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Programming Clojure, Fourth Edition: page 13 & 19

lkuty

lkuty

Programming Clojure, Fourth Edition: page 13 & 19

On page 13, how to make (require 'examples.introduction) work ? How to augment the CLASSPATH such that clj is able to find examples/introduction.clj ? TIA

2 comments
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alexmiller

alexmiller

Author of Programming Clojure, Third Edition

This is a bit beyond what we decided to cover in the book, but you can use the with-precision macro to indicate a specific precision (and optionally rounding mode) for bigdecimal computations:

user=> (with-precision 5 (/ 22.0M 7))
3.1429M
Post #3

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lkuty

lkuty

Based on what is written on page 19, the following arbitrary precision computation does not work. Is there a way to make it work ? And maybe indicate it in the book ?

user=> (/ 22.0 7)
3.142857142857143
user=> (/ 22.0M 7)
Execution error (ArithmeticException) at java.math.BigDecimal/divide (BigDecimal.java:1810).
Non-terminating decimal expansion; no exact representable decimal result.
1
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