19.2 Array creation

最新推荐文章于 2023-07-17 17:05:33 发布

最新推荐文章于 2023-07-17 17:05:33 发布 · 114 阅读

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数组实例通过特定表达式或声明创建，创建时确定了其维度及大小并保持不变。无法更改现有数组实例的秩或调整其尺寸。

Array instances are created by array-creation-expressions (§14.5.10.2) or
by field or local variable
declarations that include an array-initializer (§19.6).
When an array instance is created, the rank and length of each dimension are
established and then remain
constant for the entire lifetime of the instance. In other words, it is not
possible to change the rank of an
existing array instance, nor is it possible to resize its dimensions.
An array instance is always of an array type. The System.Array type is an
abstract type that cannot be
instantiated.
Elements of arrays created by array-creation-expressions are always
initialized to their default value
(§12.2).