forked from extern/nushell
c13fe83784
* update docs to refer to length instead of count * rename count to length * change all occurrences of 'count' to 'length' in tests * format length command
67 lines
2.3 KiB
Markdown
67 lines
2.3 KiB
Markdown
# length
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Obtain the row or column count of a table.
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## Flags
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* `-c`, `--column`: Calculate number of columns in table
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## Examples
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```shell
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> ls
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────┬────────────────────┬──────┬──────────┬──────────────
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# │ name │ type │ size │ modified
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────┼────────────────────┼──────┼──────────┼──────────────
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0 │ CODE_OF_CONDUCT.md │ File │ 3.4 KB │ 42 mins ago
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1 │ CONTRIBUTING.md │ File │ 1.3 KB │ 42 mins ago
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2 │ Cargo.lock │ File │ 113.3 KB │ 42 mins ago
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3 │ Cargo.toml │ File │ 4.6 KB │ 42 mins ago
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4 │ LICENSE │ File │ 1.1 KB │ 3 months ago
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5 │ Makefile.toml │ File │ 449 B │ 5 months ago
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6 │ README.md │ File │ 15.9 KB │ 31 mins ago
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7 │ TODO.md │ File │ 0 B │ 42 mins ago
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8 │ assets │ Dir │ 128 B │ 5 months ago
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9 │ build.rs │ File │ 78 B │ 4 months ago
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10 │ crates │ Dir │ 704 B │ 42 mins ago
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11 │ debian │ Dir │ 352 B │ 5 months ago
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12 │ docker │ Dir │ 288 B │ 3 months ago
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13 │ docs │ Dir │ 192 B │ 42 mins ago
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14 │ features.toml │ File │ 632 B │ 4 months ago
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15 │ images │ Dir │ 160 B │ 5 months ago
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16 │ rustfmt.toml │ File │ 16 B │ 5 months ago
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17 │ src │ Dir │ 128 B │ 1 day ago
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18 │ target │ Dir │ 160 B │ 5 days ago
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19 │ tests │ Dir │ 192 B │ 3 months ago
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────┴────────────────────┴──────┴──────────┴──────────────
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```
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By default, `length` will return the number of rows in a table
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```shell
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> ls | length
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20
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```
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The `-c` flag will produce a count of the columns in the table
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```shell
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> ls | length -c
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4
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```
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```shell
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> ls | where type == File | length
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11
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```
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```shell
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> ls | where type == Dir | length
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9
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```
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```shell
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> ls | where size > 2KB | length
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4
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```
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