/
DeepSelect.cs
47 lines (38 loc) · 1.44 KB
/
DeepSelect.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Symbolism
{
namespace DeepSelect
{
public static class Extensions
{
public static MathObject DeepSelect(this MathObject obj, Func<MathObject, MathObject> proc)
{
var result = proc(obj);
if (result is Power)
{
return
(result as Power).bas.DeepSelect(proc) ^
(result as Power).exp.DeepSelect(proc);
}
if (result is Or)
return (result as Or).Map(elt => elt.DeepSelect(proc));
if (result is And)
return (result as And).Map(elt => elt.DeepSelect(proc));
if (result is Equation)
return
(result as Equation).a.DeepSelect(proc) ==
(result as Equation).b.DeepSelect(proc);
if (result is Sum)
return
new Sum() { elts = (result as Sum).elts.Select(elt => elt.DeepSelect(proc)).ToList() }.Simplify();
if (result is Product)
return
new Product() { elts = (result as Product).elts.Select(elt => elt.DeepSelect(proc)).ToList() }.Simplify();
return result;
}
}
}
}