/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
![macOS の zsh ではこれだけはやっておこう](https://cdn-ak-scissors.b.st-hatena.com/image/square/9347abc9570dd86e92bc1614712ae0fc88b6174b/height=288;version=1;width=512/https%3A%2F%2Fres.cloudinary.com%2Fzenn%2Fimage%2Fupload%2Fs--dqVD1J4a--%2Fc_fit%252Cg_north_west%252Cl_text%3Anotosansjp-medium.otf_55%3AmacOS%252520%2525E3%252581%2525AE%252520zsh%252520%2525E3%252581%2525A7%2525E3%252581%2525AF%2525E3%252581%252593%2525E3%252582%25258C%2525E3%252581%2525A0%2525E3%252581%252591%2525E3%252581%2525AF%2525E3%252582%252584%2525E3%252581%2525A3%2525E3%252581%2525A6%2525E3%252581%25258A%2525E3%252581%252593%2525E3%252581%252586%252Cw_1010%252Cx_90%252Cy_100%2Fg_south_west%252Cl_text%3Anotosansjp-medium.otf_37%3Asprout2000%252Cx_203%252Cy_121%2Fg_south_west%252Ch_90%252Cl_fetch%3AaHR0cHM6Ly9zdG9yYWdlLmdvb2dsZWFwaXMuY29tL3plbm4tdXNlci11cGxvYWQvYXZhdGFyLzY0NGZiNzgzNzguanBlZw%3D%3D%252Cr_max%252Cw_90%252Cx_87%252Cy_95%2Fv1627283836%2Fdefault%2Fog-base-w1200-v2.png)
import { useState } from 'react'; function Square({ value, onSquareClick }) { return ( <button className="square" onClick={onSquareClick}> {value} </button> ); } function Board({ xIsNext, squares, onPlay }) { function handleClick(i) { if (calculateWinner(squares) || squares[i]) { return; } const nextSquares = squares.slice(); if (xIsNext) { nextSquares[i] = 'X'; } else { nextSquares[i] = 'O'; } on
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