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- 修食åïŒã¢ã¯ã»ã¹ãå¶éããããç¹å®ã®æ¡ä»¶ã匷å¶ãããããããã«ã颿°ã«è¿œå ã§ããã³ãŒãã»ã°ã¡ã³ãã
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pragma solidity ^0.8.0;
contract Counter {
uint256 public count;
constructor() {
count = 0;
}
function increment() public {
count = count + 1;
}
function decrement() public {
count = count - 1;
}
function getCount() public view returns (uint256) {
return count;
}
}
ãã®ã³ã³ãã©ã¯ãã¯ãç¶æ
倿°count
ãšãçŸåšã®ã«ãŠã³ãã墿žããŠååŸããããã®é¢æ°ãå®çŸ©ããŸããpublic
ããŒã¯ãŒãã¯ãcount
倿°ãšé¢æ°ããããã¯ãã§ãŒã³äžã®èª°ã§ãã¢ã¯ã»ã¹ã§ããããã«ããŸããgetCount
ã®view
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1. éçºç°å¢ã®ã»ããã¢ããïŒ
次ã®ããŒã«ãå¿ èŠã§ãã
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- GanacheïŒããŒã«ã«ã€ãŒãµãªã¢ã ãããã¯ãã§ãŒã³ïŒãã¹ãçšïŒã
- Remix IDEïŒã¹ããŒãã³ã³ãã©ã¯ãã®äœæãšãããã€ã®ããã®ãªã³ã©ã€ã³IDEã
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npm install -g truffle
npm install -g ganache-cli
2. ã¹ããŒãã³ã³ãã©ã¯ãã®äœæïŒ
Solidityã䜿çšããŠãã¹ããŒãã³ã³ãã©ã¯ãã³ãŒããäœæããŸããã³ã³ãã©ã¯ãã®ç¶æ 倿°ã颿°ãããã³ã€ãã³ããå®çŸ©ããŸãã
3. ã¹ããŒãã³ã³ãã©ã¯ãã®ã³ã³ãã€ã«ïŒ
Solidityã³ãŒããSolidityã³ã³ãã€ã©ïŒsolc
ïŒã䜿çšããŠãã€ãã³ãŒãã«ã³ã³ãã€ã«ããŸããTruffleã¯ãã³ã³ãã©ã¯ããã³ã³ãã€ã«ããããã®äŸ¿å©ãªæ¹æ³ãæäŸããŸãã
truffle compile
4. ã¹ããŒãã³ã³ãã©ã¯ãã®ãã¹ãïŒ
ã¹ããŒãã³ã³ãã©ã¯ããæåŸ ã©ããã«æ©èœããããšã確èªããããã«ã培åºçã«ãã¹ãããŸããJavaScriptãŸãã¯Solidityã䜿çšããŠåäœãã¹ããäœæããŸããTruffleã¯ããã¹ããäœæããã³å®è¡ããããã®ãã¹ããã¬ãŒã ã¯ãŒã¯ãæäŸããŸãã
truffle test
5. ã¹ããŒãã³ã³ãã©ã¯ãã®ãããã€ïŒ
ã³ã³ãã€ã«ããããã€ãã³ãŒããã€ãŒãµãªã¢ã ãããã¯ãã§ãŒã³ã«ãããã€ããŸããããã«ã¯ãã¬ã¹æéãæ¯æãã®ã«ååãªEtherïŒETHïŒãæã€ã€ãŒãµãªã¢ã ã¢ã«ãŠã³ããå¿ èŠã§ãããã¹ãç®çã§ãã¹ããããã¯ãŒã¯ïŒRopstenãRinkebyãªã©ïŒãŸãã¯å®éã®çšéã§ã¡ã€ã³ãããã«ãããã€ã§ããŸããTruffleã¯ããããã€ã¡ã³ãã管çããããã®ãããã€ã¡ã³ããã¬ãŒã ã¯ãŒã¯ãæäŸããŸãã
truffle migrate
6. ã¹ããŒãã³ã³ãã©ã¯ããšã®å¯Ÿè©±ïŒ
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