Created
December 21, 2017 12:11
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Using F# Data as a runtime type inferencer for a csv file
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using FSharp.Data; | |
using FSharp.Data.Runtime; | |
using FSharp.Data.Runtime.StructuralTypes; | |
using Microsoft.FSharp.Collections; | |
using System; | |
using System.Globalization; | |
using System.Linq; | |
class Program | |
{ | |
static void Main(string[] args) | |
{ | |
// MSFT.csv is same csv as the example of F# Data. See also http://fsharp.github.io/FSharp.Data/library/CsvProvider.html | |
using (var csvFile = CsvFile.Load("C:/Users/urasa/Downloads/MSFT.csv")) | |
{ | |
var meth = typeof(CsvInference).GetMethods().First(_ => _.Name == "CsvFile.InferColumnTypes"); | |
var props = (FSharpList<PrimitiveInferedProperty>)meth.Invoke(null, new object[] { csvFile, 1000, new string[0], CultureInfo.CurrentCulture, string.Empty, true, true, null }); | |
foreach (var prop in props) | |
Console.WriteLine(prop); | |
} | |
} | |
} | |
// Results ------------------------ | |
// {Name = "Date"; | |
// InferedType = System.DateTime; | |
// RuntimeType = System.DateTime; | |
// UnitOfMeasure = null; | |
// TypeWrapper = Option;} | |
// {Name = "Open"; | |
// InferedType = System.Decimal; | |
// RuntimeType = System.Decimal; | |
// UnitOfMeasure = null; | |
// TypeWrapper = Option;} | |
// {Name = "High"; | |
// InferedType = System.Decimal; | |
// RuntimeType = System.Decimal; | |
// UnitOfMeasure = null; | |
// TypeWrapper = Option;} | |
// {Name = "Low"; | |
// InferedType = System.Decimal; | |
// RuntimeType = System.Decimal; | |
// UnitOfMeasure = null; | |
// TypeWrapper = Option;} | |
// {Name = "Close"; | |
// InferedType = System.Decimal; | |
// RuntimeType = System.Decimal; | |
// UnitOfMeasure = null; | |
// TypeWrapper = Option;} | |
// {Name = "Volume"; | |
// InferedType = System.Int32; | |
// RuntimeType = System.Int32; | |
// UnitOfMeasure = null; | |
// TypeWrapper = Option;} |
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