Created
November 29, 2010 10:17
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T4 template to generate some useful N-Tuple overloads of common System.Reactive extension methods
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<#@ template debug="false" hostspecific="false" language="C#" #> | |
<#@ output extension="Generated.cs" #> | |
<#@ assembly name="System.Core" #> | |
<#@ import namespace="System.Linq" #> | |
<#@ import namespace="System.Runtime.Remoting.Messaging" #> | |
<#@ import namespace="Microsoft.VisualStudio.TextTemplating" #> | |
using System; | |
using System.Linq; | |
using System.Reactive; | |
namespace <#=CallContext.GetData("NamespaceHint")#> | |
{ | |
public static partial class ObservableExtensions | |
{ | |
<# | |
for(int i = 1; i < 8; i++) | |
{ | |
#> | |
public static Tuple<<#=Types(i)#>, TOther> Append<<#=Types(i)#>, TOther>(this <#=Container(i)#> s, TOther o) | |
{ | |
return new Tuple<<#=Types(i)#>, TOther>(<#=Values(i)#>, o); | |
} | |
<# | |
} | |
for(int i = 1; i < 8; i++) | |
{ | |
#> | |
public static IObservable<Tuple<<#=Types(i)#>, TOther>> CombineLatest<<#=Types(i)#>, TOther>(this IObservable<<#=Container(i)#>> source, IObservable<TOther> other) | |
{ | |
return source.CombineLatest(other, Append); | |
} | |
<# | |
} | |
for(int i = 1; i < 8; i++) | |
{ | |
#> | |
public static IObservable<Tuple<<#=Types(i)#>, TOther>> Zip<<#=Types(i)#>, TOther>(this IObservable<<#=Container(i)#>> source, IObservable<TOther> other) | |
{ | |
return source.Zip(other, Append); | |
} | |
<# | |
} | |
#> | |
} | |
} | |
<#+ | |
public string Container(int i) | |
{ | |
return i == 1 ? "T1" : "Tuple<"+Expand(i, "T{0}")+">"; | |
} | |
public string Values(int i) | |
{ | |
return i == 1 ? "s" : Expand(i, "s.Item{0}"); | |
} | |
public string Types(int length) | |
{ | |
return Expand(length, "T{0}"); | |
} | |
public string Expand(int length, string format) | |
{ | |
return string.Join(", ", Enumerable.Range(1, length).Select(x=>string.Format(format, x))); | |
} | |
#> |
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