b2977053’s gists

b2977053 / C Console Application 2017 .gitignore

Created March 19, 2020 06:02


	## Ignore Visual Studio temporary files, build results, and
	## files generated by popular Visual Studio add-ons.

	# User-specific files
	*.suo
	*.user
	*.userosscache
	*.sln.docstates

b2977053 / willwill_git_day08.txt

Last active March 19, 2020 10:12

b2977053 / willwill_git_day18.txt

Created March 19, 2020 05:46

b2977053 / 20200317005506-262103.html

Last active March 18, 2020 03:46




	<!DOCTYPE html>
	<html lang="zh-Hant-TW">
	<head id="Head1" prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb#">
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
	<title>快評》陳時中玻璃心 - 短評 - 言論</title>
	<meta name="viewport" content="width=device-width, initial-scale=1.0">

b2977053 / sys.databases_0001

Last active March 10, 2020 09:40

	```sql
	SELECT name AS [Database Name],
	recovery_model_desc AS [Recovery Model] FROM sys.databases
	GO
	```

	![](https://cdn.cacher.io/attachments/u/3bjrfdy09ammu/Ou04mhY5rHJqiFDmgKIX81Dfab70nKCM/yy9s57d5s.png)

b2977053 / RxJS_Q-001.js

Created February 29, 2020 06:11

	//1. 正常情況
	var people = [
	{name: 'Anna', score: 100, subject: 'English'},
	{name: 'Anna', score: 90, subject: 'Math'},
	{name: 'Anna', score: 96, subject: 'Chinese' },
	{name: 'Jerry', score: 80, subject: 'English'},
	{name: 'Jerry', score: 100, subject: 'Math'},
	{name: 'Jerry', score: 90, subject: 'Chinese' },
	];
	var source = Rx.Observable

b2977053 / RxJS_Creation_Operator_withLatestFrom.js

Created February 28, 2020 06:57

	// Operators - withLatestFrom
	var main = Rx.Observable.from([1,2,3,4,5]).zip(Rx.Observable.interval(500), (x, y) => x);
	var some = Rx.Observable.from([0,1,0,0,0,1]).zip(Rx.Observable.interval(300), (x, y) => x);

	var example = main.withLatestFrom(some, (x, y) => {
	return y === 1 ? x*10 : x;
	});

	example.subscribe({
	next: (value) => { console.log(value); },

b2977053 / RxJS_Creation_Operator_zip.js

Created February 28, 2020 06:56

	// Operators - zip
	var source = Rx.Observable.interval(500).take(3);
	var newest = Rx.Observable.interval(300).take(6);

	var example = source.zip(newest, (x, y) => x + y);

	example.subscribe({
	next: (value) => { console.log(value); },
	error: (err) => { console.log('Error: ' + err); },
	complete: () => { console.log('complete'); }

b2977053 / RxJS_Creation_Operator_combineLatest.js

Created February 28, 2020 06:55

	// Operators - combineLatest
	/*
	同時執行多個 observable 實例，
	且湊齊所有的 next 才會執行 Callack Function
	每湊齊一次，執行一次 Callack Function
	其中一個 observable 只要一有值，就會保留(延續)，直到被自己覆蓋。

	適合用在多 observable，只會變動其中一個 observable，但又要湊齊變數。
	*/
	var source = Rx.Observable.interval(500).take(3);

b2977053 / RxJS_Creation_Operator_from.js

Last active February 26, 2020 15:11

	//Creation Operator - from 輸入陣列 or 字串 or Promise 物件

	var arr = ['Jerry', 'Anna', 2016, 2017, '30 days']
	var source = Rx.Observable.from(arr);

	source.subscribe({
	next: function(value) {
	console.log(value)
	},
	complete: function() {