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๋ถ„๋ฅ˜ ์ „์ฒด๋ณด๊ธฐ49

[42 Seoul] Netwhat ํ”„๋กœ์ ํŠธ ๋ชฉํ‘œ: ๋„คํŠธ์›Œํฌ๋ฅผ ์ดํ•ดํ•˜๊ณ  ๋‚ด๋ถ€ ์ž‘๋™์— ๋Œ€ํ•ด ๋ฐฐ์šธ ์ˆ˜ ์žˆ๋‹ค. ํ”„๋กœ์ ํŠธ ์š”๊ตฌ ์‚ฌํ•ญ: ๋„คํŠธ์›Œํฌ ๊ด€๋ จ ์˜จ๋ผ์ธ ํ€ด์ฆˆ๋ฅผ ํ’€์–ด์•ผ ํ•œ๋‹ค. Netwhat ์—ฐ์Šต ๋ฌธ์ œ๋ฅผ ํ’€์–ด๋ณด๊ณ  ๊ด€๋ จ ๋‚ด์šฉ์„ ์ •๋ฆฌํ•˜๋ ค ํ•œ๋‹ค. 1. IP Address 1-1) IPv4์™€ IPv6 IP address ๋ž€? ์ง€๊ธˆ ๋‚˜๋Š” ํ™๋Œ€์˜ ํ•œ ์นดํŽ˜์—์„œ ์ด ๊ธ€์„ ์ •๋ฆฌ ์ค‘์ด๋‹ค. ์ด ์นดํŽ˜์˜ IPv4 ์ฃผ์†Œ๋Š” 172.30.1.12 ๋‹ˆ๊นŒ, ์ด IP๋Š” Bํด๋ž˜์Šค์ž„์„ ์•Œ ์ˆ˜ ์žˆ๋‹ค. ์—ฌ๊ธฐ์„œ ๋„คํŠธ์›Œํฌ ์ฃผ์†Œ๋Š” 172.30 ๊นŒ์ง€๊ณ , 1.12๋Š” ๋‚˜๋งŒ์˜ ํ˜ธ์ŠคํŠธ ์ฃผ์†Œ์ด๋‹ค. velog.io Q. What is the size of an IPv4 address? - 128 bits - 32 bits - 64 miles - 16 bits - 8 bits - 64 bytes - 128.. 2021. 6. 2.
[42 Seoul] Libft ํ”„๋กœ์ ํŠธ ๋ชฉํ‘œ: ์•ž์œผ๋กœ ์‚ฌ์šฉํ•  ์—ฌ๋Ÿฌ ์œ ์šฉํ•œ ํ•จ์ˆ˜๋“ค์„ ์ง์ ‘ ๋งŒ๋“ค๊ณ  ๊ทธ๊ฒƒ๋“ค์ด ๋“ค์–ด์žˆ๋Š” libft.a๋ผ๋Š” ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ ์ƒ์„ฑ ํ”„๋กœ์ ํŠธ ์š”๊ตฌ ์‚ฌํ•ญ: Makefile์„ ์‚ฌ์šฉํ•˜๋˜ ์ตœ์†Œํ•œ all, clean, fclean, re ๊ทœ์น™์„ ํฌํ•จํ•ด์•ผ ํ•œ๋‹ค. (bonus ๊ทœ์น™๋„ ํฌํ•จ) Part 1 - Libc Functions Libc(C ํ‘œ์ค€ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ) ํ•จ์ˆ˜๋“ค์„ ์›๋ณธ๊ณผ ๊ฐ™์€ ํ˜•์‹์˜ ํ”„๋กœํ† ํƒ€์ž…์œผ๋กœ ์„ ์–ธํ•˜์—ฌ ์žฌ๊ตฌํ˜„ํ•ด์•ผ ํ•œ๋‹ค. ์ด๋•Œ, ํ•จ์ˆ˜์˜ ์ด๋ฆ„ ์•ž์—๋Š” "ft_"๋ฅผ ๋ถ™์—ฌ์•ผ ํ•œ๋‹ค. ์žฌ๊ตฌํ˜„ํ•  Libc ํ•จ์ˆ˜ ๋ฆฌ์ŠคํŠธ ๋ฉ”๋ชจ๋ฆฌ ๊ด€๋ จ ํ•จ์ˆ˜: memset, bzero, memcpy, memccpy, memmove, memchr, memcmp, calloc ๋ฌธ์ž์—ด ๊ด€๋ จ ํ•จ์ˆ˜: strlen, strlcpy, strlcat, strchr, strr.. 2021. 5. 27.
