我想要构造一个类来平平python列表。我可以通过像这样定义函数来实现它;
liste=[[1,2],3,[4],[[5],6]]
flatLIST=[]
def recur(a):
if (type(a)==list):
for i in a:
recur(i)
else:
flatLIST.append(a)
recur(liste)
flatLIST
1,2,3,4,5,6
但是当我不能通过构造一个类来实现它的时候。
class flatYVZ():
def __init__(self,list
我想在FlatList中渲染一个页脚,但遇到了一些奇怪的问题:
constructor(props) {
super(props);
// bind this for these 4 functions, cause FlatList footer can not be render
this._renderFooter=this._renderFooter.bind(this)
this._onEndReached=this._onEndReached.bind(this)
this._separator = this._separator.bind
我的水平FlatList可以很好地处理虚拟数据,但当我试图从后端向FlatList传递数据时,它会返回错误scrollToIndex out of range: requested index -1 but minimum is 0。 数据在垂直FlatList中传递是正确的,但当我尝试使用水平try时,它给出了这个错误。 你认为我的水平FlatList代码有什么问题? useEffect(() => {
const getIndex = (placeholder = 0) => {
const index = places.findIndex(place
是否可以允许项溢出FlatList组件的容器?在本例中,FlatList中的项是常规的视图组件,它们内部有一个"popover“视图组件,我希望在FlatList容器的边界上显示该组件。 Here you can see the red boxes are clipped by the boundaries of the FlatList container This is what I'd like to achieve (red boxes (positioned absolute) are overflowing the boundaries of FlatList c
JSON结构:
sectionItems={key: ..., name: .., title: ..listOf 20 nested data }
data =
{
"sections": [...sectionItems of 50 items]
}
When displaying in the FlatList its rendering too slow,
<FlatList
renderItem={({item}) => <Section item={item} />}
initialNumToRender={l