mirror of
https://github.com/nushell/nushell.git
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Added math product support (#2249)
* added math product: working initial impl * resolving merge conflicts * impl std::ops::Mul for Filesize * rebased with main; refactored product implementation * fixed error msg, added docs for math product
This commit is contained in:
Gurpreet Singh
GitHub
parent
a64270829e
commit
303a9defd3
88
Cargo.lock
generated
88
Cargo.lock
generated
@ -277,9 +277,9 @@ checksum = "1d49d90015b3c36167a20fe2810c5cd875ad504b39cff3d4eae7977e6b7c1cb2"
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||||
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|
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]
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|
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||||
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||||
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||||
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||||
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||||
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]
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@ -1384,9 +1394,9 @@ dependencies = [
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||||
@ -1807,9 +1817,9 @@ checksum = "aaf91faf136cb47367fa430cd46e37a788775e7fa104f8b4bcb3861dc389b724"
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||||
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@ -1863,7 +1873,7 @@ version = "0.8.2"
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[[package]]
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@ -2252,7 +2262,7 @@ version = "1.5.1"
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@ -2310,7 +2320,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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@ -2741,9 +2751,9 @@ dependencies = [
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||||
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||||
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||||
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||||
]
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@ -3511,7 +3521,7 @@ version = "0.1.43"
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||||
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||||
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@ -3521,7 +3531,7 @@ version = "0.1.41"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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"num-traits 0.2.12",
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]
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@ -3532,7 +3542,7 @@ version = "0.2.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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|
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"num-integer",
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"num-traits 0.2.12",
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@ -3553,7 +3563,7 @@ version = "0.2.12"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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|
||||
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|
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"autocfg 1.0.1",
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]
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[[package]]
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@ -3698,7 +3708,7 @@ version = "0.9.58"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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|
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dependencies = [
|
||||
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|
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"autocfg 1.0.1",
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"cc",
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"libc",
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"pkg-config",
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@ -4388,11 +4398,11 @@ dependencies = [
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[[package]]
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name = "rayon"
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version = "1.3.1"
|
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version = "1.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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||||
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||||
dependencies = [
|
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"autocfg 1.0.0",
|
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"autocfg 1.0.1",
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"crossbeam-deque",
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"either",
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"rayon-core",
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@ -4400,12 +4410,12 @@ dependencies = [
|
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[[package]]
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name = "rayon-core"
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version = "1.7.1"
|
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version = "1.8.0"
|
||||
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||||
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||||
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|
||||
dependencies = [
|
||||
"crossbeam-channel 0.4.3",
|
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"crossbeam-deque",
|
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"crossbeam-queue",
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"crossbeam-utils 0.7.2",
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"lazy_static 1.4.0",
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"num_cpus",
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@ -5187,9 +5197,9 @@ dependencies = [
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[[package]]
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name = "syn"
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version = "1.0.38"
|
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version = "1.0.39"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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|
||||
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dependencies = [
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"proc-macro2",
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"quote",
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@ -5632,9 +5642,9 @@ dependencies = [
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[[package]]
