通过操作字符串创建函数语法 [英] Creating function syntax by manipulating string

问题描述

我正在尝试创建动态语法函数，函数语法如下:

I am trying to create dynamic syntax function and function syntax is like below:

MyFunction( arg1,arg2,ar3.....);

我有这样的字符串:

str = Previousvalue.Value1,Previousvalue.Value2

现在，我想在最终变量中创建如下语法:

Now I would like to create syntax like this in final variable :

String final = MyFunction(Previousvalue.Value1,',',Previousvalue.Value2);

str = Previousvalue.Value1,Previousvalue.Value2,Previousvalue.Value3;
String final = MyFunction(Previousvalue.Value1,',',Previousvalue.Value2,',',Previousvalue.Value3);

这是我尝试使用string.join实现的方式(不使用循环)，但没有得到如何做的方法，而且如果不使用循环，这似乎是不可能的:

This is how I am trying to achieve with string.join (without using loop) but not getting how to do it and this seems like impossible to do without using loop:

final =  string.Join("MyFunction(", str.Split(','));

案例1:

Input : string str =Previousvalue.Value1,Previousvalue.Value2

输出:

string final=MyFunction(Previousvalue.Value1,',',Previousvalue.Value2,',',Previousvalue.Value3);

案例2:

Input : str = Previousvalue.Value1,Previousvalue.Value2,Previousvalue.Value3;

输出:

String final = MyFunction(Previousvalue.Value1,',',Previousvalue.Value2,',',Previousvalue.Value3);

案例3:

string input = " Previousvalue.Value1";

输出:

String final = Previousvalue.Value1; //No function

推荐答案

据我了解，您想生成一个字符串，如下所示:

From what I understand, you want to generate a string like this:

"MyFunction(Previousvalue.Value1,',',Previousvalue.Value2);"
 ^..........^...................^....^...................^.
 prefix     arg1                sep  arg2                suffix

或换句话说

prefix = "MyFunction(";
separator = ",',',";
suffix = ");"

可以通过将prefix和suffix从string.Join中移出并使用上面的separator值来实现:

which can be achieved by moving the prefix and suffix out of the string.Join and using the above separator value:

string final = "MyFunction(" + string.Join(",',',", str.Split(',')) + ");";

也可以使用string.Replace代替Split/Join:

string final = "MyFunction(" + str.Replace(",", ",',',") + ");";

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