[Django - Airbnb ํด๋ก  ์ฝ”๋”ฉ #3] USER ๋ฐ์ดํ„ฐ ๋ชจ๋ธ๋ง USER ๋ฐ์ดํ„ฐ ๋ชจ๋ธ๋งํ•˜๊ธฐ users ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜์˜ models.py์— Airbnb ์‚ฌ์šฉ์ž๋“ค์˜ ๋ฐ์ดํ„ฐ ๋ชจ๋ธ์„ ๋‹ด๋‹นํ•  User ํด๋ž˜์Šค๋ฅผ ์ƒ์„ฑํ•ด ์ค€๋‹ค. Django์—์„œ๋Š” ์ž์ฒด์ ์œผ๋กœ USER ๋ฐ์ดํ„ฐ ๋ชจ๋ธ์„ ์ œ๊ณตํ•ด ์ค€๋‹ค. ์ด ๋ฐ์ดํ„ฐ ๋ชจ๋ธ์„ ๊ทธ๋Œ€๋กœ ์‚ฌ์šฉํ•ด๋„ ๋˜์ง€๋งŒ Airbnb์˜ USER ๋ชจ๋ธ์ด ๋˜๊ธฐ์—” ๋ถ€์กฑํ•˜๊ธฐ ๋•Œ๋ฌธ์— ์ปค์Šคํ…€์„ ํ•ด์ฃผ์–ด์•ผ ํ•œ๋‹ค. USER MODEL ์ปค์Šคํ…€ํ•˜๊ธฐ 1. setttings.py์— AUTH_USER_MODEL = "myapp.MyUser" ๋“ฑ๋ก 2. models.py์—์„œ Django์—์„œ ์ œ๊ณตํ•˜๋Š” User ๋ชจ๋ธ(AbstractUser)์„ ์ƒ์† USER Model ์ปค์Šคํ…€์€ ๊ณต์‹๋ฌธ์„œ๋ฅผ ๋”ฐ๋ผ์„œ ์ง„ํ–‰ํ•˜์˜€๋‹ค. AUTH_USER_MODEL์—๋Š” ํ”„๋กœ์ ํŠธ์˜ USER ๋ฐ์ดํ„ฐ ๋ชจ๋ธ์„ ๋‹ด๋‹นํ•˜๋Š” ํด๋ž˜์Šค๋ฅผ ์ง€์ •ํ•ด์ฃผ๋ฉด .. 2021. 3. 18.
[Django - Airbnb ํด๋ก  ์ฝ”๋”ฉ #2] Django Application ์ƒ์„ฑํ•˜๊ธฐ Django Install pipenv install Django == '๋ฒ„์ „' ํ•ด๋‹น ํ”„๋กœ์ ํŠธ๋Š” Django 2.2.5 ๋ฒ„์ „์„ ์‚ฌ์šฉํ•˜์˜€๋‹ค. Django Activate 1. django-admin startproject config 2. ์ตœ์ƒ์œ„ config ๋””๋ ‰ํ„ฐ๋ฆฌ ์•ˆ์˜ ๋‚ด๋ถ€ config ๋””๋ ‰ํ„ฐ๋ฆฌ์™€ manage.py์„ ๋ฐ”๊นฅ์œผ๋กœ ๋นผ๋‚ธ๋‹ค. ๋‚ด๋ถ€ config ๋””๋ ‰ํ„ฐ๋ฆฌ๋ฅผ ์ตœ์ƒ์œ„ config ๋””๋ ‰ํ„ฐ๋ฆฌ ์™ธ๋ถ€๋กœ ๋นผ๋‚ด๋ ค๋ฉด ์ตœ์ƒ์œ„ config ๋””๋ ‰ํ† ๋ฆฌ๋ช…์„ ์ˆ˜์ •ํ•ด์•ผ ํ•œ๋‹ค. config ๋””๋ ‰ํ„ฐ๋ฆฌ์™€ manage.py๋ฅผ ๋นผ๋ƒˆ์œผ๋ฉด ์ตœ์ƒ์˜ config ๋””๋ ‰ํ„ฐ๋ฆฌ๋ฅผ ์‚ญ์ œํ•œ๋‹ค. Django Application ์ƒ์„ฑ django-admin startapp ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜๋ช… s ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜๋ช…์€ ๋ฐ˜๋“œ์‹œ ๋ณต์ˆ˜ํ˜• ์ด์–ด์•ผ ํ•œ๋‹ค!! Airbnb ํด๋ก .. 2021. 2. 17.