Memotest | Online game - HTML5 CSS Sass JavaScript JQuery | Game Engine library
kandi X-RAY | Memotest Summary
kandi X-RAY | Memotest Summary
Online game - HTML5 + CSS + Sass + JavaScript + JQuery
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Memotest
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QUESTION
I bumped across a curiosity of where React.memo behaves as expected today.
It seems that React.memo doesn't work in nested functional components, but does work in the components main return and in nested functions that return a React.memo component.
Is this intended behaviour or is there another way to make React.memo work with nested functional components?
https://codesandbox.io/s/sweet-bhaskara-kbnlg?file=/src/memoTest.js:0-451
...ANSWER
Answered 2021-Apr-10 at 16:34The problem here is that you are defining ComponentOne inside your component. So when React tries to re-render it sees that the ComponentOne Reference in previous re-render was different than the one in the current re-render and hence this component is remounted. Hence the memo doesn't work
However when you call it like a function, it returns the same instance of MemoTest
, so a re-render is supposed to happen which is prevented by memo
as props do not change
To make it work like you have define it currently, you should move the functional component definition out of the App Component
QUESTION
I try C++ Driver 3.1.2, the code still crashed in client deconstructor
MongoMgr.h
...ANSWER
Answered 2018-Jan-29 at 16:26This line looks suspicious to me: m_ptrPool = boost::shared_ptr{uri};
Can you change that to m_ptrPool = boost::make_shared(uri);
?
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