I had always assumed that vectors were sorted lexicographically. In
other words, you sort on the first element, and then refine by the
second element, and so on. I was surprised tonight to discover that
is not the case.
(compare abc b); Strings are compared lexicographically
-1
perfect answer.
thank you !
btw: my snippet is taken out of the docs for java.jdbc.
On Aug 22, 12:04 pm, Meikel Brandmeyer (kotarak) m...@kotka.de
wrote:
Hope, I'm not too far off.
Sincerely
Meikel
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On Tue, Aug 23, 2011 at 09:44, Mark Engelberg mark.engelb...@gmail.com wrote:
I had always assumed that vectors were sorted lexicographically. In
other words, you sort on the first element, and then refine by the
second element, and so on. I was surprised tonight to discover that
is not the
Hello,
win XP, clojure 1.2.1 and clojure.contrib-1.2.0.jar here. i want to
learn clojure (background python and javascript and a bit Haskell) and
are currently reading the pdf 'Programming Clojure' from 2009.
In Chapter 1.3: 'Exploring Clojure Libraries' it says:
Clojure code is packaged in
Hi
On 23 August 2011 12:10, Wanderfels wanderf...@web.de wrote:
Hello,
win XP, clojure 1.2.1 and clojure.contrib-1.2.0.jar here. i want to
learn clojure (background python and javascript and a bit Haskell) and
are currently reading the pdf 'Programming Clojure' from 2009.
In Chapter 1.3:
In the ClojureScript case, you can do lazy compile time compilation
instead, where the predicate call is really a macro that always
expands into a predicate call but during compile time can check if the
tree needs to be updated. This isn't as lazy as the runtime version
but at least groups of
I was trying to construct a simple example of what I actually have in
my apps that use pooling on top of java.jdbc. My actual code *does*
work to create a singleton but you're right, I've contracted my code
too far in trying to create a simple example of it... I'll have
another attempt!
Sean
On
Hi!
I have some challenge for you, sine it is easy express it in
imperative language I would like to ask you if is it possible to
create DSL to express such algorithm in clojure or if is it too
complicated just write it in functional manner. The challenge is to
write cron algorithm. I can express
After the post I suddenly saw the code in my mind: http://pastebin.com/kYYYirdb
The expression abilities are truly near the mind.
Clojure rox :-)
On Aug 23, 6:01 pm, Michael Jaaka michael.ja...@googlemail.com
wrote:
Hi!
I have some challenge for you, sine it is easy express it in
imperative
Hi,
Am 23.08.2011 um 18:01 schrieb Michael Jaaka:
I have some challenge for you, sine it is easy express it in
imperative language I would like to ask you if is it possible to
create DSL to express such algorithm in clojure or if is it too
complicated just write it in functional manner. The
Wow nice! :-)
Of course wait-till can be done with Timers build-in JDK.
And here is a proposition for cron parsing function:
(defn parse-cron-expr[ pattern ]
(let[ cal (Calendar/getInstance) ]
(let [[min-pat hour-pat day-pat month-pat week-pat] (letfn[ (parse-cron[ val
pos cal ]
(letfn[
Did you use the -cp option to include the contrib when running
java.exe on clojure.jar? The error shows that it's looking in a
subdirectory with a .class rather than the packaged jar file.
I'd suggest using leiningen to avoid build problems like this.
On Aug 23, 6:10 am, Wanderfels
this doesn't work:
user= (defn if-a [a b] (if (a) (str a) (str b)))
#'user/if-a
user= (if-a nil b)
java.lang.NullPointerException (NO_SOURCE_FILE:0)
user= (if-a a nil)
user= java.lang.ClassCastException: java.lang.String cannot be cast
to clojure.lang.IFn (NO_SOURCE_FILE:0)
this does work:
You have an extra set of parens around a, treating it as a function call. Try:
(defn if-a [a b] (if a (str a) (str b)))
Hope that helps,
Dave
On Tue, Aug 23, 2011 at 4:37 PM, Andrew Xue and...@lumoslabs.com wrote:
this doesn't work:
user= (defn if-a [a b] (if (a) (str a) (str b)))
user= (defn if-a [a b] (if (a) (str a) (str b)))
The problem is (a) - it tries to call a as a function, which
throws NullPointer if a is nil. You meant:
user= (defn if-a [a b] (if a (str a) (str b)))
mg
On Tue, Aug 23, 2011 at 9:37 PM, Andrew Xue and...@lumoslabs.com wrote:
this
Given:
test=(defrecord Foo [A B])
test=(class (Foo. 1 2))
test.Foo
How do I:
test=(new test.Foo 1 2)
#:test.Foo{:A 1, :B 2}
Currently I get Unable to resolve classname: test/Foo.
