Bag class
Bag - A general container of arbitrary objects.
The Bag container is a collection of various type-erased objects that can be looked up by their original type. This is useful for things like passing around a collection of various options to different subsystems without needing to have cross dependencies between them.
Public functions
- auto empty() const -> bool
- Returns true if there are no items in the bag.
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template<typename T>void set(const T& item)
- Adds or overwrites an existing element of type T in the bag (making a copy in the process).
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template<typename T>void set(T&& item)
- Adds or overwrites an existing element of type T in the bag (moving in the new item in the process).
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template<typename T>auto get() const -> const T*
- Gets an element of type T from the bag, if it exists.
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template<typename T>auto insertOrGet() -> T&
- Gets an element of type T from the bag, if it exists.
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template<typename T>auto getOrDefault() const -> T
- Gets an element of type T from the bag, if it exists.
Function documentation
template<typename T>
const T* slang::
Gets an element of type T from the bag, if it exists.
Otherwise returns nullptr.
template<typename T>
T& slang::
Gets an element of type T from the bag, if it exists.
Otherwise adds a default constructed element to the bag and returns a reference to it.
template<typename T>
T slang::
Gets an element of type T from the bag, if it exists.
Otherwise returns a default constructed T.