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llPointerException clojure.lang.Compiler.lookupVar (Compiler.java:6780)
What could that exception mean? What's a starting point for debugging?
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> On Nov 1, 2011, at 11:17 AM, Chas Emerick wrote:
>
>> FWIW, it doesn't look like `every?` has any inlining:
Ah, I see what's actually going on. My mistake.
It's good to hear about how to do the inline check. Thanks!
-
Brian Marick, Artisanal Labrador
Now w
x27;s already been ruled
out.)
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de, which
I then threw away. But it must be the case that the problem was a stray var
reference at the top level. Thanks!
(It's hard to get used to declare-before-use when you're an old dog like me.)
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Contract prog
))` idiom and *not* want isDynamic-ness to be copied?
Seems to me that if you're going to use metadata to communicate intention about
dynamic binding in *one* way of creating a new var, you should do it with *all*
ways of creating a new var.
-
Brian Marick, Artisanal Labrador
Now working a
ion: Unable to resolve
symbol: *copy2* in this context, compiling:(midje/t_m.clj:26)
`def` does work.
Bug?
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a #'*copy*)
{:ns #, :name *copy*, :dynamic true, :line 1, :file ...}
But you can't rebind:
user=> (binding [*copy* "new value"] *copy*)
IllegalStateException Can't dynamically bind non-dynamic var: user/*copy*
clojure.lang.Var.pushThreadBindings (Var.j
e are overflow exceptions, they
won't come from Midje code.
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> course.
How about putting the information back on the function? Who would be harmed by
reverting back to old behavior?
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> "clojure/core.clj"}
I understand that. Useful code is sometimes given a function object to work
with, not a Var.
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etadata is missing:
user=> (meta odd?)
nil
The previous behavior was useful. I made use of it. Is it a bug that it's gone
away? If not, what's the reasoning behind the change?
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their time screwing around with arithmetic boundaries.
An unlikely case, to be sure, but I believe this kind of fit-and-finish is
important.
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st [+' 1])) seems like it should work in both versions?
That is outrageously clever.
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library writer who wants to honor the choices of his users do?
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ot;Why, yes!". That answer shouldn't
depend on historical details like who first wrote a library.
People matter less than code.
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eally interesting.
https://github.com/marick/Midje has a DSL for expressing tests (called
"facts"). Although the DSL is pretty simple, the code behind them isn't. But
you could see some interesting things if you macroexpanded facts, and I'd be
glad to answer questions pos
Chris. Not enough people (2) said they were interested for this to go
forward.
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human negotiation and communication works.
I really think `def-` would be a good gesture, a minor but emblematic step on
the way to widespread acceptance of Clojure, which (for my sake) I really,
really, really hope for.
-
Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
weighs the burden of moving a def- macro from a contrib file to a
core file. It even outweighs the aesthetic concerns (which I confess I don't
understand).
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Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
Occasional consulting on Agile
www.exampler.com, www.
us power, should suffice.)
What say you?
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as DWWTWHM
("Do What Warren Teitelman Would Have Meant").
It is a hard problem. It's also an important problem.
(In Midje, I've tried to be good about checking for user errors. It's
surprising how often a misparenthesization can't be reported because there'
taconstant?
equiv is called with midje.ideas.t-m.Metaconstant clojure.lang.Symbol
true
= metaconstant symbol?
equiv is called with midje.ideas.t-m.Metaconstant clojure.lang.Symbol
true
Why is .equiv called with reordered arguments? And can I depend on that
behavior going forward?
I
le'? (:start voyage) eliminates the possibility
of that confusion, saving me some mental name-picking anguish."
I'm interested in what you think when you see a keyword, and what it would mean
if you didn't.
(Sorry for the long note, but this way I get to use some of my B.A 19
On Jul 27, 2011, at 7:26 PM, Brian Marick wrote:
> How *does* one provide dates to ClojureQL for transmission to Postgres? I
> want to do something like this:
>
> (ql/conj! (ql/table :animals) {:official_name "fred" :added_to_service
> <<>>})
Boy I was
stgres? I want
to do something like this:
(ql/conj! (ql/table :animals) {:official_name "fred" :added_to_service
<<>>})
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(f) => (throws NullPointerException))
true
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Contract programming in Ruby and Clojure
Occasional consulting on Agile
www.exampler.com, www.twitter.com/marick
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grand/enlive/wiki/Table-and-Layout-Tutorial,-Part-1:-The-Goal
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Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
Occasional consulting on Agile
www.exampler.com, www.twitter.com/marick
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On Jul 13, 2011, at 6:03 AM, Ambrose Bonnaire-Sergeant wrote:
> I've found that (some of) Clojure's advanced features are best taught in
> terms of simpler ideas
> that most programmers would be familiar with.
+1
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Brian Marick, Artisanal Labrador
Contract programming
thing
to do would be to implement a feature and narrate how you decide where to put
things, where existing things must be, and so forth. [I spend a fair amount of
time parachuting into projects and learning the code structure by pairing.
Works pretty nicely.]
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Brian Marick, Artisanal Labra
inadvertent
preparatory work done by people like Pragmatic Dave Thomas, Chad Fowler,
Nathaniel Talbott, and Jim Weirich. We'd do well to learn from their oral
histories of the early days of Ruby.
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Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
Occasional con
t;protocols" except when I care
about efficiency or Java interop?
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Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
Occasional consulting on Agile
www.exampler.com, www.twitter.com/marick
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al style. I remember the explanation of
Visitor is nothing like any other I'd ever seen.
http://www.amazon.com/Little-Java-Few-Patterns/dp/0262561158/ref=ntt_at_ep_dpt_4
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Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
Occasional consulting on Agile
around that does essentially that. It suffices.
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Brian Marick, Artisanal Labrador
Contract programming in Ruby and Clojure
Occasional consulting on Agile
www.exampler.com, www.twitter.com/marick
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You received this message because you are subscribed to the Google
Groups "Clojure&qu
ion" is deferring
decisions about data structures. In the above, we don't have to know anything
about what a "movie" is except that `critic-rating` and `actors` work with it,
which is saying something like what `defprotocol` says.]
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Brian Marick, Artisanal La
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