这种物体有什么好名字呢？
我有一个元素 ID 与每个元素计数的关联数组。 例如（在Python中）：
myObject = { 'a': 5, 'b': 3 }
它应该支持加法和减法。例如：
myObject - { 'a': 3 }
应评估为：
{ 'a': 2, 'b': 3 }
对于上下文，这是支持成本系统。每个元素都是一种资源类型，数量是实体拥有该资源的数量。用户可以将其中一个对象作为某种库存，但是一个项目可能将其中之一作为其成本。结果，用户对象可以简单地从他们的库存中减去该物品的成本。
我只是想为这种物体想一个好的术语。
I have an associative array of element IDs to counts of each element.
e.g. (in python):
myObject = { 'a': 5, 'b': 3 }
It should support addition and subtraction. For example:
myObject - { 'a': 3 }
Should evaluate to:
{ 'a': 2, 'b': 3 }
For context, this is supporting a costs system. Each element is a resource type, and the quantity is how much of that resource the entity owns. A user would have one of these objects as an inventory of some kind, but then an item might have one of these as its cost. As a result, the user object can simply subtract the item's cost from their inventory.
I'm just trying to think of a good term for this kind of object.
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这种集合类型已经存在于 Python 2.7 和 3.1 中。它称为计数器。
This collection type is already in Python 2.7 and 3.1. It's called a Counter.
我猜我会选择
ResourceVector或ResourceTuple。I'd go for
ResourceVectororResourceTupleI guess.我将其称为矩阵，而不知道您想要做什么的程度。
I would call that a Matrix, without knowing the extent of what you want to do.