tryParseString static method
解析String,失败返回null
Implementation
static String? tryParseString(dynamic v) {
if (v is String) {
return v;
} else if (v != null) {
return v.toString();
}
return null;
}
解析String,失败返回null
static String? tryParseString(dynamic v) {
if (v is String) {
return v;
} else if (v != null) {
return v.toString();
}
return null;
}