sort out the notes from a year ago, and see a piece of code: (>=>) :: Monad m => (a -> m b) -> (b -> m c) -> (a -> m c) f >=> g = x -> f x >>= g is just written differently ( > = > and @ > ). ther...
suppose I have an integer x , and I want to judge whether the integer is in the interval [1, limit] . In Haskell, I can think of two schemes: x > = 1 and x < = limit elem x [1..limit] I used the Profiling, code of GCI as follows: I w...
the Antd form component is rewritten with React Hooks. How do I get the value of the form? For example, TextareaItem component of antd-mobile, and rewrite it with React Hooks. The semi-finished code is as follows: import React, { useState, useEffect...
if ("a" in window) { var a = 1; console.log(a) } console.log(a); function a() { console.log(this); } a.call(null); I don t understand why this error was reported. Ask for advice ...
such as the problem, the need is that after the page is loaded, the input automatically gets the focus and the soft keyboard pops up automatically. The problem now is: 1. Unable to pop up soft keyboard 2.ios iPhone browser cannot automatically get foc...
elementUI is used in the project. How to implement the default deployment of the first level after the initial load? ...
the running environment is ubuntu 16.04 python 3.5.2 cd project folder virtualenv-p python3 env source env bin activate pip install-r requirements.txt requirements.txt file contents are as follows: h5py==2.7.1 Keras==2.0.6 numpy==1.13.3 olefi...