从命令式语言到 Nu
这个表格的目的是帮助你了解 Nu 的内置和插件所提供的命令与命令式语言的关系。我们试图制作一张所有 Nu 命令和它们在其他语言中的对应关系的表。欢迎大家参与贡献。
注意：此表假设 Nu 0.43 或更高版本。
| Nushell | Python | Kotlin (Java) | C++ | Rust |
|---|---|---|---|---|
| alias | ||||
| append | list.append, set.add | add | push_back, emplace_back | push, push_back |
| args | ||||
| autoview | ||||
| math avg | statistics.mean | |||
| calc, = math | math operators | math operators | math operators | math operators |
| cd | ||||
| clear | ||||
| clip | ||||
| compact | ||||
| config | ||||
| count | len | size, length | length | len |
| cp | shutil.copy | |||
| date | datetime.date.today | java.time.LocalDate.now | ||
| debug | ||||
| default | ||||
| drop | ||||
| du | shutil.disk_usage | |||
| each | for | for | for | for |
| echo | println | printf | println! | |
| enter | ||||
| exit | exit | System.exit, kotlin.system.exitProcess | exit | exit |
| fetch | urllib.request.urlopen | |||
| first | list[0] | List[0], peek | vector[0], top | Vec[0] |
| format | format | format | format | format! |
| from | csv, json, sqlite3 | |||
| get | dict["key"] | Map["key"] | map["key"] | HashMap["key"], get, entry |
| group-by | itertools.groupby | groupBy | group_by | |
| headers | ||||
| help | help | |||
| histogram | ||||
| history | ||||
inc(*) | x += 1 | x++ | x++ | x += 1 |
| insert | list.insert | |||
| is-empty | is None | isEmpty | empty | is_empty |
| keep | list[:x] | &Vec[..x] | ||
| keep until | ||||
| keep while | itertools.takewhile | |||
| kill | os.kill | |||
| last | list[-1] | &Vec[Vec.len()-1] | ||
| lines | split, splitlines | split | views::split | split, split_whitespace, rsplit, lines |
| ls | os.listdir | |||
match(*) | re.findall | Regex.matches | regex_match | |
| merge | ||||
| mkdir | os.mkdir | |||
| mv | shutil.move | |||
| next | ||||
| nth | list[x] | List[x] | vector[x] | Vec[x] |
| open | open | |||
| parse | ||||
| transpose | zip(*matrix) | |||
post(*) | urllib.request.urlopen | |||
| prepend | deque.appendleft | |||
| prev | ||||
ps(*) | os.listdir('/proc') | |||
| pwd | os.getcwd | |||
| range | range | .., until, downTo, step | iota | .. |
| reduce | functools.reduce | reduce | reduce | fold, rfold, scan |
| reject | ||||
| rename | shutil.move | |||
| reverse | reversed, list.reverse | reverse, reversed, asReversed | reverse | rev |
| rm | os.remove | |||
| save | io.TextIOWrapper.write | |||
| select | {k:dict[k] for k in keylist} | |||
| shells | ||||
| shuffle | random.shuffle | |||
| size | len | |||
| skip | list[x:] | &Vec[x..],skip | ||
| skip until | ||||
| skip while | itertools.dropwhile | skip_while | ||
| sort-by | sorted, list.sort | sortedBy, sortedWith, Arrays.sort, Collections.sort | sort | sort |
| split-by | str.split{,lines}, re.split | split | views::split | split |
| split column | ||||
| split row | ||||
str(*) | str functions | String functions | string functions | &str, String functions |
| str join | str.join | joinToString | join | |
| str trim | strip, rstrip, lstrip | trim, trimStart, trimEnd | regex | trim, trim*{start,end}, strip*{suffix,prefix} |
| sum | sum | sum | reduce | sum |
sys(*) | sys | |||
| table | ||||
| tags | ||||
tree(*) | ||||
| to | csv, json, sqlite3 | |||
| touch | open(path, 'a').close() | |||
| uniq | set | Set | set | HashSet |
| upsert | ||||
| version | sys.version, sys.version_info | |||
| with-env | os.environ | |||
| where | filter | filter | filter | filter |
| which | shutil.which | |||
| wrap |
*- 这些命令是标准插件的一部分