rsh

rename for filters

Creates a new table with columns renamed.

Signature

> rename {flags} ...rest

Flags

  • --column, -c {record}: column name to be changed
  • --block, -b {closure(any)}: A closure to apply changes on each column

Parameters

  • ...rest: the new names for the columns

Input/output types:

input output
record record
table table

Examples

Rename a column

> [[a, b]; [1, 2]] | rename my_column
╭───┬───────────┬───╮
│ # │ my_column │ b │
├───┼───────────┼───┤
│ 0 │         1 │ 2 │
╰───┴───────────┴───╯

Rename many columns

> [[a, b, c]; [1, 2, 3]] | rename eggs ham bacon
╭───┬──────┬─────┬───────╮
│ # │ eggs │ ham │ bacon │
├───┼──────┼─────┼───────┤
│ 0 │    1 │   2 │     3 │
╰───┴──────┴─────┴───────╯

Rename a specific column

> [[a, b, c]; [1, 2, 3]] | rename --column { a: ham }
╭───┬─────┬───┬───╮
│ # │ ham │ b │ c │
├───┼─────┼───┼───┤
│ 0 │   1 │ 2 │ 3 │
╰───┴─────┴───┴───╯

Rename the fields of a record

> {a: 1 b: 2} | rename x y
╭───┬───╮
│ x │ 1 │
│ y │ 2 │
╰───┴───╯

Rename fields based on a given closure

> {abc: 1, bbc: 2} | rename --block {str replace --all 'b' 'z'}
╭─────┬───╮
│ azc │ 1 │
│ zzc │ 2 │
╰─────┴───╯