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til/clojure/pretty-print-the-last-thing.md
2015-11-16 21:31:15 -06:00

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# Pretty Print The Last Thing
Clojure provides `pp` as a convenience macro for pretty printing the last
thing that was output. If you are playing around with a function in the
repl, trying to get the output just right, `pp` can come in handy.
```clojure
> (fancy-func)
{:one {:a 1, :b 2, :c 3, :d 4}, :two {:b 2, :c 3, :d 4, :e 5}, :three {:c 3,
:d 4, :e 5, :f 6}, :four {:d 4, :e 5, :f 6, :g 7}}
> (clojure.pprint/pp)
{:one {:a 1, :b 2, :c 3, :d 4},
:two {:b 2, :c 3, :d 4, :e 5},
:three {:c 3, :d 4, :e 5, :f 6},
:four {:d 4, :e 5, :f 6, :g 7}}
nil
```
See `(doc pp)` for more details.