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name = "trash"
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version = "1.1.0"
|
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version = "1.1.1"
|
||||
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||||
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|
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dependencies = [
|
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]
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@ -5875,9 +5885,9 @@ checksum = "6454029bf181f092ad1b853286f23e2c507d8e8194d01d92da4a55c274a5508c"
|
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|
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[[package]]
|
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name = "vec-arena"
|
||||
version = "0.5.0"
|
||||
version = "0.5.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "17dfb54bf57c9043f4616cb03dab30eff012cc26631b797d8354b916708db919"
|
||||
checksum = "8cb18268690309760d59ee1a9b21132c126ba384f374c59a94db4bc03adeb561"
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[[package]]
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name = "vec_map"
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@ -419,6 +419,7 @@ pub fn create_default_context(
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whole_stream_command(MathStddev),
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whole_stream_command(MathSummation),
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whole_stream_command(MathVariance),
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whole_stream_command(MathProduct),
|
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// File format output
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whole_stream_command(To),
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whole_stream_command(ToCSV),
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@ -199,8 +199,8 @@ pub(crate) use last::Last;
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pub(crate) use lines::Lines;
|
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pub(crate) use ls::Ls;
|
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pub(crate) use math::{
|
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Math, MathAverage, MathEval, MathMaximum, MathMedian, MathMinimum, MathMode, MathStddev,
|
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MathSummation, MathVariance,
|
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Math, MathAverage, MathEval, MathMaximum, MathMedian, MathMinimum, MathMode, MathProduct,
|
||||
MathStddev, MathSummation, MathVariance,
|
||||
};
|
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pub(crate) use merge::Merge;
|
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pub(crate) use mkdir::Mkdir;
|
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|
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@ -5,6 +5,7 @@ pub mod max;
|
||||
pub mod median;
|
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pub mod min;
|
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pub mod mode;
|
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pub mod product;
|
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pub mod stddev;
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pub mod sum;
|
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pub mod variance;
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@ -19,6 +20,7 @@ pub use max::SubCommand as MathMaximum;
|
||||
pub use median::SubCommand as MathMedian;
|
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pub use min::SubCommand as MathMinimum;
|
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pub use mode::SubCommand as MathMode;
|
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pub use product::SubCommand as MathProduct;
|
||||
pub use stddev::SubCommand as MathStddev;
|
||||
pub use sum::SubCommand as MathSummation;
|
||||
pub use variance::SubCommand as MathVariance;
|
||||
|
||||
126
crates/nu-cli/src/commands/math/product.rs
Normal file
126
crates/nu-cli/src/commands/math/product.rs
Normal file
@ -0,0 +1,126 @@
|
||||
use crate::commands::math::reducers::{reducer_for, Reduce};
|
||||
use crate::commands::math::utils::run_with_function;
|
||||
use crate::commands::WholeStreamCommand;
|
||||
use crate::prelude::*;
|
||||
use nu_errors::ShellError;
|
||||
use nu_protocol::{
|
||||
hir::{convert_number_to_u64, Number},
|
||||
Primitive, Signature, UntaggedValue, Value,
|
||||
};
|
||||
|
||||
pub struct SubCommand;
|
||||
|
||||
#[async_trait]
|
||||
impl WholeStreamCommand for SubCommand {
|
||||
fn name(&self) -> &str {
|
||||
"math product"
|
||||
}
|
||||
|
||||
fn signature(&self) -> Signature {
|
||||
Signature::build("math product")
|
||||
}
|
||||
|
||||
fn usage(&self) -> &str {
|
||||
"Finds the product of a list of numbers or tables"
|
||||
}
|
||||
|
||||
async fn run(
|
||||
&self,
|
||||
args: CommandArgs,
|
||||
registry: &CommandRegistry,
|
||||
) -> Result<OutputStream, ShellError> {
|
||||
run_with_function(
|
||||
RunnableContext {
|
||||
input: args.input,
|
||||
registry: registry.clone(),
|
||||
shell_manager: args.shell_manager,
|
||||
host: args.host,
|
||||
ctrl_c: args.ctrl_c,
|
||||
current_errors: args.current_errors,
|
||||
name: args.call_info.name_tag,
|
||||
raw_input: args.raw_input,
|
||||
},
|
||||
product,
|
||||
)
|
||||
.await
|
||||
}
|
||||
|
||||
fn examples(&self) -> Vec<Example> {
|
||||
vec![Example {
|
||||
description: "Get the product of a list of numbers",
|
||||
example: "echo [2 3 3 4] | math product",
|
||||
result: Some(vec![UntaggedValue::int(72).into()]),
|
||||
}]
|
||||
}
|
||||
}
|
||||
|
||||
fn to_byte(value: &Value) -> Option<Value> {
|
||||
match &value.value {
|
||||
UntaggedValue::Primitive(Primitive::Int(num)) => Some(
|
||||
UntaggedValue::Primitive(Primitive::Filesize(convert_number_to_u64(&Number::Int(
|
||||
num.clone(),
|
||||
))))
|
||||
.into_untagged_value(),
|
||||
),
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
|
||||
/// Calculate product of given values
|
||||
pub fn product(values: &[Value], name: &Tag) -> Result<Value, ShellError> {
|
||||
let prod = reducer_for(Reduce::Product);
|
||||
|
||||
let first = values.get(0).ok_or_else(|| {
|
||||
ShellError::unexpected("Cannot perform aggregate math operation on empty data")
|
||||
})?;
|
||||
|
||||
match first {
|
||||
v if v.is_filesize() => to_byte(&prod(
|
||||
UntaggedValue::int(1).into_untagged_value(),
|
||||
values
|
||||
.iter()
|
||||
.map(|v| match v {
|
||||
Value {
|
||||
value: UntaggedValue::Primitive(Primitive::Filesize(num)),
|
||||
..
