Clojure rounding to decimal places

clojure, decimal

Solution

You can use Clojure's `format` for this purpose. It should provide you a solution to your problem. Here are some examples and a reference:

user=> (format "%.2f" 0.010)
"0.01"
user=> (format "%.2f" 0.010000)
"0.01"
user=> (format "%.2f" 00.010000000)


user=> (doc format)
-------------------------
clojure.core/format
([fmt & args])
  Formats a string using java.lang.String.format, see java.util.Formatter for format
  string syntax

Problem

I have strings which represents the decimal values, ex: "0.010", "0.0100000" "00.01000" I want to round them to specified format, ex: #.## In Java we have: ``` public BigDecimal setScale(int newScale, RoundingMode roundingMode) { return setScale(newScale, roundingMode.oldMode); } ``` What is the best approach to achieve this in Clojure rather than using interop?

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