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Merge pull request #21 from cheezapize/patch-1
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dongsam committed Jun 22, 2018
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.. _voting:

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νˆ¬ν‘œ 슀마트 μ»¨νŠΈλž™νŠΈ
νˆ¬ν‘œ
******

λ‹€μŒ μ»¨νŠΈλž™νŠΈλŠ” ν™•μ‹€νžˆ λ³΅μž‘ν•©λ‹ˆλ‹€. κ·ΈλŸ¬λ‚˜ λ‹€μŒ μ˜ˆμ‹œλ“€μ€ μ†”λ¦¬λ””ν‹°μ˜
λ‹€μ–‘ν•œ νŠΉμ§•μ„ ν¬ν•¨ν•©λ‹ˆλ‹€. 이 μ˜ˆμ‹œλŠ” νˆ¬ν‘œμ»¨νŠΈλž™νŠΈλ₯Ό κ΅¬ν˜„ν•©λ‹ˆλ‹€.
λ¬Όλ‘ , μ „μž νˆ¬ν‘œκ°€ λ‹Ήλ©΄ν•œ 핡심 λ¬Έμ œλŠ” μ˜¬λ°”λ₯Έ μ‚¬λžŒμ—κ²Œ νˆ¬ν‘œκΆŒμ„
λΆ€μ—¬ν•˜λŠ” 방법과 μ‘°μž‘μ„ λ°©μ§€ν•˜λŠ” λ°©λ²•μž…λ‹ˆλ‹€. μš°λ¦¬λŠ” 이 μ˜ˆμ‹œμ—μ„œ
λͺ¨λ“  문제λ₯Ό ν•΄κ²°ν•˜μ§€λŠ” μ•Šμ§€λ§Œ, μ΅œμ†Œν•œ μœ„μž„νˆ¬ν‘œκ°€ μ–΄λ–»κ²Œ
λ™μ‹œμ— **μžλ™μ μ΄λ©° μ™„μ „ 투λͺ…ν•˜κ²Œ** μ΄λ£¨μ–΄μ§€λŠ”μ§€ 보여쀄 κ²ƒμž…λ‹ˆλ‹€.
λ‹€μŒμ˜ μ½˜νŠΈλ ‰νŠΈλŠ” μƒλ‹Ήνžˆ λ³΅μž‘ν•˜μ§€λ§Œ solidity의 λ§Žμ€ νŠΉμ§•λ“€μ„ λ³΄μ—¬μ€λ‹ˆλ‹€.
μ΄λŠ” νˆ¬ν‘œμ— κ΄€ν•œ μ½˜νŠΈλ ‰νŠΈλ₯Ό κ΅¬ν˜„ν•œ κ²ƒμž…λ‹ˆλ‹€.
λ¬Όλ‘  μ „μž νˆ¬ν‘œμ˜ 핡심 λ¬Έμ œλŠ”
μ–΄λ–»κ²Œ νˆ¬ν‘œκΆŒμ„ μ˜¬λ°”λ₯΄κ²Œ 할당할것이며
이에 λŒ€ν•œ μ‘°μž‘μ„ μ–΄λ–»κ²Œ μ˜ˆλ°©ν•˜λŠλƒμ— λŒ€ν•œ κ²ƒμž…λ‹ˆλ‹€.
μ—¬κΈ°μ„œ λͺ¨λ“  문제λ₯Ό ν•΄κ²°ν•  수 μ—†κ² μ§€λ§Œ 적어도 μš°λ¦¬λŠ”
이 예제λ₯Ό ν†΅ν•΄μ„œ κ°œν‘œκ°€ "μžλ™μ μ΄κ³  λ™μ‹œμ— μ™„λ²½νžˆ 투λͺ…ν•œμ§€"
μœ„μž„νˆ¬ν‘œκ°€ μ–΄λ–»κ²Œ μ΄λ£¨μ–΄μ§€λŠ”μ§€ 보여쀄 κ²ƒμž…λ‹ˆλ‹€.


