Skip to content

Instantly share code, notes, and snippets.

View Juha3141's full-sized avatar
๐Ÿ’ญ
Trying to think something

Ian Juha Cho Juha3141

๐Ÿ’ญ
Trying to think something
  • University of Illinois Urbana-Champaign Computer Science
  • Arbitrary location in South Korea
  • 10:59 (UTC +09:00)
View GitHub Profile
@jboner
jboner / latency.txt
Last active July 20, 2026 13:24
Latency Numbers Every Programmer Should Know
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
@xnuk
xnuk / hyeong.md
Last active July 10, 2026 10:47
๋‚œํ•ดํ•œ ํ˜€์—‰.... ์–ธ์–ด

๋‚œํ•ดํ•œ ํ˜€์—‰... ์–ธ์–ด v0.4.5

  • โ€ฆ(U+2026), โ‹ฏ(U+22EF), โ‹ฎ(U+22EE)๋Š” ๋ชจ๋‘ .(U+002E)๊ฐ€ 3๋ฒˆ ์—ฐ์†์œผ๋กœ ๋‚˜์—ด๋œ ๊ฒƒ๊ณผ ๊ฐ™์€ ๊ฒƒ์œผ๋กœ ๋ด…๋‹ˆ๋‹ค.
  • "ํ•œ๊ธ€ ์Œ์ ˆ ๋ฌธ์ž"๋Š” ๊ฐ€(U+AC00) ์ด์ƒ ํžฃ(U+D7A3) ์ดํ•˜์˜ ์œ ๋‹ˆ์ฝ”๋“œ ๋ฌธ์ž๋“ค์„ ์˜๋ฏธํ•ฉ๋‹ˆ๋‹ค.

์Šคํƒ

  • ์Šคํƒ์˜ ๋ชจ๋“  ์›์†Œ๋Š” ์œ ๋ฆฌ์ˆ˜ ๋˜๋Š” NaN์œผ๋กœ ์ด๋ฃจ์–ด์ ธ ์žˆ์Šต๋‹ˆ๋‹ค. ๋ถ„๋ชจ๊ฐ€ 1์ธ ์œ ๋ฆฌ์ˆ˜๋ฅผ ํŽธ์˜์ƒ ์ •์ˆ˜๋ผ๊ณ  ์นญํ•ฉ๋‹ˆ๋‹ค.
  • NaN์€ ํŠน์ˆ˜ํ•œ ์ˆซ์ž์ฒ˜๋Ÿผ ์ทจ๊ธ‰๋ฉ๋‹ˆ๋‹ค. ์–ด๋– ํ•œ ์—ฐ์‚ฐ์„ ํ•˜๋”๋ผ๋„ ๊ทธ ์—ฐ์‚ฐ์— NaN์ด ์žˆ์„ ๊ฒฝ์šฐ ๊ทธ ์—ฐ์‚ฐ์˜ ๊ฐ’์€ NaN์ด ๋ฉ๋‹ˆ๋‹ค.
@dinhchi27
dinhchi27 / Key Sublime Text 3.2.1 Build 3207 - Sublime Text 3 License Key
Last active June 12, 2026 05:57
Key Sublime Text 3.2.1 Build 3207 - Sublime Text 3 License Key
Key Sublime Text 3.2.1 Build 3207
----- BEGIN LICENSE -----
Member J2TeaM
Single User License
EA7E-1011316
D7DA350E 1B8B0760 972F8B60 F3E64036
B9B4E234 F356F38F 0AD1E3B7 0E9C5FAD
FA0A2ABE 25F65BD8 D51458E5 3923CE80
87428428 79079A01 AA69F319 A1AF29A4
A684C2DC 0B1583D4 19CBD290 217618CD
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
options = webdriver.ChromeOptions()
driver = webdriver.Chrome(options=options)
student_id = "REPLACE_WITH_STUDENT_ID"
name = "REPLACE_WITH_NAME"
window_count = 1
@snowyegret23
snowyegret23 / parse_bmfont_fnt.py
Last active February 17, 2024 13:27
bmfont์˜ fntํŒŒ์ผ์„ ์ฝ์–ด์„œ ํฐํŠธ ์ •๋ณด/๊ธ€๋ฆฌํ”„ ์ •๋ณด๋ฅผ dict๋กœ ๋ฆฌํ„ด (txt๋กœ exportํ–ˆ์„๋•Œ ์‚ฌ์šฉ)
import json
# ์ •์ˆ˜์ธ์ง€ ํŒ๋ณ„
def isint(number):
try:
ret = int(number)
return True
except ValueError:
return False
@chaeya
chaeya / gist:bafc4e3c260ee6d8e2b8fb2f452e71a2
Created June 17, 2024 07:00
๋ฆฌ๋ˆ…์Šค์šฉ ํ•œ์ปด ์˜คํ”ผ์Šค
Ubuntu (>=20.04)
# hoffice_11.20.0.1520_amd64.deb
https://mega.nz/file/71UFmBCI#-aVOcQcZOCp4GIxp6kL7HGjA7NdpDW8PFWkjT5ax3aY
@nemorize
nemorize / korean-subway-station-list.json5
Last active August 12, 2025 07:23
๋Œ€ํ•œ๋ฏผ๊ตญ ๊ตญ๋‚ด์— ์กด์žฌํ•˜๋Š” ์ง€ํ•˜์ฒ ์—ญ ์ •๋ณด(์—ญ๋ช…, ์ง€์—ญ๊ตฌ, ๋…ธ์„ , ์œ„/๊ฒฝ๋„) ๋ชฉ๋ก
[
// =======================================================
// ๋ณธ ์ž๋ฃŒ๋Š” CC0-1.0 ๋ผ์ด์„ ์Šค๋ฅผ ๋”ฐ๋ฆ…๋‹ˆ๋‹ค.
// https://creativecommons.org/publicdomain/zero/1.0/deed
// ์ €์ž‘๊ถŒ์ž์˜ ํ—ˆ๋ฝ์„ ๊ตฌํ•˜์ง€ ์•Š์•„๋„ ์ƒ์—…์ ์ธ ๋ชฉ์ ์„ ํฌํ•จํ•œ ์–ด๋– ํ•œ ๋ชฉ์ ์œผ๋กœ๋“ 
// ์ž์œ ๋กญ๊ฒŒ ๋ณต์‚ฌ, ์ˆ˜์ •, ๋ฐฐํฌ, ์‹ค์—ฐํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
// =======================================================
// ๋ชจ๋“  ์ •๋ณด๋Š” ์ง์ ‘ ์ˆ˜์ง‘ํ•˜์—ฌ ์ •๋ฆฌํ•œ ์ •๋ณด์ž…๋‹ˆ๋‹ค.
// ์ผ๋ถ€ ์ •๋ณด๊ฐ€ ์˜ค๊ธฐ๋˜์—ˆ๊ฑฐ๋‚˜, ์œ„/๊ฒฝ๋„ ์ขŒํ‘œ๊ฐ€ ๋ถ€์ •ํ™•ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
// Gist ๋Œ“๊ธ€์„ ํ†ตํ•ด ์˜ค๋ฅ˜๋ฅผ ์ œ๋ณดํ•ด์ฃผ์„ธ์š”.

