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#10 in #iterable
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Module :: winterval
Integer interval adapter for both Range and RangeInclusive.
Let's assume you have a function which should accept Interval. But you don't want to limit caller of the function to either half-open interval core::ops::Range
or closed one core::ops::RangeInclusive
you want allow to use anyone of iterable interval. To make that work smoothly use IterableInterval
. Both core::ops::Range
and core::ops::RangeInclusive
implement the trait, also it's possible to work with non-iterable intervals, like ( -Infinity .. +Infinity ).
Basic use-case.
use winterval::IterableInterval;
fn f1( interval : impl IterableInterval )
{
for i in interval
{
println!( "{i}" );
}
}
// Calling the function either with
// half-open interval `core::ops::Range`.
f1( 0..=3 );
// Or closed one `core::ops::RangeInclusive`.
f1( 0..4 );
More flexibility
If you need more flexibility in defining intervals, you can convert a tuple of endpoints to an interval.
use winterval::{ IterableInterval, IntoInterval, Bound };
fn f1( interval : impl IterableInterval )
{
for i in interval
{
println!( "{i}" );
}
}
// Calling the function either with
// half-open interval `core::ops::Range`.
f1( 0..=3 );
// Or closed one `core::ops::RangeInclusive`.
f1( 0..4 );
// Alternatively you construct your custom interval from a tuple.
f1( ( 0, 3 ).into_interval() );
f1( ( Bound::Included( 0 ), Bound::Included( 3 ) ).into_interval() );
// All the calls to the function `f1`` perform the same task,
// and the output is exactly identical.
Non-iterable intervals
You may also use the crate to specify non-iterable intervals. Non-iterable intervals have either one or several unbound endpoints. For example, interval core::ops::RangeFull
has no bounds and represents the range from minus infinity to plus infinity.
use winterval::{ NonIterableInterval, IntoInterval, Bound };
fn f1( interval : impl NonIterableInterval )
{
println!( "Do something with this {:?} .. {:?} interval", interval.left(), interval.right() );
}
// Iterable/bound interval from tuple.
f1( ( Bound::Included( 0 ), Bound::Included( 3 ) ).into_interval() );
// Non-iterable/unbound interval from tuple.
f1( ( Bound::Included( 0 ), Bound::Unbounded ).into_interval() );
// Non-iterable/unbound interval from `core::ops::RangeFrom`.
f1( 0.. );
// Non-iterable/unbound interval from `core::ops::RangeFull`
// what is ( -Infinity .. +Infinity ).
f1( .. );
To add to your project
cargo add interval_adaptor
Try out from the repository
git clone https://github.com/Wandalen/wTools
cd wTools
cargo run --example winterval_trivial