Matlab&;及<;操作人员
在这个表达式中Matlab&;及<;操作人员,matlab,Matlab,在这个表达式中 lmin=lminflag & ~kmod & actminsub<nsm*pminu & actminsub>pminu; lmin=lminflag&~kmod&actminsubpminu; &运算符类似于按位AND运算符吗?lminflag和kmod都是逻辑1或0作为元素的数组,lmin也可以是1或0。是 &是一个per元素和运算符 &&是一个标量AND运算符,有条件地执行语句的其余部分 例如,假设: a = true; b = f
lmin=lminflag & ~kmod & actminsub<nsm*pminu & actminsub>pminu;
lmin=lminflag&~kmod&actminsubpminu;
&运算符类似于按位AND运算符吗?lminflag和kmod都是逻辑1或0作为元素的数组,lmin也可以是1或0。是
&
是一个per元素和运算符李>
&&
是一个标量AND运算符,有条件地执行语句的其余部分a = true;
b = false;
aa = [true false];
bb = [true true];
fnA = @()rand>0.5; %An anonymous function returning true half the time
然后:
然而
aa & bb; %this an error
aa && bb; %returns the array [true false]
更有趣的是,当操作数是函数时,会产生副作用
b & fnA; %Returns false, and the `rand` function is called (including a small performance hit, and an update to the random state)
b && fnA; %Returns false, and the `rand` function was not called (since `b` is false, the actual value of `fnA` doesn;t effect the result
对
&
是一个per元素和运算符李>
&&
是一个标量AND运算符,有条件地执行语句的其余部分a = true;
b = false;
aa = [true false];
bb = [true true];
fnA = @()rand>0.5; %An anonymous function returning true half the time
然后:
然而
aa & bb; %this an error
aa && bb; %returns the array [true false]
更有趣的是,当操作数是函数时,会产生副作用
b & fnA; %Returns false, and the `rand` function is called (including a small performance hit, and an update to the random state)
b && fnA; %Returns false, and the `rand` function was not called (since `b` is false, the actual value of `fnA` doesn;t effect the result
+1.虽然是小注释:注意
rand>0.5代码>的速度至少是`逻辑(轮(rand))的两倍`+1.不过要注意的是,rand>0.5代码>的速度至少是`逻辑(轮(rand))的两倍`