๋ฐ”๋ผ๋ณด๋Š” ๊ด€์ ์— ๋”ฐ๋ผ x86-64์˜ ๋ ˆ์ง€์Šคํ„ฐ ๊ฐœ์ˆ˜์— ๋Œ€ํ•ด ๋งํ•˜๋Š” ๋ฐ”๊ฐ€ ๋งค๋ฒˆ ๋‹ฌ๋ผ์ ธ, Intel์˜ ๊ณต์‹ ๋ฌธ์„œ์ธ Intelยฎ 64 and IA-32 Architectures Software Developerโ€™s Manual Combined Volumes: 1, 2A, 2B, 2C, 2D, 3A, 3B, 3C, 3D, and 4์— ์„ค๋ช…๋˜์–ด ์žˆ๋Š” 64๋น„ํŠธ ๋ชจ๋“œ(64-bit mode)์—์„œ ๋ณผ ์ˆ˜ ์žˆ๋Š” ๋ ˆ์ง€์Šคํ„ฐ๋ฅผ ๋ฒˆ์—ญํ•˜์—ฌ ์ •๋ฆฌํ•˜์—ฌ ๋ด„. 5329p์˜ ์ „์ฒด ๋ฌธ์„œ์—์„œ "register" ๊ฒ€์ƒ‰ ๊ฒฐ๊ณผ๋กœ ๋œจ๋Š” ๋Œ€๋ถ€๋ถ„์˜ ๋ ˆ์ง€์Šคํ„ฐ์— ๊ด€ํ•ด ์ •๋ฆฌํ•˜์˜€์Œ.

๋ฒ”์šฉ ๋ ˆ์ง€์Šคํ„ฐ General Purpose Registers (Vol.1 p.3-13)

์ด๋ฆ„ ์šฉ๋„
RAX ์‚ฐ์ˆ  ์—ฐ์‚ฐ ์‹œ, ํ”ผ์—ฐ์‚ฐ์ž์™€ ๊ฒฐ๊ณผ์˜ ๋ˆ„์‚ฐ๊ธฐ๋กœ ์‚ฌ์šฉ
RBX ์ ‘๊ทผํ•  ๋ฐ์ดํ„ฐ๊ฐ€ ์œ„์น˜ํ•œ ์„ธ๊ทธ๋จผํŠธ ์ƒ์˜ ์ฃผ์†Œ๋ฅผ ๊ฐ€๋ฅดํ‚ด (Offset; 8086 Real Mode์—์„œ์˜ ๋ฉ”๋ชจ๋ฆฌ ๊ด€๋ฆฌ ๋ฐฉ์‹๊ณผ ์—ฐ๊ด€ Segment(๊ธฐ๋ณธ์ ์œผ๋กœ DS, Override ๊ฐ€๋Šฅ) + Offset(BX))
RCX ๋ฐ˜๋ณต ํšŸ์ˆ˜๋ฅผ ์ €์žฅํ•จ (REP ๋ช…๋ น ์‹œ CX๊ฐ€ 0์ด ๋  ๋–„ ๊นŒ์ง€ ๋ฐ˜๋ณต)
RDX I/O ํฌํŠธ ๋ฒˆํ˜ธ๋ฅผ ์ €์žฅํ•จ
RDI ์„ธ๊ทธ๋จผํŠธ ์ƒ์˜ ๋ฐ์ดํ„ฐ ์ฃผ์†Œ๋ฅผ ๊ฐ€๋ฅดํ‚ค๋ฉฐ ํŠนํžˆ String ๋ช…๋ น์—์„œ์˜ ๋ชฉ์ ์ง€ ์ฃผ์†Œ์™€ ๊ด€๊ณ„๋จ (Offset; 8086 Real Mode์—์„œ์˜ ๋ฉ”๋ชจ๋ฆฌ ๊ด€๋ฆฌ ๋ฐฉ์‹๊ณผ ์—ฐ๊ด€ Segment(ES, Override ๋ถˆ๊ฐ€๋Šฅ) + Offset(DI)))