이 μ•„μ΄λ””μ–΄λŠ” λ°œμ˜μ•ˆ λ‹Ή ν•˜λ‚˜μ˜ μ»¨νŠΈλž™νŠΈλ₯Ό μž‘μ„±ν•˜μ—¬ 각 μ˜΅μ…˜λ§ˆλ‹€
짧은 이름을 λΆ™μž…λ‹ˆλ‹€. 슀마트 μ»¨νŠΈλž™νŠΈμ—μ„œ 의μž₯ 역할을 μˆ˜ν–‰ν•˜λŠ” μ»¨νŠΈλž™νŠΈ μž‘μ„±μžλŠ” 각 μ£Όμ†Œμ— κ°œλ³„μ μΈ νˆ¬ν‘œκΆŒν•œμ„ λΆ€μ—¬ν•  κ²ƒμž…λ‹ˆλ‹€.
그러면 의μž₯으둜 λ΄‰μ‚¬ν•˜λŠ” μ»¨νŠΈλž™νŠΈ μž‘μ„±μžλŠ” 각 μ£Όμ†Œμ— κ°œλ³„μ μœΌλ‘œ νˆ¬ν‘œκΆŒμ„ λΆ€μ—¬ν•©λ‹ˆλ‹€.
이 μ•„μ΄λ””μ–΄λŠ” ν•œκ°œμ˜ νˆ¬ν‘œ λ‹Ή ν•˜λ‚˜μ˜ μ»¨νŠΈλž™νŠΈλ₯Ό μž‘μ„±ν•˜μ—¬ 각각의 μ„ νƒλ§ˆλ‹€
짧은 이름을 μ œκ³΅ν•©λ‹ˆλ‹€.
그리고 의μž₯ 역할을 μˆ˜ν–‰ν•˜λŠ” μ»¨νŠΈλ ‰νŠΈ μž‘μ„±μžλŠ”
각 μ£Όμ†Œμ— κ°œλ³„μ μΈ νˆ¬ν‘œκΆŒμ„ λΆ€μ—¬ν•  κ²ƒμž…λ‹ˆλ‹€.

μ£Όμ†Œκ°€ μžˆλŠ” μ‚¬λžŒλ“€μ€ μžμ‹ μ„ νˆ¬ν‘œν•˜κ±°λ‚˜ κΈ΄λ’°ν•  수 μžˆλŠ” μ‚¬λžŒμ—κ²Œ νˆ¬ν‘œλ₯Ό μœ„μž„ν•  수 μžˆμŠ΅λ‹ˆλ‹€.
νˆ¬ν‘œκΆŒμ„ 받은 μ£Όμ†Œμ˜ μ‚¬λžŒλ“€μ€
μžμ‹ μ΄ 직접 νˆ¬ν‘œν•˜κ±°λ‚˜ μžμ‹ μ˜ νˆ¬ν‘œκΆŒμ„ μ‹ λ’°ν•  수 μžˆλŠ” λ‹€λ₯Έ μ‚¬λžŒμ—κ²Œ μœ„μž„ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

νˆ¬ν‘œμ‹œκ°„μ΄ λλ‚˜λ©΄, ``winningProposal()`` 이 κ°€μž₯ 큰 숫자의 κ²°κ³Όλ₯Ό λ°˜ν™˜ν•©λ‹ˆλ‹€.
νˆ¬ν‘œ μ‹œκ°„μ΄ λλ‚˜λ©΄, ``winningProposal()``ν•¨μˆ˜λŠ”
κ°€μž₯ λ§Žμ€ λ“ν‘œλ₯Ό ν•œ μ•ˆκ±΄μ„ λ°˜ν™˜ν•  κ²ƒμž…λ‹ˆλ‹€.
::
pragma solidity ^0.4.16;
/// @title λŒ€ν‘œλ‹¨κ³Ό νˆ¬ν‘œ.
/// @title μœ„μž„ νˆ¬ν‘œ.
contract Ballot {
// 이것은 λ‚˜μ€‘μ— λ³€μˆ˜μ— μ‚¬μš©λ  μƒˆλ‘œμš΄
// 볡합 μœ ν˜•μ„ μ„ μ–Έν•©λ‹ˆλ‹€.
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