individual::modify_proxy Class Reference

Public Member Functions
const individual &	self () const noexcept
auto &	genome () noexcept
value_type &	operator[] (std::size_t i) noexcept
std::size_t	size () const noexcept

Friends
class	individual

Detailed Description

Proxy granting controlled write access to an individual.

modify_proxy is a capability object created exclusively by individual::modify(). It provides temporary, scoped permission to mutate the internal genome of an individual.

The proxy must not escape the scope of the call to modify(). All class invariants of individual are guaranteed to hold again when individual::modify() returns.

Users must not assume any invariant holds while operating on the proxy, except those explicitly documented.

Member Function Documentation

operator[]()

value_type & individual::modify_proxy::operator[] ( std::size_t i )

inlinenodiscardnoexcept

Mutable access to a genome element.

Parameters

[in]

i

index of the gene to access

Returns

a mutable reference to the requested gene

Precondition

i < size()

Provides write access to the gene at position i. This function is only callable within the scope of individual::modify().

self()

const individual & individual::modify_proxy::self ( ) const

inlinenodiscardnoexcept

Access the owning individual in read-only mode.

Returns

a const reference to the owning individual

This allows inspection of the individual while mutation is in progress, without granting additional write access.

size()

std::size_t individual::modify_proxy::size ( ) const

inlinenodiscardnoexcept

Number of genes in the genome.

Returns

the size of the genome

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The documentation for this class was generated from the following file:

• individual.tcc