# Nu map from functional languages
The idea behind this table is to help you understand how Nu built-ins and plug-ins relate to functional languages. We've tried to produce a map of all the Nu commands and what their equivalents are in other languages. Contributions are welcome.
Note: this table assumes Nu 0.43 or later.
| Nushell | Clojure | Tablecloth (Ocaml / Elm) | Haskell | |
|---|---|---|---|---|
| alias | ||||
| append | conj, into, concat | append, (++), concat, concatMap | (++) | |
| args | ||||
| autoview | ||||
| math avg | ||||
| into binary | Integer/toHexString | showHex | ||
calc, <math expression> | math operators | |||
| cd | ||||
| clear | ||||
| clip | ||||
| compact | ||||
| config | ||||
| count | count | length, size | length, size | |
| cp | ||||
| date | java.time.LocalDate/now | |||
| debug | ||||
| default | ||||
| drop | ||||
| du | ||||
| each | map, mapv, iterate | map, forEach | map | |
| echo | println | putStrLn, print | ||
| enter | ||||
| exit | System/exit | |||
fetch(*) | ||||
| first | first | head | head | |
| format | format | Text.Printf.printf | ||
| from | ||||
| get | ||||
| group-by | group-by | group, groupBy | ||
| headers | ||||
| help | doc | |||
| histogram | ||||
| history | ||||
inc(*) | inc | succ | ||
| insert | ||||
| empty? | empty? | isEmpty | ||
| keep | take, drop-last, pop | take, init | take, init | |
| keep-until | ||||
| keep-while | take-while | takeWhile | takeWhile | |
| kill | ||||
| last | last, peek, take-last | last | last | |
| lines | lines, words, split-with | |||
| ls | ||||
match(*) | re-matches, re-seq, re-find | |||
| merge | ||||
| mkdir | ||||
| mv | ||||
| next | ||||
| nth | nth | Array.get | lookup | |
| open | with-open | |||
| parse | ||||
| transpose | (apply mapv vector matrix) | transpose | ||
post(*) | ||||
| prepend | cons | cons, :: | :: | |
| prev | ||||
| ps | ||||
| pwd | ||||
| range, 1..10 | range | range | 1..10, 'a'..'f' | |
| reduce | reduce, reduce-kv | foldr | foldr | |
| reject | ||||
| rename | ||||
| reverse | reverse, rseq | reverse, reverseInPlace | reverse | |
| rm | ||||
| save | ||||
| select | select-keys | |||
| shells | ||||
| shuffle | shuffle | |||
| size | count | size, length | ||
| skip | rest | tail | tail | |
| skip until | ||||
| skip while | drop-while | dropWhile | dropWhile, dropWhileEnd | |
| sort-by | sort, sort-by, sorted-set-by | sort, sortBy, sortWith | sort, sortBy | |
| split-by | split, split-{at,with,lines} | split, words, lines | split, words, lines | |
| split column | ||||
| split row | ||||
str(*) | clojure.string functions | String functions | ||
| str collect | join | concat | intercalate | |
| str trim | trim, triml, trimr | trim, trimLeft, trimRight | strip | |
| sum | apply + | sum | sum | |
| sys | ||||
| table | ||||
| tags | ||||
tree(*) | ||||
| to | ||||
| touch | ||||
| uniq | set | Set.empty | Data.Set | |
| upsert | ||||
| version | ||||
| with_env | ||||
| what | ||||
| where | filter, filterv, select | filter, filterMap | filter | |
| which | ||||
| wrap |
*- these commands are part of the standard plugins