我试图弄清楚如何从字符串中删除某些字符。不幸的是,它不起作用。我将不胜感激。
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Colors.deepPurple,
title: Text('Справочник'),
),
body: ListView.separated(
itemCount: data.length,
itemBuilder: (context, index) {
return Container(
height: 50,
alignment: Alignment.center,
child: Expanded(
child: GestureDetector(
child: Text('${data[index].name}', textAlign: TextAlign.center,),
onTap: () {
Navigator.push(context, MaterialPageRoute(builder: (context) => FoodByGroup(dataFood: data[index].foods,)));
},
),
),
);
},
separatorBuilder: (BuildContext context, int index) => const Divider(),
),
);
}
} ```
答案 0 :(得分:0)
改为使用replace
呢?
def delete_char(string, target_char, replacement_char=""):
return string.replace(target_char, replacement_char)
print(delete_char("I want \n to test \n if you \n work", "\n"))
答案 1 :(得分:0)
您需要将字符串值重新分配给已删除的表单。另外,我建议在该位置使用replace而不是remove,并将其替换为空字符。这样的事情应该起作用:
def delete_char(string):
string = string.replace("\n", "")
return string
答案 2 :(得分:0)
您可以使用str.split
和str.join
:
>>> ' '.join("I want \n to test \n if you \n work".split())
I want to test if you work
这与删除换行符不同,但是它将确保单词之间只有一个空格。
否则,只需将换行符替换为空:
>>> "I want \n to test \n if you \n work".replace('\n', '')
I want to test if you work