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Merge pull request #41 from InSeong-So/main
โœ๏ธ 3ํšŒ์ฐจ ๋ฌธ์„œ ์ˆ˜์ • : apply/call ๋งํฌ ์—ฐ๊ฒฐ
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โ€ŽJavascript/function.mdโ€Ž

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ํ•จ์ˆ˜๋„ ์ผ๋ฐ˜ ๊ฐ์ฒด์ฒ˜๋Ÿผ ํ”„๋กœํผํ‹ฐ๋ฅผ ์†Œ์œ ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ฆ‰, Object.getOwnPropertyDescriptors๋ฅผ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์ฃ . ํ•จ์ˆ˜ ๊ฐ์ฒด๊ฐ€ ์†Œ์œ ํ•œ ํ”„๋กœํผํ‹ฐ๋ฅผ ์‚ดํŽด๋ณผ๊นŒ์š”?
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> TODO : callee ํ”„๋กœํผํ‹ฐ ๋ˆ„๋ฝ๋˜์—ˆ์Œ 2021-10-01
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- **arguments** ํ”„๋กœํผํ‹ฐ
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- arguments ๊ฐ์ฒด๋Š” ํ•จ์ˆ˜ ํ˜ธ์ถœ ์‹œ ์ „๋‹ฌ๋œ ์ธ์ˆ˜(argument)๋“ค์˜ ์ •๋ณด๋ฅผ ๋‹ด๊ณ  ์žˆ๋Š” ์ˆœํšŒ ๊ฐ€๋Šฅ(Iterable)ํ•œ ์œ ์‚ฌ ๋ฐฐ์—ด ๊ฐ์ฒด์ž…๋‹ˆ๋‹ค.
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- ํ•จ์ˆ˜ ๋‚ด๋ถ€์—์„œ ์ง€์—ญ ๋ณ€์ˆ˜์ฒ˜๋Ÿผ ์‚ฌ์šฉ๋˜๋ฉฐ ์™ธ๋ถ€์—์„œ๋Š” ์ฐธ์กฐํ•  ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค.
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- ์ง€์ •๋œ ๊ฐœ์ˆ˜๋ณด๋‹ค ๋งŽ์€ ๊ฒฝ์šฐ : ์•”๋ฌต์ ์œผ๋กœ arguments ๊ฐ์ฒด์— ์ˆœ์„œ๋Œ€๋กœ ์ €์žฅ(์ˆœํšŒ ๊ฐ€๋Šฅํ•œ ์œ ์‚ฌ ๋ฐฐ์—ด ๊ฐ์ฒด์ด๋ฏ€๋กœ)๋ฉ๋‹ˆ๋‹ค.
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- ์ด๋Ÿฌํ•œ ์ด์œ ๋กœ `๊ฐ€๋ณ€ ์ธ์ž ํ•จ์ˆ˜`๋ฅผ ๊ตฌํ˜„ํ•  ๋•Œ ์œ ์šฉํ•ฉ๋‹ˆ๋‹ค.
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- ๋‹จ, ์œ ์‚ฌ ๋ฐฐ์—ด ๊ฐ์ฒด๋Š” ๋ฐฐ์—ด์ด ์•„๋‹ˆ๋ฏ€๋กœ ๋ฐฐ์—ด ๋ฉ”์„œ๋“œ๋ฅผ ์‚ฌ์šฉํ•  ์ˆ˜ ์—†์œผ๋‚˜ ์•„๋ž˜์˜ ๋ฐฉ๋ฒ•์œผ๋กœ ๊ฐ„์ ‘ ํ˜ธ์ถœํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
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1. `Function.prototype.call, Function.prototype.apply` ์‚ฌ์šฉํ•˜๊ธฐ
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1. `Function.prototype.call, Function.prototype.apply` ์‚ฌ์šฉํ•˜๊ธฐ. [์ฐธ์กฐ1](https://github.com/FECrash/JavascriptCrash/blob/main/Javascript/this.md#functionprototypeapplycallbind-%EB%A9%94%EC%84%9C%EB%93%9C%EC%97%90-%EC%9D%98%ED%95%9C-%EA%B0%84%EC%A0%91-%ED%98%B8%EC%B6%9C)
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```js
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function sum(){
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// const array = Array.prototype.slice.apply(arguments);

โ€Žassignments/README.mdโ€Ž

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- [๋ชจ๋˜ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๋”ฅ ๋‹ค์ด๋ธŒ - 1ํšŒ์ฐจ ์ชฝ์ง€์‹œํ—˜ ์น˜๊ธฐ](https://docs.google.com/forms/d/e/1FAIpQLSejv3Q8BstGkDJm-yf6Eivc7TYlbknKTNK1NbkiMC99ALAJKg/viewform)
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- [๋ชจ๋˜ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๋”ฅ ๋‹ค์ด๋ธŒ - 2, 3ํšŒ์ฐจ ์ชฝ์ง€์‹œํ—˜ ์น˜๊ธฐ](https://docs.google.com/forms/d/e/1FAIpQLSdx2hjQxBAJYoDTfKzwDTnlfDosy88jhZ0wBKPbv8Eb20Hl_w/viewform)
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- [๋ชจ๋˜ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๋”ฅ ๋‹ค์ด๋ธŒ - 4ํšŒ์ฐจ ์ชฝ์ง€์‹œํ—˜ ์น˜๊ธฐ](https://docs.google.com/forms/d/e/1FAIpQLSfViuVWGHsSMS24Uj3pu4PXxxem-Dh9WGAg-cGPV1IzKqzx7A/viewform)
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- [๋ชจ๋˜ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๋”ฅ ๋‹ค์ด๋ธŒ - 5ํšŒ์ฐจ ์ชฝ์ง€์‹œํ—˜ ์น˜๊ธฐ](https://docs.google.com/forms/d/e/1FAIpQLSfAQ-vMwqN_Cyi3oZkKSdA4wpAWIhjG1cnfNCDpvFO_CM_W8A/viewform)
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