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@vasanthk
vasanthk / System Design.md
Last active July 14, 2025 03:42
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
@macournoyer
macournoyer / Output
Last active January 9, 2023 15:12
A Neural Network framework in 25 LOC
$ python xor.py
Training:
Epoch 0 MSE: 1.765
Epoch 100 MSE: 0.015
Epoch 200 MSE: 0.005
* Target MSE reached *
Evaluating:
1 XOR 0 = 1 ( 0.904) Error: 0.096
0 XOR 1 = 1 ( 0.908) Error: 0.092
1 XOR 1 = 0 (-0.008) Error: 0.008
@alanhamlett
alanhamlett / requirements.txt
Last active March 21, 2019 00:02
WakaTime's requirements.txt Python dependencies
-e git://github.com/kennethreitz/inbox.py.git@551b4f44b144564504c687cebdb4c543cb8e9adf#egg=inbox
alembic==0.8.3
amqp==1.4.9
anyjson==0.3.3
boto==2.39.0
braintree==3.20.0
cairosvg==1.0.19
celery==3.1.20
@gtallen1187
gtallen1187 / slope_vs_starting.md
Created November 2, 2015 00:02
A little bit of slope makes up for a lot of y-intercept

"A little bit of slope makes up for a lot of y-intercept"

01/13/2012. From a lecture by Professor John Ousterhout at Stanford, class CS140

Here's today's thought for the weekend. A little bit of slope makes up for a lot of Y-intercept.

[Laughter]

@ygotthilf
ygotthilf / jwtRS256.sh
Last active June 2, 2025 06:57
How to generate JWT RS256 key
ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub
@kristopolous
kristopolous / hn_seach.js
Last active July 24, 2023 04:12
hn job query search
// Usage:
// Copy and paste all of this into a debug console window of the "Who is Hiring?" comment thread
// then use as follows:
//
// query(term | [term, term, ...], term | [term, term, ...], ...)
//
// When arguments are in an array then that means an "or" and when they are seperate that means "and"
//
// Term is of the format:
// ((-)text/RegExp) ( '-' means negation )
@chantastic
chantastic / on-jsx.markdown
Last active May 13, 2025 12:04
JSX, a year in

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

@prakhar1989
prakhar1989 / richhickey.md
Last active January 30, 2025 06:39 — forked from stijlist/gist:bb932fb93e22fe6260b2
richhickey.md

Rich Hickey on becoming a better developer

Rich Hickey • 3 years ago

Sorry, I have to disagree with the entire premise here.

A wide variety of experiences might lead to well-roundedness, but not to greatness, nor even goodness. By constantly switching from one thing to another you are always reaching above your comfort zone, yes, but doing so by resetting your skill and knowledge level to zero.

Mastery comes from a combination of at least several of the following:

@CamDavidsonPilon
CamDavidsonPilon / 538.json
Last active November 28, 2021 07:37
Use the two files below to mimic graphs on 538. www.dataorigami.net/blogs/fivethirtyeight-mpl
{
"lines.linewidth": 2.0,
"examples.download": true,
"patch.linewidth": 0.5,
"legend.fancybox": true,
"axes.color_cycle": [
"#30a2da",
"#fc4f30",
"#e5ae38",
"#6d904f",
@staltz
staltz / introrx.md
Last active July 13, 2025 10:33
The introduction to Reactive Programming you've been missing