小编use*_*070的帖子

我有两个类,一个用于定义算法参数,另一个用于实现算法:

1级(算法参数):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace VM_Placement
{
    public static class AlgorithmParameters
    {
        public static int pop_size = 100;
        public static double crossover_rate = 0.7;
        public static double mutation_rate = 0.001;

        public static int chromo_length = 300;
        public static int gene_length = 4;
        public static int max_allowable_generations = 400;

        static Random rand = new Random();
        public static double random_num = rand.NextDouble();
    }
}

2级(实现算法):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace VM_Placement
{ …

我在一个类中有2个函数,并且在调用ParseBits()函数时出现错误即" int num_elements = ParseBits(bits, buffer);"因为我传递的"缓冲区"争论" public int ParseBits(string bits, int* buffer)":

功能1:

public float AssignFitness(string bits, int target_value)
        {

   //holds decimal values of gene sequence
   int[] buffer = new int[(VM_Placement.AlgorithmParameters.chromo_length / VM_Placement.AlgorithmParameters.gene_length)];

   int num_elements = ParseBits(bits, buffer);

   // ok, we have a buffer filled with valid values of: operator - number - operator - number..
   // now we calculate what this represents.
   float result = 0.0f;

   for (int i=0; i < num_elements-1; i+=2)
   {
      switch (buffer[i])
      { …

我想在我的程序中使用一些全局变量.我们有什么可以帮助直接定义全局变量,因为我们在C++中有#define.

例如:假设我在C++中有下面提到的全局变量:

#define CROSSOVER_RATE            0.7
#define MUTATION_RATE             0.001
#define POP_SIZE                  100        
#define CHROMO_LENGTH             300
#define GENE_LENGTH               4
#define MAX_ALLOWABLE_GENERATIONS   400

我希望在我的C#程序中将它们定义为全局变量.请让我知道我该怎么办？

当我执行以下代码时,我得到map/set迭代器不可递增的错误.

typedef std::multimap<int, int> MapType;

assgnt::MapType my_map;
assgnt::MapType::iterator it;
for(it = my_map.begin(); it != my_map.end(); )
{
    my_map = obj1.addGoodNeighbours(it->first, it->second, my_map); 
    ++it;
}

请帮忙

我有一个类定义了几个全局变量,如下所示:

namespace Algo
{
    public static class AlgorithmParameters
    {
        public int pop_size = 100;

    }
}

在我的另一个csharp文件中,它也包含main(),在main()中我声明了一个类型结构数组,数组大小为pop_size,但是我收到了一些错误"chromo_typ Population[AlgorithmParameters.pop_size];".请在下面找到代码.我是否使用不正确的语法进行可变长度大小的数组声明？

namespace Algo
{
    class Program
    {
        struct chromo_typ
        {
            string   bits;  
            float    fitness;

            chromo_typ() {
                bits = "";
                fitness = 0.0f;
            }

            chromo_typ(string bts, float ftns)
            {
                bits = bts;
                fitness = ftns;
            }
        };

        static void Main(string[] args)
        {

            while (true)
            {
                chromo_typ Population[AlgorithmParameters.pop_size];
            }
        }
    }
}

错误是:

Bad array declarator: To declare a managed array the rank …

我在我的程序中使用了一个结构如下:

public struct chromo_typ
{
        public string   bits;  
        public float    fitness;

        chromo_typ(string bts, float ftns)
        {
            bits = bts;
            fitness = ftns;
        }
};

我正在使用结构中定义的构造函数,即我的main()中的chromo_typ(string bts,float ftns).我的main()包含以下代码:

chromo_typ[] temp = new chromo_typ[VM_Placement.AlgorithmParameters.pop_size];

                    chromo_typ ct = new chromo_typ();

                    int cPop = 0;

                    //loop until we have created POP_SIZE new chromosomes
                    while (cPop < VM_Placement.AlgorithmParameters.pop_size)
                    {
                        // we are going to create the new population by grabbing members of the old population
                        // two at a time via roulette wheel selection.
                        string …