, C# . . 12, ISeries. (, ISeries , .) , , .
// , using System;
public interface ISeries<T> {
T GetNext();//
void Reset(); // void SetStart(T v); //
}
// ISeries, class ByTwos<T>: ISeries<T> {
T start;
T val;
// , // , public delegate IncByTwo( v);
// ,
// ByTwos.
IncByTwo incr;
public ByTwos(IncByTwo incrMeth) { start = default(T); val = default(T); incr = incrMeth;
}
public T GetNext() { val = incr(val); return val;
}
public void Reset() {
val = start;
}
public void SetStart(T v) { start = v; val = start;
}
}
class ThreeD {
public int x/ , z;
public ThreeD(int a, int b, int c) { x = a;
= b;
z = c;
}
}
class GenlntfDemo {
// // int. static int IntPlusTwo(int v) { return v + 2;
}
// // double, static double DoublePlusTwo(double v) { return v + 2.0;
}
// // ThreeD. static ThreeD ThreeDPlusTwo(ThreeD v) { if(v==null) return new ThreeD(0, 0, 0); else return new ThreeD(v.x + 2, v.y + 2, v.z + 2);
}
static void Main() {
// // int. ByTwos<int> intBT = new ByTwos<int>(IntPlusTwo);
for(int i=0; i < 5; i++)
Console.Write(intBT.GetNext() + " ");
Console.WriteLine();
// // double. ByTwos<double> dblBT =
new ByTwos<double>(DoublePlusTwo); dblBT.SetStart(11.4);
for(int i=0; i < 5; i++)
Console.Write(dblBT.GetNext() + " ");
Console.WriteLine();
// // ThreeD.
ByTwos<ThreeD> ThrDBT = new ByTwos<ThreeD>(ThreeDPlusTwo);
ThreeD coord;
coord.z + " ");
}
Console.WriteLine();
}
}
.
2 4 6 8 10
13.4 15.4 17.4 19.4 21.4 0, 0, 0 2,2,2 4, 4, 4 6, 6, 6 8, 8,8
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. ISeries .
public interface ISeries<T> {
, , .
ByTwos, I series.
class ByTwos<T>: ISeries<T> {
ByTwos, ISeries. . , , . , , .
class ByTwos: ISeries<T> { // !
, ISeries, ByTwos. .
, (val) (start), . IncByTwo. , , . ByTwos , - . ByTwos , . incr. , incr.
ThreeD. (X,Z,Y). ByTwos.
Genlntf Demo int, double ThreeD. ByTwos . ThreeDPlusTwo ().
// // ThreeD. static ThreeD ThreeDPlusTwo(ThreeD v) { if(v==null) return new ThreeD(0, 0, 0); else return new ThreeD(v.x + 2, v.y + 2, v.z + 2);
}
, v (null). , ThreeD . , v default () ByTwos. . SetStart(),TO v . , .
, . ISeries .
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public interface ISeries<T> where T: class {
ISeries, , .
class ByTwos<T>: ISeries<T> where T: class {
ISeries . , ByTwos<ThreeD>, ByTwos<int> ByTwos<double>.
. , Is In (), true, . .
// !
public static bool IsIn<T>(T what, T[] obs) { foreach(T v in obs)
if(v == what) // ! return true;
Return false;
}
, . , , . ? , ? . , .
IComparable IComparable<T> / IEquatable<T>. IComparable (), IEquatable<T> Equals (). IComparable , . IE qua table . System C# , int, string double. . , IEquatable<T>. IEquatable<T> .
public interface IEquatable<T>
