zhy0216

export abstract class Either<L, R> {
  left!: L;

  right!: R;
  static Right = <T>(v: T) => new Right(v);
  static Left = <T>(v: T) => new Left(v);

  abstract map<T>(f: (a: R) => T): Either<L, T>;
  abstract flatMap<T>(f: (a: R) => Either<L, T>): Either<L, T>;
  abstract orElse<T>(a: Either<L, T>): Either<L, R>;

zhy0216

// i tried to add retry button on antd upload list
// but no easy way to do it
// so i hack it in the following way
// the idea is interesting because i am kind of "modifying" React Node children

import produce from "immer"

const itemRender = (originNode: React.ReactElement, file: UploadFile, fileList: UploadFile[]) => {
  if(file.status === "error") {
    const {prefix} = this.props

zhy0216

def camel_to_snake_case(name: str) -> str:
    #  ord('a') == 97
    r = []
    new_group = [name[0].lower()]
    for c in name[1:]:
        if 97 <= ord(c) <= 122:
            new_group.append(c)
        else:
            r.append("".join(new_group))
            new_group = [c.lower()]

zhy0216

class Solution(object):
    def invertTree(self, root):
        """
        :type root: TreeNode
        :rtype: TreeNode
        """
        if root is None:
            return root
            
        if root.left:

zhy0216

$(function(){

	var threadNames = [];
	$('th').each(function(i){
		threadNames.push($(this).html());
	});

	var style = document.createElement('style');
	style.type = 'text/css';
	style.innerHTML = "@media "+

zhy0216

# copy from easy_thumbnails
from PIL import Image, ImageChops

def is_transparent(image):
    """
    Check to see if an image is transparent.
    """
    if not isinstance(image, Image.Image):
        # Can only deal with PIL images, fall back to the assumption that that
        # it's not transparent.

zhy0216

def gen_permutation(string):
    if len(string) == 1:
        yield string

    for char in string:
        rest = string.replace(char, "")
        for p_string in gen_permutation(rest):
            yield char + p_string

zhy0216

# -*- coding: utf-8 -*-

import codecs


STATE = "IDEL" # INSERT, SEQUENCE


f = open("1.sql", "r")
f_w = codecs.open("test.sql", 'w', 'utf-8')

zhy0216

ngrok: https://ngrok.com/              # Introspected tunnels to localhost

zhy0216

Redressed: [https://www.google.com/fonts/specimen/Redressed](https://www.google.com/fonts/specimen/Redressed)