programming math

ํ”„๋กœ๊ทธ๋ž˜๋จธ ๊ธฐ์ดˆ ์ˆ˜ํ•™ 2-1 - ์ •์ˆ˜

```toc from-heading: 2 to-heading: 3 ``` ## ๊ฐœ๋… - ์ •์ˆ˜: 1, 2, 3๊ณผ ๊ฐ™์€ ์ž์—ฐ์ˆ˜, ์—†์Œ์„ ๋‚˜ํƒ€๋‚ด๋Š” 0, ๊ทธ๋ฆฌ๊ณ  ์ž์—ฐ์ˆ˜์™€ ๋ฐ˜๋Œ€ ๋ถ€ํ˜ธ์ธ ์ˆ˜ (-1, -2, -3...) - ๋ฐฐ์ˆ˜: ์–ด๋–ค ์ •์ˆ˜์— ๋‹ค๋ฅธ ์ •์ˆ˜๋ฅผ ๊ณฑํ•˜์—ฌ ๋งŒ๋“ค์–ด์ง„ ์ •์ˆ˜ (15๋Š” 3๊ณผ 5์˜ ๋ฐฐ์ˆ˜) - ์•ฝ์ˆ˜: ์–ด๋–ค ์ •์ˆ˜๋ฅผ ๋‚˜๋จธ์ง€ ์—†์ด ๋‚˜๋ˆŒ ์ˆ˜ ์žˆ๋Š” ์ˆ˜ - ์†Œ์ˆ˜:...

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Webpack์„ ํ™œ์šฉํ•œ ์„ฑ๋Šฅํ–ฅ์ƒ - ์บ์‹ฑ ํ™œ์šฉํ•˜๊ธฐ

[Make use of long-term caching](https://developers.google.com/web/fundamentals/performance/webpack/use-long-term-caching)์„ ๋ฒˆ์—ญํ•œ ๊ธ€์ž…๋‹ˆ๋‹ค. ```toc from-heading: 2 to-heading: 3 ``` ์•ฑ ๋กœ๋”ฉ ์†๋„๋ฅผ ํ–ฅ์ƒ์‹œํ‚ฌ ์ˆ˜ ์žˆ๋Š” ๋ฐฉ๋ฒ• ์ค‘ ...

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programming math

ํ”„๋กœ๊ทธ๋ž˜๋จธ ๊ธฐ์ดˆ ์ˆ˜ํ•™ 1-2 - ์ง‘ํ•ฉ

```toc from-heading: 2 to-heading: 3 ``` ## ์ง‘ํ•ฉ ๊ฐœ๋ณ„์ ์ธ ๊ฐœ์ฒด๋“ค์˜ ๋ชจ์ž„์„ ์ง‘ํ•ฉ์ด๋ผ๊ณ  ํ•˜๋ฉฐ, ์ง‘ํ•ฉ์„ ์ด๋ฃจ๋Š” ๊ฐœ์ฒด๋ฅผ ์›์†Œ๋ผ๊ณ  ํ•œ๋‹ค. ์ง‘ํ•ฉ์„ ์ด๋ฃจ๋Š” ์›์†Œ๋Š” `{ }` ์ค‘๊ด„ํ˜ธ ๋กœ ๋‚˜ํƒ€๋‚ด๋ฉฐ, ์›์†Œ๋‚˜์—ด๋ฒ•๊ณผ ์กฐ๊ฑด ์ œ์‹œ๋ฒ•์œผ๋กœ ํ‘œ์‹œํ•œ๋‹ค. ์ˆœ์„œ๋Š” ์ƒ๊ด€์—†์ง€๋งŒ, ์ค‘๋ณต์€ ํ•˜์ง€ ์•Š๋Š”๋‹ค. $$ A = \{ 1, 5, 7, 3, 9 \} $$ ...

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javascript nodejs

๋” ๋น ๋ฅธ async function ๊ณผ promises

[Faster async functions and promises](https://v8.dev/blog/fast-async)์„ ๋ฒˆ์—ญ ์š”์•ฝํ•œ ๊ธ€์ž…๋‹ˆ๋‹ค. ```toc from-heading: 2 to-heading: 3 ``` ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์˜ ๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ๋Š” ์˜ˆ์ „๋ถ€ํ„ฐ ํŠน๋ณ„ํžˆ ๋น ๋ฅด์ง€ ์•Š๋‹ค๋Š” ๋น„ํŒ์„ ๋งŽ์ด ๋ฐ›์•„ ์™”๋‹ค. ์„ค์ƒ๊ฐ€์ƒ์œผ๋กœ, ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ (ํŠนํžˆ ...

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programming math

ํ”„๋กœ๊ทธ๋ž˜๋จธ ๊ธฐ์ดˆ ์ˆ˜ํ•™ 1-1 - ๋ช…์ œ์™€ ๋…ผ๋ฆฌ์—ฐ์‚ฐ

```toc from-heading: 2 to-heading: 3 ``` ## ๋ช…์ œ ๋ช…์ œ๋ž€ ์ฐธ์ธ์ง€ ๊ฑฐ์ง“์ธ์ง€ ํŒ๋ณ„ํ•  ์ˆ˜ ์žˆ๋Š” ๋ฌธ์žฅ์ด๋‚˜ ์ˆ˜์‹์„ ๋งํ•œ๋‹ค. - ๋‹ฌ์€ ์ง€๊ตฌ์˜ ์œ„์„ฑ์ด๋‹ค (์ฐธ) - ๊ณ ๋ž˜๋Š” ์–ด๋ฅ˜๋‹ค (๊ฑฐ์ง“) - $7 \times 8 = 56$ (์ฐธ) - $x^2 - 2x - 1 = 0$ ($x$ ๊ฐ’์ด ์ •ํ•ด์ง€์ง€ ์•Š์•„ ์•Œ์ˆ˜ ์—†๋‹ค. ์ด๋Š” ๋ช…์ œ๋‹ค ๊ฐ€์ด๋‹ค.)...

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