From : https://www.dcard.tw/f/tech_job/p/238586417?fbclid=IwAR2K0IMRpfuDvwwJV9ahFNPAioy6_MEaF8wAH13YDPUj27yRYTKcZSv_ri8

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#轉分享

這兩天在臉書上看到一篇科技業薪資整理文章，覺得很受用，跟卡友們分享（已經找不到原文連結了）

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From: https://mrtopstep.com/magic-t-theory/

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The History of T Theory

T Theory is a method of analyzing general investment trends using a time symmetry property I discovered in the early 1970’s. At that time the time symmetry was christened “The Law of Matched Trend Time” because it basically states the duration over which investors can obtain “superior equity returns” will always be equal to the previous time period in which returns were subnormal. A simpler way to put it is to say the market can only “make a strong run ” as long as it has previously ”rested”. As you might expect, the practical purpose of the theory is to anticipate the runs of “superior returns”. This time match property can be shown to be reasonably accurate and reliable historically so I have proposed as a natural property inherent in market trends but of course we have no real knowledge, so results can not be guaranteed. The time symmetry is most easily represented by the graphical “T” thus the name T Theory. In all instances the left side of the graphical T spans the market’s “rest period” while the right side spans the “ run period’ where returns should be the greatest. Since its discovery there have been a number of successes which I have referenced for interested readers. During the early years, I became acquainted with Marty Schwartz, who took a very early interest in the T concept, and applied his exceptional talents to become one of the greatest stock market traders. His exploits, philosophy and comments on my theory were presented in Market Wizards by Jack Schwager1

in 1989. To this day I still receive inquires on how to obtain the “secrets to wealth” that Marty discussed in this book. On this point I am sorry to to inform many of you that there are no easy secrets, only powerful tools with which you might learn to uncover major opportunities before the masses arrive. Marty and I have often talked over the years about the special advantages conferred on us by our US Marine Corps training. It takes a special state of mind to “sign up” for a short boat trip, in a flimsy landing craft, to a beach completely controlled by hordes who have anticipated your arrival and have set up every imaginable way to do you in. Buying into major market opportunities presents a similarly discouraging picture. You may have good reason to anticipate profits, but if a great opportunity does indeed exist, nearly everyone will be against you, including your friends, and the predominant opinion expressed by your peers, including people you respect, will be that you are embarking on a foolhardy enterprise. I believe that T Theory’s major contribution will be to show you why it will always be difficult to buy at major lows, but using its reasoning you may be able to overcome these obstacles. At each and every great buying point you must struggle at the “moment of truth” where you face seemingly overwhelming negative odds. In T Theory this moment of truth is called “The center post of the T”. It represents the point in time where all the bearish negatives of the past have been discounted by the market and is about to be transformed into an emerging, new bull market. Finding this key juncture is a potentially dangerous occupation, but as with all good Marines, one eventually remembers during the heat of battle, to keep ones head down, shoot straight when it’s your turn and always be faithful to your core principles in order to keep casualties to a minimum. In this regard it is wise to keep in mind a few basic T concepts:

https://www.ptt.cc/bbs/Option/M.1238738999.A.89A.html

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※ [本文轉錄自 Stock 看板] 作者: stasis (流雨風雪) 看板: Stock 標題: Re: [請益] 到底要工作還是玩股票 時間: Sat Mar 28 12:00:43 2009 1.除非你打算做當沖，否則全職操作基本上沒有特別意義 （做中長線的人，研究用閒暇時間就夠了 反正財報就長那樣，周線一個星期才一根） 只是讓自己少一份收入來源而已 2.再來請考量自己的原始資本和預期報酬率： 年報酬率 原始資本 年收入 原始資本 年收入 原始資本 年收入 30% 100萬 30萬 500萬 150萬 1000萬 300萬 20% 100萬 20萬 500萬 100萬 1000萬 200萬 10% 100萬 10萬 500萬 50萬 1000萬 100萬 一般新鮮人年薪+獎金算30萬，薪資會隨經驗和年資增加 由上表可知，如果初期本不夠大或績效不夠好 全職操作的收入很可能會不如一般上班族且更不穩定 如果最後發現自己不適合走這行，這段空白時光又該如何向未來的雇主交代？ 績效部份，巴神和林區的年績效也不過30%不到 一般人目標擺在10-20%會比較好，當然在勝算對自己大幅有利時 靠槓桿或者或集中下注，在短期拼高報酬也是一種作法 但個人覺得這只適合在本小時用，因為夜路走多了總會碰到鬼 在期待年年翻倍的同時，也要考慮腰斬和吃歸零糕的可能性 3.以我本身的經驗來說，研究公司很有趣，但操作其實很無聊 反正就是低檔沒量的時候買，順利的話就等到漲個50-100%再隨便賣 這段時間很可能會超過三個月甚至半年 換句話說操作絕大部分的時間都是在等待 短線操作很刺激，也有少數的人可以穩定的賺錢 把股市期市當作收銀機，每天叮咚一下就有幾十萬入袋是大家的夢想 但是大部分的人下場都是負責送錢給政府和券商而已 交易越頻繁，被抽走的部份就越多，這是不變的鐵則 再來，我不認為全職操作可以讓長期績效獲得爆發性的提昇，像從10%->50% （如果你判斷夠準，衝績效最直接的方法是槓桿，不過這是兩面刃就是） 15%->20%是比較可能的狀態，但是如果一天花8小時研究只為了多賺那5% 那跟一般上班族又有啥不同？ 結論： 一般人還是邊工作邊操作較好，同時累積資本與經驗 通過幾個多空循環，證明自己即使兼職操作也可以獲得不錯的報酬率 同時累積一定的資本，在操作的收入可以涵蓋家庭支出和基礎儲蓄後 再轉全職操作會是比較安全的選擇 我個人認為可以用閒置資金1000萬，平均績效15%做為基本門檻 當然上面的數字不是絕對，還要考慮每個人想要的生活品質就是 我心目中理想的全職操作是季報出來掃一下，月營收出來掃一下 頂多再看看週線，判斷目前的強弱勢族群 目標長期平均賺個20%-30%（這樣被極端行情毀滅的機率較低） 剩下的時間就拿來遊山玩水享受人生，自由又快樂的活著 這才是財務自由的意義所在，別只為了賺錢而賺錢，這樣是本末倒置

