Enum ndarray::SliceOrIndex[][src]

pub enum SliceOrIndex {
    Slice {
        start: isize,
        end: Option<isize>,
        step: isize,
    },
    Index(isize),
}
Expand description

A slice (range with step) or an index.

See also the s![] macro for a convenient way to create a &SliceInfo<[SliceOrIndex; n], D>.

Examples

SliceOrIndex::Index(a) is the index a. It can also be created with SliceOrIndex::from(a). The Python equivalent is [a]. The macro equivalent is s![a].

SliceOrIndex::Slice { start: 0, end: None, step: 1 } is the full range of an axis. It can also be created with SliceOrIndex::from(..). The Python equivalent is [:]. The macro equivalent is s![..].

SliceOrIndex::Slice { start: a, end: Some(b), step: 2 } is every second element from a until b. It can also be created with SliceOrIndex::from(a..b).step_by(2). The Python equivalent is [a:b:2]. The macro equivalent is s![a..b;2].

SliceOrIndex::Slice { start: a, end: None, step: -1 } is every element, from a until the end, in reverse order. It can also be created with SliceOrIndex::from(a..).step_by(-1). The Python equivalent is [a::-1]. The macro equivalent is s![a..;-1].

Variants

Slice

Fields

start: isize
end: Option<isize>
step: isize

A range with step size. end is an exclusive index. Negative begin or end indexes are counted from the back of the axis. If end is None, the slice extends to the end of the axis.

Index(isize)

Tuple Fields

0: isize

A single index.

Implementations

Returns true if self is a Slice value.

Returns true if self is an Index value.

Returns a new SliceOrIndex with the given step size (multiplied with the previous step size).

step must be nonzero. (This method checks with a debug assertion that step is not zero.)

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.