folly::operator<

Synopses

Declared in <folly/Expected.h>

Deleted to forbid ordering an Optional against a bare value.

template<class V>
bool
operator<(
    Optional<V> const& a,
    V const& other) = delete;

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Orders two Poly objects.

template<
    class I1,
    class I2>
requires detail::Orderable<I1, I2>::value
bool
operator<(
    Poly<I1> const& _this,
    Poly<I2> const& that);

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Less-than comparison forwarding to the underlying pointer.

template<
    typename PtrT,
    typename T,
    typename RhsNullHandlerT>
bool
operator<(
    T const& lhs,
    not_null<PtrT, RhsNullHandlerT> const& rhs);

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Less-than comparison forwarding to the underlying pointer.

template<
    typename PtrT,
    typename T,
    typename LhsNullHandlerT>
bool
operator<(
    not_null<PtrT, LhsNullHandlerT> const& lhs,
    T const& rhs);

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Compares two tapes lexicographically.

bool
operator<(
    tape const& x,
    tape const& y);

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Compares two huge page sizes by their size in bytes.

bool
operator<(
    HugePageSize const& a,
    HugePageSize const& b);

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Orders keys by level, then by option name.

bool
operator<(
    SocketOptionKey const& lhs,
    SocketOptionKey const& rhs);

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Orders two dynamics.

bool
operator<(
    dynamic const& a,
    dynamic const& b);

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Order two iterators by position.

bool
operator<(
    down const lhs,
    down const rhs) noexcept;

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Orders None against an Optional; None sorts before any value.

template<class V>
constexpr
bool
operator<(
    None none,
    Optional<V> const& a) noexcept;

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Orders an Optional against None; nothing sorts before None.

template<class V>
constexpr
bool
operator<(
    Optional<V> const& a,
    None none) noexcept;

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Deleted to forbid ordering a bare value against an Optional.

template<class V>
bool
operator<(
    V const& other,
    Optional<V> const& a) = delete;

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Orders two views lexicographically.

bool
operator<(
    self lhs,
    self rhs) noexcept;

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Orders two Optionals; an empty Optional sorts before any value.

template<
    class U,
    class V>
constexpr
bool
operator<(
    Optional<U> const& a,
    Optional<V> const& b);

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Deleted: comparing a bare value with an Expected is not allowed.

template<
    class Value,
    class Error>
bool
operator<(
    Value const& other,
    Expected<Value, Error> const& exp) = delete;

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Deleted: comparing an Expected with a bare value is not allowed.

template<
    class Value,
    class Error>
bool
operator<(
    Expected<Value, Error> const& exp,
    Value const& other) = delete;

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Orders two Expected values, treating errors as less than values.

template<
    class Value,
    class Error>
bool
operator<(
    Expected<Value, Error> const& lhs,
    Expected<Value, Error> const& rhs)
requires IsLessThanComparable<Value>::value;

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Orders two Expected values, treating errors as less than values.

bool
operator<(
    Expected<Val, Err> const& lhs,
    Expected<Val, Err> const& rhs)
requires IsLessThanComparable<Val>::value;

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Returns true if x is ordered before y.

constexpr
bool
operator<(
    index_iterator const& x,
    index_iterator const& y);

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operator< through conversion for Range<const char*>

template<
    class T,
    class U>
bool
operator<(
    T const& lhs,
    U const& rhs)
requires detail::ComparableAsStringPiece<T, U>::value;

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Test whether one range is lexicographically less than another.

template<class Iter>
bool
operator<(
    Range<Iter> const& lhs,
    Range<Iter> const& rhs);

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Orders a std::basic_string before an fbstring.

template<
    typename E,
    class T,
    class A,
    class S,
    class A2>
bool
operator<(
    std::basic_string<E, T, A2> const& lhs,
    basic_fbstring<E, T, A, S> const& rhs);

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Orders an fbstring before a std::basic_string.

template<
    typename E,
    class T,
    class A,
    class S,
    class A2>
bool
operator<(
    basic_fbstring<E, T, A, S> const& lhs,
    std::basic_string<E, T, A2> const& rhs);

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