From: https://hackernoon.com/set-up-ssl-in-nodejs-and-express-using-openssl-f2529eab5bb

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From: https://www.freecodecamp.org/news/how-to-get-https-working-on-your-local-development-environment-in-5-minutes-7af615770eec/

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Almost any website you visit today is protected by HTTPS. If yours isn’t yet, it should be. Securing your server with HTTPS also means that you can’t send requests to this server from one that isn’t protected by HTTPS. This poses a problem for developers who use a local development environment because all of them run on http://localhost out-of-the-box.

At the startup I’m a part of, we decided to secure our AWS Elastic Load Balancer endpoints with HTTPS as part of a move to enhance security. I ran into a situation where my local development environment’s requests to the server started getting rejected.

A quick Google search later, I found several articles like this, this or this one with detailed instructions on how I could implement HTTPS on localhost. None of these instructions seemed to work even after I followed them religiously. Chrome always threw a NET::ERR_CERT_COMMON_NAME_INVALID error at me.

Refs:

- https://superuser.com/questions/117642/open-up-3-terminals-run-different-commands-from-all-for-each-of-them-to-set-up

- https://stackoverflow.com/questions/7171725/open-new-terminal-tab-from-command-line-mac-os-x

- https://stackoverflow.com/questions/48591219/open-multiple-terminal-windows-mac-using-bash-script

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From: http://marklin-blog.logdown.com/posts/2906519

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socket.io 是 node js 的一個 framework，它可以幫助我們建立聊天室這種推播功能的系統，這篇文章我們不會說明它如何使用，而是要理解 socket.io 這個套件的架構組成。

socket.io 主要由以下幾個東東構成的 :

• engine.io、engino.io-client

From: http://marklin-blog.logdown.com/posts/2906519

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投資人最常碰到的就是某人告訴你某檔個股很好，你看到之後常發現漲幅已經很大，想買買不下手，心裡常想有選股方法是剛剛轉強的股票，可以進場來買進而不用去追高嗎?

通常有兩種股票比較會漲，一種是先前寫過文章介紹強勢股來敲門，你怎能不開門迎接？找主升段的股票，就是從大盤還沒開始漲的時候就領先起漲，大盤在漲它續漲，一直漲到大盤掛掉為止，它線圖大概會漲下圖一這個樣子。

(圖一)

但這種股票不是大家都買得下手，一來已經漲高，二來乖離也大，這種股票厲害在於夠強勢，所以大盤漲，它就漲，大盤跌，它也漲，適合可以盯盤＋停損不眨眼的投機客。

現在要來介紹另一種是剛剛轉強沒多久，還在季線附近的，而且季線也已經止跌翻揚的股票，且常易有第2隻腳，剛站穩，大概會長下圖二這個樣子

From: https://stackoverflow.com/questions/8292217/why-fork-works-the-way-it-does

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This is due to historical reasons. As explained athttps://www.bell-labs.com/usr/dmr/www/hist.html, very early Unix did have neitherfork()norexec*(), and the way the shell executed commands was:

• Do the necessary initialization (openingstdin/stdout).


• Read a command line.

From:

1. https://stackoverflow.com/questions/79923/what-and-where-are-the-stack-and-heap

2. http://wp.mlab.tw/?p=312

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The stack is the memory set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is called. The stack is always reserved in a LIFO (last in first out) order; the most recently reserved block is always the next block to be freed. This makes it really simple to keep track of the stack; freeing a block from the stack is nothing more than adjusting one pointer.