Thanks Joshua,
This is fixed in the next beta.
Stuart
> A related point about the validator function (for Refs), possible
> the result of the same change in the Clojure codebase
> On page 133 of Beta 5.0,
>
> (def messages (ref () :validator validate-message-list)
>
> The code samples,
A related point about the validator function (for Refs), possible the result
of the same change in the Clojure codebaseOn page 133 of Beta 5.0,
(def messages (ref () :validator validate-message-list)
The code samples, using, the bundled clojure, do work. However, right above
the code on p.
Thank you very much, Stuart!
I think it's a good idea for me to start reading Clojure source code
and keep track of the changes, as the language changes so quickly...
On Jan 16, 10:02 am, Stuart Halloway
wrote:
> Hi Telman,
>
> The signature for agent has changed. Use:
>
> (def counter
Hi Telman,
The signature for agent has changed. Use:
(def counter (agent 0 :validator number?))
I will update the prose in Beta 6.
Stuart
> I keep running into the following problem trying to supply agent
> validation function. Here is sample code from page 135 (from book
> version bet
I keep running into the following problem trying to supply agent
validation function. Here is sample code from page 135 (from book
version beta 5)
(use '[clojure.contrib.except :only (throw-if)])
(def counter (agent 0 #(throw-if (not (number? %)) "not a number")))
triggers the following exceptio
Long, long ago (Tuesday) when Beta 5 of the book shipped, there were
some breakages in the sample code due to changes in clojure-contrib. I
believe everything is now fixed in the github repository
(http://github.com/stuarthalloway/programming-clojure
).
Summary of the issues:
1. clojure.co