Thanks,
Timothy
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“One of the main causes of the fall of the Roman Empire was
that–lacking zero–they had no
Given:
test=(defrecord Foo [A B])
test=(class (Foo. 1 2))
test.Foo
How do I:
test=(new test.Foo 1 2)
#:test.Foo{:A 1, :B 2}
Currently I get Unable to resolve classname: test/Foo.
Thanks,
Timothy
(Class/forName java.lang.String)
Be mindful of the performance...
Stu
Given:
test=(defrecord Foo [A B])
test=(class (Foo. 1 2))
test.Foo
How do I:
test=(new test.Foo 1 2)
#:test.Foo{:A 1, :B 2}
Currently I get Unable to resolve classname: test/Foo.
Check out
(Class/forName java.lang.String)
Oh, does that work in 1.3? Because (new (Class/forName user.Foo))
was the first thing I tried (under 1.2) and it doesn't work. Perhaps
unsurprisingly given that new is a special form.
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On Aug 23, 3:39 pm, Craig Andera cand...@wangdera.com wrote:
(Class/forName java.lang.String)
Oh, does that work in 1.3? Because (new (Class/forName user.Foo))
was the first thing I tried (under 1.2) and it doesn't work. Perhaps
unsurprisingly given that new is a special form.
No. But you
Hi,
It looks like Oracle NUMBER types get mapped to BigDecimal in a result
seq from clojure.java.jdbc. Is there an easy way to configure
clojure.java.jdbc/ResultSet to map Oracle NUMBERS to doubles?
The resultset-seq from
test= (def foo-class-symbol (load-string test.Foo))
test= (def foo (eval (list 'new foo-class-symbol 1 2)))
test= foo
#:test.Foo{:A 1, :B 2}
Is that what you want?
On Aug 23, 6:24 pm, Timothy Baldridge tbaldri...@gmail.com wrote:
Given:
test=(defrecord Foo [A B])
test=(class (Foo. 1 2))
No, you'd have to do it yourself. Since not all BigDecimal values
would fit correctly in double, it would be dangerous for resultset-seq
to do it.
I expect there are all sorts of JDBC data types that don't quite match
Clojure types but I don't think automatically mapping them would be a
good
Hey Sean,
I really appreciate the quick response and your work with java.jdbc.
Completely agree with you that it shouldn't automatically map out of
the box. As a newbie to clojure and jdbc, do you have any advice on
how I can get into resultset-seq* to do the mapping? I think it would
be better
On Tue, Aug 23, 2011 at 9:54 PM, HiHeelHottie hiheelhot...@gmail.com wrote:
Are there any future plans to add a mapping api to resultset-seq or is
the pattern just to chain any custom mappings after resultset-seq?
Is wrapping in (map double ...) too much typing? :)
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On Tue, Aug 23, 2011 at 6:54 PM, HiHeelHottie hiheelhot...@gmail.com wrote:
Completely agree with you that it shouldn't automatically map out of
the box. As a newbie to clojure and jdbc, do you have any advice on
how I can get into resultset-seq* to do the mapping? I think it would
be better
the oracle jdbc adapter returns a whole host of strange datatypes. for
instance, it returns bigdecimals for numbers you have mapped to be
numbers (with a precision, without a scale) in the table. it also
returns its own custom time classes. these generally have a toJdbc()
method to convert them to
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