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add commas
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| (defn commas-foul [n] | |
| (->> n | |
| .toString | |
| reverse | |
| (partition-all 3) | |
| (interpose ",") | |
| flatten | |
| reverse | |
| (apply str))) | |
| ;; ty thallgren | |
| (defn commas [n] | |
| (-> Locale/US java.text.NumberFormat/getNumberInstance (.format n))) | |
| (commas 1234) | |
| "1,234" | |
| (commas 4123678) | |
| "4,123,678" | |
| (->> 45) | |
| "45" |
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