Commit Graph

4 Commits

Author SHA1 Message Date
Devyn Cairns
7a888c9e9b
Change behavior of into record on lists to be more useful (#13637)
# Description

The previous behaviour of `into record` on lists was to create a new
record with each list index as the key. This was not very useful for
creating meaningful records, though, and most people would end up using
commands like `headers` or `transpose` to turn a list of keys and values
into a record.

This PR changes that instead to do what I think the most ergonomic thing
is, and instead:

- A list of records is merged into one record.
- A list of pairs (two element lists) is folded into a record with the
first element of each pair being the key, and the second being the
value.

The former is just generally more useful than having to use `reduce`
with `merge` for such a common operation, and the latter is useful
because it means that `$a | zip $b | into record` *just works* in the
way that seems most obvious.

Example:

```nushell
[[foo bar] [baz quux]] | into record # => {foo: bar, baz: quux}
[{foo: bar} {baz: quux}] | into record # => {foo: bar, baz: quux}
[foo baz] | zip [bar quux] | into record # => {foo: bar, baz: quux}
```

The support for range input has been removed, as it would no longer
reflect the treatment of an equivalent list.

The following is equivalent to the old behavior, in case that's desired:

```
0.. | zip [a b c] | into record # => {0: a, 1: b, 2: c}
```

# User-Facing Changes
- `into record` changed as described above (breaking)
- `into record` no longer supports range input (breaking)

# Tests + Formatting
Examples changed to match, everything works. Some usage in stdlib and
`nu_plugin_nu_example` had to be changed.

# After Submitting
- [ ] release notes (commands, breaking change)
2024-08-22 11:38:43 +02:00
Devyn Cairns
948b90299d
Preserve attributes on external ByteStreams (#13305)
# Description

Bug fix: `PipelineData::check_external_failed()` was not preserving the
original `type_` and `known_size` attributes of the stream passed in for
streams that come from children, so `external-command | into binary` did
not work properly and always ended up still being unknown type.

# User-Facing Changes
The following test case now works as expected:

```nushell
> head -c 2 /dev/urandom | into binary
# Expected: pretty hex dump of binary
# Previous behavior: just raw binary in the terminal
```

# Tests + Formatting
Added a test to cover this to `into binary`
2024-07-05 21:10:41 +00:00
moonlander
ecaed7f0ae
add --signed flag for binary into int conversions (#11902)
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# Description
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- adds a `--signed` flag to `into int` to allow parsing binary values as
signed integers, the integer size depends on the length of the binary
value

# User-Facing Changes
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helps us keep track of breaking changes. -->
- attempting to convert binary values larger than 8 bytes into integers
now throws an error, with or without `--signed`

# Tests + Formatting
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- wrote 3 tests and 1 example for `into int --signed` usage
- added an example for unsigned binary `into int`

# After Submitting
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- will add examples from this PR to `into int` documentation
2024-02-27 15:05:26 +00:00
Herobs
a785e64bc9
Fix 9156 endian consistency (#9873)
- fixed #9156

# Description
I'm trying to fix the problems mentioned in the issue. It's my first
attempt in Rust. Please let me know if there are any problems.

# User-Facing Changes
- The `--little-endian` option dropped, replaced with `--endian`.
- Add the `--compact` option to the `into binary` command.
- `into int` accepts binary input
2023-08-24 07:08:58 -05:00