在C#原始大小布尔 [英] Primitive Boolean size in C#
问题描述
如何在C#中布尔变量存储在内存中?也就是说,它们是存储为字节和其他7位被浪费,或者,在阵列的情况下,它们是组合成布尔值1字节块
How are boolean variables in C# stored in memory? That is, are they stored as a byte and the other 7 bits are wasted, or, in the case of arrays, are they grouped into 1-byte blocks of booleans?
这回答关于Java的同样的问题(<一个href=\"http://stackoverflow.com/questions/1907318/java-boolean-primitive-type-size\">http://stackoverflow.com/questions/1907318/java-boolean-primitive-type-size).是Java和C#在这方面一样吗?
This answers the same question regarding Java (http://stackoverflow.com/questions/1907318/java-boolean-primitive-type-size). Are Java and C# the same in this regard?
推荐答案
在C#中,肯定的位的默认情况下不包装,所以多个布尔的字段的将每取1个字节。您可以使用 BitVector32
, BitArray
,或者干脆按位运算来减少这方面的开销。由于的变量的我似乎记得他们采取4个字节(如 INT
= 的Int32
基本处理)。
In C#, certainly the bits aren't packed by default, so multiple bool fields will each take 1 byte. You can use BitVector32
, BitArray
, or simply bitwise arithmetic to reduce this overhead. As variables I seem to recall they take 4 bytes (essentially handled as int
= Int32
).
例如,下面的套 I
4
struct Foo
{
public bool A, B, C, D;
}
static unsafe void Main()
{
int i = sizeof(Foo);
}
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