| // ==UserScript== | |
| // @name Kindle Download | |
| // @namespace http://tampermonkey.net/ | |
| // @version 2025-02-20 | |
| // @description Download all your kindle books | |
| // @author You | |
| // @match https://www.amazon.com/hz/mycd/digital-console/contentlist/booksPurchases/* | |
| // @icon https://www.google.com/s2/favicons?sz=64&domain=amazon.com | |
| // @grant none | |
| // ==/UserScript== |
| // ==UserScript== | |
| // @name Amazon Kindle Auto-Downloader (Start/Stop Buttons) | |
| // @namespace http://tampermonkey.net/ | |
| // @version 1.0 | |
| // @description Adds Start/Stop buttons to automatically download Kindle books from each page | |
| // @author | |
| // @match https://www.amazon.com/hz/mycd/digital-console/contentlist/booksPurchases/dateDsc?pageNumber=* | |
| // @grant GM_setValue | |
| // @grant GM_getValue | |
| // @grant GM_addStyle |
I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.
So below I made a list of leetcode problems that are as close to grokking problems as possible.
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| { | |
| "cmd": ["g++", "-o", "${file_path}/${file_base_name}.exe", "-static-libgcc", "-static-libstdc++", "*.cpp"], | |
| "file_regex": "^(..[^:]*):([0-9]+):?([0-9]+)?:? (.*)$", | |
| "working_dir": "${file_path}", | |
| "selector": "source.c, source.cpp, source.c++", | |
| "path": "c:/Program Files/mingw-w64/mingw64/bin", | |
| "shell": true, | |
| "variants": [ | |
| { | |
| "name": "Run", |
This document is still a work in progress. It will be used as a tutorial to help explain the basics of Git and GitLab to users unfamiliar with them.
Picking the right architecture = Picking the right battles + Managing trade-offs