小编Sun*_*the的帖子

bool hasWord(int y, int x, string &word) {
    if(!inRange(y, x)) return false; 
    if(board[y][x] != word[0])  return false; 
    if(word.size() == 1) return true; 
    for(int direction = 0; direction < 8; direction++) {
        int nextX = x + dx[direction];
        int nextY = y + dy[direction];
        if(hasWord(nextY, nextX, word.substr(1)))  // <--- This
            return true;
    }
return false; }

错误：从类型为 'std::basic_string' 的右值对类型为 'std::string& {aka std::basic_string&}' 的非常量引用进行无效初始化 if(hasWord(nextY, nextX, word.substr(1)) )

为什么我错了？

function openFileDialog() {
  dialog.showOpenDialog(win, {
    properties: ['openFile']
  } , filepath  => {

    if (filepath) {
      fs.writeFile('path.txt', filepath, function (err, data) {
        if (err) console.log(err);
      });
      scanFile(filepath)
    }
  })
}

function scanFile(filepath) {
  if(!filepath || filepath[0] == 'undefined') return;
  console.log(filepath)
  fs.readFile(filepath,"utf8", (err,data) => { // ----> *ERROR*
    if(err) console.log(err);
    var arr = [];
    if (data.substr(-4) === '.mp3' || data.substr(-4) === '.m4a'
    || data.substr(-5) === '.webm' || data.substr(-4) === '.wav'
    || data.substr(-4) === '.aac' || data.substr(-4) === '.ogg'
    || data.substr(-5) === '.opus') …