render

来源： https://stackoverflow.com/questions/63351737/rendering-a-ggplot2-and-a-plotly-object-in-an-r-shiny-app

来源： https://stackoverflow.com/questions/63351737/rendering-a-ggplot2-and-a-plotly-object-in-an-r-shiny-app

来源： https://stackoverflow.com/questions/63389766/reactjs-how-to-fetch-inside-a-child-component-with-details-passed-on-by-props

来源： https://stackoverflow.com/questions/63389766/reactjs-how-to-fetch-inside-a-child-component-with-details-passed-on-by-props

问题 I am making circle menu, so I use SVG to create a circle, and now I want to show a link with some image inside of part of the circle. How i can do it? My code - render(){ return( <svg id={"menuLevel" + index} width={200} height={200}> <path fill="white" stroke="rgba(0,0,0,0.2)" strokeWidth="2" d={"M"+width+","+width+" L"+previousX+", "+previousY+" A"+width+","+width+" 0 0,0 "+x+", "+y+" z"}></path> </svg> ) } I tried something like this - <path fill="white" stroke="rgba(0,0,0,0.2)"

问题 In my React Native app, if I have a stack navigator and I navigate from screenA to screenB with this.props.navigation.navigate('screenB') , is it possible that screenA would ever get un-mounted? The reason I ask is that when screenA mounts, I make an API call that will load a resource that will be available in all screens via Redux. I might navigate to screenB while that API call is still in progress. So I want to know if it's possible that my navigating to screenB too soon could prevent the

问题 I'm trying to blit an image to the screen when the event K_SPACE is triggered. However, when I press space nothing happens. I've tried moving where the screen is updated or flipped, but i've hit a brick wall. Here is my code: def Play(): background = pygame.image.load(bifPlay).convert() char = pygame.image.load(mif).convert_alpha() bullet = pygame.image.load(bulletLoad).convert() zombie = pygame.image.load(zombieLoad).convert_alpha() #converting images needed so pygame can use them x,y = 115

问题 I'm trying to blit an image to the screen when the event K_SPACE is triggered. However, when I press space nothing happens. I've tried moving where the screen is updated or flipped, but i've hit a brick wall. Here is my code: def Play(): background = pygame.image.load(bifPlay).convert() char = pygame.image.load(mif).convert_alpha() bullet = pygame.image.load(bulletLoad).convert() zombie = pygame.image.load(zombieLoad).convert_alpha() #converting images needed so pygame can use them x,y = 115

问题 I'm trying to blit an image to the screen when the event K_SPACE is triggered. However, when I press space nothing happens. I've tried moving where the screen is updated or flipped, but i've hit a brick wall. Here is my code: def Play(): background = pygame.image.load(bifPlay).convert() char = pygame.image.load(mif).convert_alpha() bullet = pygame.image.load(bulletLoad).convert() zombie = pygame.image.load(zombieLoad).convert_alpha() #converting images needed so pygame can use them x,y = 115

问题 I'm using useState() in function component and first render is calling twice. Is it correct or mistake? If it is correct why does it render twice? setCount renders the component twice too. function Example() { const [count, setCount] = useState(0); console.log("render"); return ( <div> <p>You clicked {count} times</p> <button onClick={() => setCount(count + 1)}> Click me </button> </div> ); } ReactDOM.render(<Example />, document.getElementById('uu5')); Thanks 回答1: Problem is in React