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each
Run a block on each row of the table.
Usage
> each <block> <subcommand> {flags}
Subcommands
- each group - Runs a block on groups of
group_sizerows of a table at a time. - each window - Runs a block on sliding windows of
window_sizerows of a table at a time.
Parameters
<block>the block to run on each row
Flags
- -h, --help: Display this help message
- -n, --numbered: returned a numbered item ($it.index and $it.item)
Examples
Echo the sum of each row
> echo [[1 2] [3 4]] | each { echo $it | math sum }
Echo the square of each integer
> echo [1 2 3] | each { echo ($it * $it) }
Number each item and echo a message
> echo ['bob' 'fred'] | each --numbered { echo $"($it.index) is ($it.item)" }
Name the block variable that each uses
> [1, 2, 3] | each {|x| $x + 100}