鉴于 b数据类型采用无固定变量的方法,可确定何为2或2^n........2、4、8、16、32等。 我知道一种使用假肢的方式,如果说的话,但我期望发言一行。
What is the use of default keyword in C#? Is it introduced in C# 3.0 ?
鉴于 b数据类型采用无固定变量的方法,可确定何为2或2^n........2、4、8、16、32等。 我知道一种使用假肢的方式,如果说的话,但我期望发言一行。
http://graphics.stanford.edu/~seander/bithacks.html Bit:
uint v; // we want to see if v is a power of 2
bool f; // the result goes here
f = (v != 0) && ((v & (v - 1)) == 0);
如果数字的标识(基准2)为ger。
C#中一条:
Math.Log(x, 2) % 1 == 0
善待行动更是徒劳无益的,但 lo情听任谁必须维持该守则。
bool powerOfTwo = (unchecked(n & (n-1)) == 0) && (n != 0)
bool answer = ((n & ~(n-1)) == n && n!=0);
这使我投了所有的基本测试。
这似乎很好。
What is the use of default keyword in C#? Is it introduced in C# 3.0 ?
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