Closes#15543
# Description
1. Simplify code in ``datetime.rs`` based on a suggestion in my last PR
on "datetime from record"
1. Make ``into duration`` work with durations inside a record, provided
as a cell path
1. Make ``into duration`` work with durations as record
# User-Facing Changes
```nushell
# Happy paths
~> {d: '1hr'} | into duration d
╭───┬─────╮
│ d │ 1hr │
╰───┴─────╯
~> {week: 10, day: 2, sign: '+'} | into duration
10wk 2day
# Error paths and invalid usage
~> {week: 10, day: 2, sign: 'x'} | into duration
Error: nu:🐚:incorrect_value
× Incorrect value.
╭─[entry #4:1:26]
1 │ {week: 10, day: 2, sign: 'x'} | into duration
· ─┬─ ──────┬──────
· │ ╰── encountered here
· ╰── Invalid sign. Allowed signs are +, -
╰────
~> {week: 10, day: -2, sign: '+'} | into duration
Error: nu:🐚:incorrect_value
× Incorrect value.
╭─[entry #5:1:17]
1 │ {week: 10, day: -2, sign: '+'} | into duration
· ─┬ ──────┬──────
· │ ╰── encountered here
· ╰── number should be positive
╰────
~> {week: 10, day: '2', sign: '+'} | into duration
Error: nu:🐚:only_supports_this_input_type
× Input type not supported.
╭─[entry #6:1:17]
1 │ {week: 10, day: '2', sign: '+'} | into duration
· ─┬─ ──────┬──────
· │ ╰── only int input data is supported
· ╰── input type: string
╰────
~> {week: 10, unknown: 1} | into duration
Error: nu:🐚:unsupported_input
× Unsupported input
╭─[entry #7:1:1]
1 │ {week: 10, unknown: 1} | into duration
· ───────────┬────────── ──────┬──────
· │ ╰── Column 'unknown' is not valid for a structured duration. Allowed columns are: week, day, hour, minute, second, millisecond, microsecond, nanosecond, sign
· ╰── value originates from here
╰────
~> {week: 10, day: 2, sign: '+'} | into duration --unit sec
Error: nu:🐚:incompatible_parameters
× Incompatible parameters.
╭─[entry #2:1:33]
1 │ {week: 10, day: 2, sign: '+'} | into duration --unit sec
· ──────┬────── ─────┬────
· │ ╰── the units should be included in the record
· ╰── got a record as input
╰────
```
# Tests + Formatting
- Add examples and integration tests for ``into duration``
- Add one test for ``into duration``
# After Submitting
If this is merged in time, I'll update my PR on the "datetime handling
highlights" for the release notes.
5c59611083