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• Each appropriate command pretty-prints the first 20 rows of the current data structure.
• Data structure listings are automatically paged so you're less likely to blow up your REPLby inadvertently listing a huge data structure.
• At the same time, the current object pointed-to by the (pwd) is always available so you canmap, mapcat, reduce, and grep the actual objects to your heart's content.

    (mount data-structure)    (cd:child-node1:another-child ...)    (cd"..")    (ls)    (pwd)    (current); return the current object    (current:sub1:sub2 ...); return the object referenced by :sub1 and :sub2 from (current)

Generally:

    (grep matcher root-object)

Recursively applies matcher toall children of root-object. When a match is found, the containerof the matched object is returned.

The matcher itself can be any type. If it is a regular expression Pattern, it is matched againststrings or the output of (.toString obj) Strings match any substring of (.toString object).All other objects match using (= matcher obj).

Example:

    => (grep :diffed (current))    [[:diffed {}] [:diffed {}]]

In this case, grep searched a data structure that reports differences between two related objects.This run determined that there were no differences found under (current).

    (| (range50) inc #(/ %2) +)

(Experimental module)

Inject behavior before/after/around all forms in a do-style block or thread-lastmacro form (experimental).

For example:

    (inject logging (form1) (form2) ...)

Logs each form as it is executed. If a form takes longer than 1/2 second, logs the elapsedtime as well.

Or:

    (fns (form1) (form2) ...)

Returns a vector containing all forms converted into 0-arg functions. These functions thencan be executed during a map, mapcat, or reduce operation and their results stored, furtherprocessed, logged, etc.

These utilities are designed mainly to enhance REPL usage, so we suggest adding them to your.lein/profiles.clj in the :user or :dev profile or equivalent for your build tool.

One might always want these utilities available, even at runtime. In that case, addingthem to your :user profile would make sense. To do that, merge the following into your:user map in your profiles.clj file.

:user {:repositories [["jitpack""https://jitpack.io"]]:dependencies [[com.github.shopsmart/clojure-navigation"version"]]}

where "version" currently is "".

<repositories>  <repository>    <id>jitpack.io</id><name>Jitpack repo</name><url>https://jitpack.io</url>  </repository></repositories>

• GroupId: com.github.shopsmart
• ArtifactId: clojure-navigation
• Version:

Copyright © 2015 by ShopSmart, LLC. Licensed under the Eclipse Public License v1.0.

David Orme