Shuang Wu seanwu1105

RxJS WTF

`tap(_ => func())` != `mapTo(func())`

Assume func is a synchronized function. tap(_ => func()) will call the function lazily. However, mapTo(func()) will call the function eagerly.

`forkJoin`

forkJoin will not emit anything if the input is an empty array.
forkJoin only emit one value than complete.

Install macOS with Virtual Box in Ubuntu

Install Virtual Box 6.x

Download and install Virtual Box 6.x from the website.

Deal with Annoying Secure Boot

You have 2 options: disable secure boot or sign the kernel modules. We only mention how to sign kernel modules without disabling secure boot.

Change Timestamps in Windows

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Open PowerShell in the target directory. Normally, you can open PowerShell in current directory by holding shift and right-clicking the context menu Open PowerShell Here.

	data class RepositoryItem<T>(
	val value: T,
	val status: Adding \| AddingFailed \| Added \| Removing \| RemovingFailed

	override fun equals(other: RepositoryItem<T>) {
	return value == other.value
	}
	)

	interface ListRepository<T> {

	{
	"$schema": "http://json-schema.org/draft-07/schema",
	"type": "object",
	"description": "Assertion provided by Starling Capture.",
	"examples": [
	{
	"proof": {
	"hash": "b08714406df079733fdbc0566aa28ff4b20abd13e3a2042ddd214bc4d4f81f7c",
	"mimeType": "image/jpeg",
	"timestamp": 1600177819743

	{
	"$schema": "http://json-schema.org/draft-07/schema",
	"type": "object",
	"description": "Assertion provided by Starling Capture.",
	"examples": [
	{
	"device_board": "sdm845",
	"device_brand": "htc",
	"current_address": "No. 77, Jinshan North Road, Zhongzheng District, Taipei City, Taiwan 100",
	"current_gps_latitude": "25.045234",

	FROM ubuntu:latest

	SHELL ["/bin/bash", "-c"]

	RUN apt-get update && \
	apt-get install -y \
	git \
	build-essential \
	wget

	import timeit
	import collections
	import itertools

	import numpy as np
	from bitarray import bitarray as b


	def test_slice(data):
	for i in reversed(range(len(data))):

	import sys

	from PyQt5.QtCore import QThread
	from PyQt5.QtWidgets import (QApplication, QMainWindow, QPushButton,
	QComboBox, QWidget, QVBoxLayout)


	class Task(QThread):
	def run(self):
	print('task started')