C#•2y ago

✅ Why can't I deserialize list of tuples?

I Got List<bool, string> inside my code. This is how I wrote it down in Json.

"texts": [
    {
        "Item1": true,
        "Item2": "hello"
    },
    {
        "Item1": false,
        "Item2": "hi"
    }
]

"texts": [
    {
        "Item1": true,
        "Item2": "hello"
    },
    {
        "Item1": false,
        "Item2": "hi"
    }
]

But bool is always false and string is always equal to null. Is it wrong format or something?

13 Replies

MODiX•2y ago

ero

REPL Result: Success

var json = """
    [
        {
            "Item1": false,
            "Item2": "foo"
        },
        {
            "Item1": true,
            "Item2": "bar"
        }
    ]
    """;
System.Text.Json.JsonSerializer.Deserialize<List<(bool, string)>>(json)

var json = """
    [
        {
            "Item1": false,
            "Item2": "foo"
        },
        {
            "Item1": true,
            "Item2": "bar"
        }
    ]
    """;
System.Text.Json.JsonSerializer.Deserialize<List<(bool, string)>>(json)

Result: List<ValueTuple<bool, string>>

[
  {
    "item1": false,
    "item2": null
  },
  {
    "item1": false,
    "item2": null
  }
]

[
  {
    "item1": false,
    "item2": null
  },
  {
    "item1": false,
    "item2": null
  }
]

Compile: 564.776ms | Execution: 45.109ms | React with ❌ to remove this embed.

arch_ilOP•2y ago

same problem with me

ero•2y ago

fun

arch_ilOP•2y ago

wait. I think it should be item1 instead of Item1

arch_ilOP•2y ago

nope. still same issue

ero•2y ago

valuetuples just don't work with serialization i guess

MODiX•2y ago

ero

REPL Result: Success

List<(bool, string)> tuples = new()
{
  (false, "foo"),
  (true, "bar")
};

System.Text.Json.JsonSerializer.Serialize(tuples)

List<(bool, string)> tuples = new()
{
  (false, "foo"),
  (true, "bar")
};

System.Text.Json.JsonSerializer.Serialize(tuples)

Result: string

[{},{}]

[{},{}]

Compile: 537.975ms | Execution: 51.936ms | React with ❌ to remove this embed.

arch_ilOP•2y ago

i better create a small class with just bool and string no other option here are there some built in things like tuples?

ero•2y ago

record R(bool B, string S);

MODiX•2y ago

ero

REPL Result: Success

List<(bool, string)> tuples = new()
{
  (false, "foo"),
  (true, "bar")
};

System.Text.Json.JsonSerializer.Serialize(tuples, new JsonSerializerOptions { IncludeFields = true })

List<(bool, string)> tuples = new()
{
  (false, "foo"),
  (true, "bar")
};

System.Text.Json.JsonSerializer.Serialize(tuples, new JsonSerializerOptions { IncludeFields = true })

Result: string

[{"Item1":false,"Item2":"foo"},{"Item1":true,"Item2":"bar"}]

[{"Item1":false,"Item2":"foo"},{"Item1":true,"Item2":"bar"}]

Compile: 599.487ms | Execution: 60.277ms | React with ❌ to remove this embed.

MODiX•2y ago

Angius

REPL Result: Success

using System.Text.Json;

record Thing(bool Item1, string Item2);

var json = """
    [
        {
            "Item1": false,
            "Item2": "foo"
        },
        {
            "Item1": true,
            "Item2": "bar"
        }
    ]
    """;
JsonSerializer.Deserialize<List<Thing>>(json)

using System.Text.Json;

record Thing(bool Item1, string Item2);

var json = """
    [
        {
            "Item1": false,
            "Item2": "foo"
        },
        {
            "Item1": true,
            "Item2": "bar"
        }
    ]
    """;
JsonSerializer.Deserialize<List<Thing>>(json)

Result: List<Thing>

[
  {
    "item1": false,
    "item2": "foo"
  },
  {
    "item1": true,
    "item2": "bar"
  }
]

[
  {
    "item1": false,
    "item2": "foo"
  },
  {
    "item1": true,
    "item2": "bar"
  }
]

Compile: 680.984ms | Execution: 86.612ms | React with ❌ to remove this embed.

ero•2y ago

:/ Item1 and Item2 are fields

arch_ilOP•2y ago

thanks i would have thought to do that

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✅ Why can't I deserialize list of tuples?