[#btck-Range-01]
= xref:btck.adoc[btck]::Range
:relfileprefix: ../
:mrdocs:

Read‐only random‐access view over an indexed C‐handle collection.

== Synopsis

Declared in `<kernel/bitcoinkernel_wrapper.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class Range;
----

== Description

Adapts a container that exposes `SizeFunc` and `GetFunc` into a standard range whose elements are lazily produced views.

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:btck/Range-01/const_iterator.adoc[`const_iterator`] 
| Const iterator alias (same as iterator).
| xref:btck/Range-01/difference_type.adoc[`difference_type`] 
| Signed distance between iterators.
| xref:btck/Range-01/iterator.adoc[`iterator`] 
| The range's iterator type.
| xref:btck/Range-01/value_type.adoc[`value_type`] 
| The element type produced by the accessor.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:btck/Range-01/2constructor.adoc[`Range`]         [.small]#[constructor]#
| Constructs a range viewing `container.`
| xref:btck/Range-01/at.adoc[`at`] 
| Returns the element at `index` with bounds checking.
| xref:btck/Range-01/back.adoc[`back`] 
| Returns the last element.
| xref:btck/Range-01/begin.adoc[`begin`] 
| Returns an iterator to the first element.
| xref:btck/Range-01/cbegin.adoc[`cbegin`] 
| Returns a const iterator to the first element.
| xref:btck/Range-01/cend.adoc[`cend`] 
| Returns a const iterator past the last element.
| xref:btck/Range-01/empty.adoc[`empty`] 
| Reports whether the range holds no elements.
| xref:btck/Range-01/end.adoc[`end`] 
| Returns an iterator past the last element.
| xref:btck/Range-01/front.adoc[`front`] 
| Returns the first element.
| xref:btck/Range-01/operator_subs.adoc[`operator[]`] 
| Returns the element at `index` without bounds checking.
| xref:btck/Range-01/size.adoc[`size`] 
| Returns the number of elements in the range.
|===



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