Question

我有一个看起来像这样的数据框

df=data.frame(ID=c(1,2,3),hashtag=c('c("#job", "#inclusion<U+0085>", "#driver", "#splitme")','c("#job", "#inclusion<U+0085>", "#driver")','c("#job", "#inclusion<U+0085>")'))

我首先进行一些清理工作，然后根据每个单元格中的主题标签数量将列hashtag拆分为多个列。例如，第一列有4个主题标签，因此将分为四个不同的列#job，#inclusion，diversity，splitme

我尝试了以下

#Clean up
#Remove inverted commas
df$hashtag <- gsub('"', '', df$hashtag)

#Remove brackets
df$hashtag <-gsub("c\\(|\\)", "", df$hashtag)

#Then Split columns
df_split=df%>% separate(hashtag, c("A", "B","C","D"),sep=', ',extra = "drop")

当我尝试使用以下代码行删除unicode时，没有任何反应。

#Remove unicode
df$hashtag <-gsub("\\<|\\>", "", df$hashtag)

关于什么是正确的解决方案的任何想法？

Answer 1

您没有指定输出，但您可以按照

进行操作

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class ListRemoveFromListener extends Application {

    boolean changing = false;

    @Override
    public void start(Stage primaryStage) throws Exception {
        VBox vbox = new VBox();

        Button buttonSuccess = new Button("remove success");
        buttonSuccess.setOnAction(e -> {
            removeSuccess();
        });

        Button buttonBreak = new Button("Remove breaks");
        buttonBreak.setOnAction(e -> {
            removeBreaks();
        });

        vbox.getChildren().addAll(buttonSuccess, buttonBreak);

        Scene scene = new Scene(vbox);

        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * If we try in listener to remove element just next to one that was
     * initially removed, exception is thrown.
     */
    private void removeBreaks() {
        ObservableList<String> list = FXCollections.observableArrayList();
        list.add("first");
        list.add("second");
        list.add("third");
        list.add("fourth");
        list.add("fifth");
        list.add("sixth");

        list.addListener(new ListChangeListener<String>() {

            @Override
            public void onChanged(Change<? extends String> c) {
                list.remove("second");
            }
        });

        list.remove("third");
    }

    /**
     * If we try in listener to remove element that is not just next to initially
     * removed element, element is removed and all works O.
     */
    private void removeSuccess() {
        ObservableList<String> list = FXCollections.observableArrayList();
        list.add("first");
        list.add("second");
        list.add("third");
        list.add("fourth");
        list.add("fifth");
        list.add("sixth");

        list.addListener(new ListChangeListener<String>() {

            @Override
            public void onChanged(Change<? extends String> c) {
                list.remove("fifth");
            }
        });

        list.remove("third");
    }

    public static void main(String[] args) {
        launch(args);
    }

}

R使用正则表达式删除Unicode

1 个答案: