Question

我想保存包含带双引号的空格或空格的字符串列。

export class Task extends React.Component {
  constructor(props){
    super(props);
    this.dataChanged = this.dataChanged.bind(this);
    this.removeCurrentTask = this.removeCurrentTask.bind(this);
    this.saveCurrentTask = this.saveCurrentTask.bind(this);
    this.openCurrentTask = this.openCurrentTask.bind(this);
    this.state = {
      message: this.props.message
    }
  }
  saveCurrentTask () {
    this.props.saveTask(this.props.entryNum);
  }
  customValidateText (text) {
    return (text.length > 0 && text.length < 31);
  }

  dataChanged(data) {
    console.log(data.message);
    this.props.renameTask(data.message,this.props.entryNum);
    this.setState({ message: data.message });
  }

  removeCurrentTask () {
    this.props.deleteTask(this.props.entryNum);
  }
  openCurrentTask () {
    this.props.openTask(this.props.entryNum);
  }
  render () {
    const centerRow = classNames('textCenter', 'row'),
          iconSetup = this.props.iconClasses,
          domIcons = [];
    for (let icon in iconSetup) {
      if (iconSetup.hasOwnProperty(icon)) {
        let element = iconSetup[icon];
        domIcons.push(<Icon className={classNames('large', element['inClass'])} onClick={element['clickFun']}/>)
      }
    }
    return (
      <div className={centerRow}>
        {domIcons}
      </div>
    );
  }
}

Answer 1

如果你有这个：

df$label
#> [1] ""                            "Change working directory..."
#> [3] ""                            "Open script file..."        
#> [5] "Save script..."              "Save script as..."

你想用双引号包装内容，你可以这样做：

df$label <- paste0('"', df$label, '"')
df$label

#> [1] "\"\""                            "\"Change working directory...\""
#> [3] "\"\""                            "\"Open script file...\""        
#> [5] "\"Save script...\""              "\"Save script as...\""

一次更新所有列

使用基础R（改编自@ r2evans的评论）

df[] <- lapply(df, function(x) paste0('"', x, '"'))

或者如果你喜欢使用类似dplyr的东西，你可以这样做：

library(dplyr)
df <- mutate_all(df, ~ paste0('"', ., '"'))

Answer 2

您可以将""替换为'""'。

使用双引号（“”）保存字符列

2 个答案: