valuetuple

问题 I have just included a DLL file into my project and am using a method which returns a List<Tuple> . I have only recently became aware of the ValueTuple datatype in C# 7 and want to use it instead of the normal Tuples which are returned. I am aware that I could loop through and do the conversion manually however I would like to avoid doing this if possible and was wondering if anyone was aware of a shorthand way to casting a Tuple to a ValueTuple? If I am being ignorant and this isn't possible

问题 I'm trying to deserialize [{"foo": "1", "bar": false}, {"foo": "2", "bar": false}] into List<(string, bool)> type: JsonConvert.DeserializeObject<List<(string foo, bool bar)>>(json) But always get a list of default values - (null, false) . How can I achieve correct deserializing? P.S. I'm not interested in any model/class for that purpose. I need exactly value tuple instead. 回答1: The C# tuple feature was created to represent sets of values, not entities. The names of the values are like the

来源： https://stackoverflow.com/questions/48940210/casting-a-valuetuple-from-a-cached-object

来源： https://stackoverflow.com/questions/48940210/casting-a-valuetuple-from-a-cached-object

来源： https://stackoverflow.com/questions/55588765/pass-valuetuple-instead-of-arguments

来源： https://stackoverflow.com/questions/53831071/are-valuetuples-suitable-as-dictionary-keys

来源： https://stackoverflow.com/questions/53831071/are-valuetuples-suitable-as-dictionary-keys

来源： https://stackoverflow.com/questions/48087463/how-to-dynamically-iterate-detect-member-types-in-valuetuple-that-has-null-membe

问题 I'm using .NET Framework 4.7, I have implemented several of syntax like this Task<(bool isSuccess, string message)> DownloadFileResource() And it already worked by getting there result with var var downloadResult = await BlobUtils.DownloadFileResource() But today when I open visual studio, all my var transform to dynamic type as a suggestion from IDE, not a (bool isSuccess, string message) anymore, and throw error when running it Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'System

问题 I'm using .NET Framework 4.7, I have implemented several of syntax like this Task<(bool isSuccess, string message)> DownloadFileResource() And it already worked by getting there result with var var downloadResult = await BlobUtils.DownloadFileResource() But today when I open visual studio, all my var transform to dynamic type as a suggestion from IDE, not a (bool isSuccess, string message) anymore, and throw error when running it Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'System