I was going through some VC++ code in a large code-base and came across this: <pre class="prettyprint"><code> if (nState & TOOL_TIPS_VISIBLE) nState &= ~TOOL_TIPS_VISIBLE; else nState |= TOOL_TIPS_VISIBLE; break; </code></pre> Is there any such operator as &= or |= in C++? What is it for? Is it the equivalent of <code>nState = nState & ~TOOL_TIPS_VISIBLE</code>?

What is &= and |=

I was going through some VC++ code in a large code-base and came across this:

    if (nState & TOOL_TIPS_VISIBLE)
        nState &= ~TOOL_TIPS_VISIBLE;
    else
        nState |= TOOL_TIPS_VISIBLE;
    break;

Is there any such operator as &= or |= in C++? What is it for?
Is it the equivalent of nState = nState & ~TOOL_TIPS_VISIBLE?

776

asked Nov 04 '11 08:11

x &= y is the same as x = x & y
x |= y is the same as x = x | y

answered Oct 08 '22 19:10

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