Friday, 4 May 2018

Gorilla-REPL with boot

Gorilla-REPL is analogous to what IPython notebooks are for Python. It provides a web page with markdown and code where one can experiment on various data sets and save the results, use it for code snippets, documentation and such. And it works pretty decently. Gorilla-REPL provide lein plugin integration. Using it with boot can be done sooheon/boot-gorilla library. A sample boot task is shown below.
#!/usr/bin/env boot

    :source-paths #{"src" "test"}
    :resource-paths #{"resources"}
    :dependencies '[[org.clojure/clojure "1.9.0"]
                    [sooheon/boot-gorilla "0.1.1-SNAPSHOT"]])

(require '[sooheon.boot-gorilla :refer [gorilla]])

(deftask grepl []
  (gorilla :port 8002 :ip "" :block true))
Start the Gorilla-REPL using boot grepl and we will see something similar as below.
Gorilla-REPL: 0.4.1-SNAPSHOT
Started nREPL server on port 52660
Running at .
Ctrl+C to exit.
<< started Gorilla REPL on >>
Navigate to to see the Clojure notebook. Required dependencies can be added to the boot build script, which will be available in the worksheet. Worksheets are saved as Clojure code. We can use gorilla-repl viewer to view these file online. Sample workbook, fibonacci.clj.

Full code added to codebook repo at GitHub.

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