|
||||
} => UntaggedValue::int(*num as usize).into_untagged_value(),
|
||||
other => other.clone(),
|
||||
})
|
||||
.collect::<Vec<_>>(),
|
||||
)?)
|
||||
.ok_or_else(|| {
|
||||
ShellError::labeled_error(
|
||||
"could not convert to decimal",
|
||||
"could not convert to decimal",
|
||||
&name.span,
|
||||
)
|
||||
}),
|
||||
|
||||
v if v.is_none() => prod(
|
||||
UntaggedValue::int(1).into_untagged_value(),
|
||||
values
|
||||
.iter()
|
||||
.map(|v| match v {
|
||||
Value {
|
||||
value: UntaggedValue::Primitive(Primitive::Nothing),
|
||||
..
|
||||
} => UntaggedValue::int(1).into_untagged_value(),
|
||||
other => other.clone(),
|
||||
})
|
||||
.collect::<Vec<_>>(),
|
||||
),
|
||||
_ => prod(UntaggedValue::int(1).into_untagged_value(), values.to_vec()),
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::SubCommand;
|
||||
|
||||
#[test]
|
||||
fn examples_work_as_expected() {
|
||||
use crate::examples::test as test_examples;
|
||||
|
||||
test_examples(SubCommand {})
|
||||
}
|
||||
}
|
||||
@ -47,6 +47,7 @@ pub fn reducer_for(
|
||||
)),
|
||||
Reduce::Minimum => Box::new(|_, values| min(values)),
|
||||
Reduce::Maximum => Box::new(|_, values| max(values)),
|
||||
Reduce::Product => Box::new(|_, values| product(values)),
|
||||
}
|
||||
}
|
||||
|
||||
@ -54,6 +55,7 @@ pub enum Reduce {
|
||||
Summation,
|
||||
Minimum,
|
||||
Maximum,
|
||||
Product,
|
||||
Default,
|
||||
}
|
||||
|
||||
@ -133,3 +135,34 @@ pub fn min(data: Vec<Value>) -> Result<Value, ShellError> {
|
||||
tag: Tag::unknown(),
|
||||
})
|
||||
}
|
||||
|
||||
pub fn product(data: Vec<Value>) -> Result<Value, ShellError> {
|
||||
if data.is_empty() {
|
||||
return Err(ShellError::unexpected(ERR_EMPTY_DATA));
|
||||
}
|
||||
|
||||
let mut prod = UntaggedValue::int(1).into_untagged_value();
|
||||
for value in data {
|
||||
match value.value {
|
||||
UntaggedValue::Primitive(_) => {
|
||||
prod = match compute_values(Operator::Multiply, &prod, &value) {
|
||||
Ok(v) => v.into_untagged_value(),
|
||||
Err((left_type, right_type)) => {
|
||||
return Err(ShellError::coerce_error(
|
||||
left_type.spanned_unknown(),
|
||||
right_type.spanned_unknown(),
|
||||
))
|
||||
}
|
||||
};
|
||||
}
|
||||
_ => {
|
||||
return Err(ShellError::labeled_error(
|
||||
"Attempted to compute the product of a value that cannot be multiplied.",
|
||||
"value appears here",
|
||||
value.tag.span,
|
||||
))
|
||||
}
|
||||
}
|
||||
}
|
||||
Ok(prod)
|
||||
}
|
||||
|
||||
@ -9,6 +9,7 @@ Currently the following functions are implemented:
|
||||
* `math max`: Finds the maximum within a list of numbers or tables
|
||||
* `math median`: Finds the median of a list of numbers or tables
|
||||
* `math sum`: Finds the sum of a list of numbers or tables
|
||||
* `math product`: Finds the product of a list of numbers or tables
|
||||
|
||||
However, the mathematical functions like `min` and `max` are more permissive and also work on `Dates`.
|
||||
|
||||
@ -90,6 +91,11 @@ To get the average of the file sizes in a directory, simply pipe the size column
|
||||
───┴──────────
|
||||
```
|
||||
|
||||
```shell
|
||||
> echo [2 3 3 4] | math product
|
||||
72
|
||||
```
|
||||
|
||||
### Dates
|
||||
|
||||
```shell
|
||||
|
||||
Loading…
Reference in New Issue
Block a user