[英]How to compare existing list with list from user? using dart and flutter
I want the user input to compare with each list (normalList, protanList,deutanList, tritanList)我希望用户输入与每个列表(normalList、protanList、deutanList、tritanList)进行比较
so, assuming if the the user input is 1 - 15 correctly, and the output will be "Normal"因此,假设如果用户输入正确为 1 - 15,则 output 将为“正常”
if the user input is [15,14,1,2,13,12,3,4,11,10,5,6,9,8,7],the output will be "Protan"如果用户输入 [15,14,1,2,13,12,3,4,11,10,5,6,9,8,7],output 将是“Protan”
Please help, this is my final year project and I'm totally blank about what to do请帮忙,这是我最后一年的项目,我完全不知道该怎么做
late List<Box> opaqueBoxes = [];后期列表<Box> opaqueBoxes = []; //to be filled //待填充
//assume opaqueBoxes being input by user here //假设用户在这里输入不透明框
//the result method is to compare the outcome of the result String result() { String result = ''; //result方法是比较result的结果 String result() { String result = ''; if (listEquals(normalList, opaqueBoxes)) { result = "Normal"; if (listEquals(normalList, opaqueBoxes)) { result = "Normal"; } else { result = "Protan"; } else { 结果 = "Protan"; } if (kDebugMode) { print(result); } 如果(kDebugMode){ 打印(结果); } return result; } 返回结果; } }
//here is the list of the correct one //这里是正确的列表
var normalList = [ "1", "2", "3", "4", "5", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15" ]; var normalList = [ "1", "2", "3", "4", "5", "5", "6", "7", "8", "9", "10", "11 ", "12", "13", "14", "15" ]; var protanList = [ "15", "14", "1", "2", "13", "12", "3", "4", "11", "10", "5", "6", "9", "8", "7" ]; var protanList = [ "15", "14", "1", "2", "13", "12", "3", "4", "11", "10", "5", "6 ", "9", "8", "7" ];
var deutanList = [ "1", "15", "2", "3", "14", "13", "4", "12", "5", "6", "11", "10", "7", "9", "8" ]; var deutanList = [ "1", "15", "2", "3", "14", "13", "4", "12", "5", "6", "11", "10 ", "7", "9", "8" ];
var tritanList = [ "1", "2", "3", "4", "5", "6", "7", "15", "8", "14", "9", "13", "10", "11", "12" ]; var tritanList = [ "1", "2", "3", "4", "5", "6", "7", "15", "8", "14", "9", "13 ", "10", "11", "12" ];
So I already documented what I wanted to say in the code below.所以我已经在下面的代码中记录了我想说的话。 But here is a quick one.但这是一个快速的。
First, note that I don't think listEquals
is in support anymore.首先,请注意我认为listEquals
不再受支持。 You will have to create your filter condition.您将必须创建过滤条件。
This is easy and complex.这很简单也很复杂。 There is no way to get a variable name without typing them or writing a new class. Well, deep in and see what I did.如果不输入变量名或编写新的 class,就无法获得变量名。好吧,深入了解一下我做了什么。 I will try and make things easy and strong.我会努力让事情变得简单而强大。
Also when posting a question with the codebase, always use the "Code Sample not the "Blockquote" on your textarea.此外,在使用代码库发布问题时,请始终在文本区域中使用“代码示例”而不是“块引用” 。
If you need further assistance let me know.如果您需要进一步的帮助,请告诉我。
// First, note that I don't think `listEquals` is in support anymore. You will have
// create your filter condition.
// This is easy and complex. There is no way to get a variable name without
// typing them or writing a new class writing a new function. Well, deep in
// and see what I did. I will try and make Things easy and strong.
void main() {
// I changed to type `Box` to `String` as we are getting a string input
late List<String> opaqueBoxes = [
"1",
"15",
"2",
"3",
"14",
"13",
"4",
"12",
"5",
"6",
"11",
"10",
"7",
"9",
"8"
];
// Lists to filter against. Added type casting
final List<String> normalList = [
"1",
"2",
"3",
"4",
"5",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15"
];
final List<String> protanList = [
"15",
"14",
"1",
"2",
"13",
"12",
"3",
"4",
"11",
"10",
"5",
"6",
"9",
"8",
"7"
];
final List<String> deutanList = [
"1",
"15",
"2",
"3",
"14",
"13",
"4",
"12",
"5",
"6",
"11",
"10",
"7",
"9",
"8"
];
final List<String> tritanList = [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"15",
"8",
"14",
"9",
"13",
"10",
"11",
"12"
];
// transform your list-based filter to list of objects based for easy filtering
final List allFilterList = [
{"name": "normal", "list": normalList},
{"name": "protan", "list": protanList},
{"name": "deutan", "list": deutanList},
{"name": "tritan", "list": tritanList},
];
// result output
String result = "No such list!";
for (Map list in allFilterList) {
// filter using `any` Function from dart `List` class
bool filter = opaqueBoxes.any((item) => list["list"].contains(item));
if (filter) result = list["name"];
}
print("result: $result"); // result: tritan
}
#TO PUT EVERYTHING SIMPLY #TO把一切简单
If you need both lists to maintain the same sequence, then try this way:如果您需要两个列表都保持相同的顺序,请尝试以下方式:
bool isSame = a.every((item) => item == b[a.indexOf(item)]);
//List `a` is getting compared with list `b`.
And if you don't need to have the items in exact same sequence you can try this:如果您不需要以完全相同的顺序排列这些项目,您可以试试这个:
bool isSame = a.every((item) => b.contains(item));
//List `a` is getting compared with list `b`.
Now you can try and figure out your ways to create a result from it.现在您可以尝试找出从中创建结果的方法。 And learn in the process.并在这个过程中学习。 Good luck.祝你好运。
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