asked on

Defining a constant array of constant strings inside a local scope

I need my method to do something like this:

public void method(List<string> strs){
//Define constant array of constant strings
<some constant type> string[] RequiredVariableNames = {"text", "text2", text3"};

//declare loop
for(int index = 0; index < RequiredVariableNames.Length; index++){
if(str.Contains(RequiredVariableNames[index])){
switch(RequiredVariableNames[index]){
case RequiredVariableNames[0]: <--- compile error here since it is not constant
}
}
}
}

Any advice

SOLUTION

gregoryyoung

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RishadanPort

ASKER

The actual code looks like what it is listed below.

What I am trying to do is if a certain thing does not appear in the MapLayout then I want to add it in myself.

        public void LoadIRCurves(MapLayout curveNames)
        {
             string[] RequiredVariableNames = new string[]{ "IRCurve", "MeanReversionCurve", "CapletVolCurve", "SwaptionVolCurve" };
 
            for (int index = 0; index < RequiredVariableNames.Length; index++)
            {
                //Variable was not found, add default variable into map
                if(curveNames.getVariable(RequiredVariableNames[index]) == null)
                {
                    switch (RequiredVariableNames[index])
                    {
                        case RequiredVariableNames[0]:
                            //Do something
                            break;
                        case RequiredVariableNames[1]:
                            //Do something
                            break;
                        case RequiredVariableNames[2]:
                            break;
                        case RequiredVariableNames[3]:
                            break;
                    }
                }
            }
        }

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RishadanPort

ASKER

A MapLayout contains a group of Variables.

It may be possible that this function is invoked a variable missing. so what I want is that this switch statements adds in a default element into the MapLayout

RishadanPort

ASKER

If you have a suggestion on improving this, I will be happy to hear it.

RishadanPort

ASKER

here is an example what I could do, but this issues the same string twice, and I find it a bit harder to work with in compared to the previous:

        public void LoadIRCurves(MapLayout curveNames)
        {
            string[] RequiredVariableNames = new string[] { "IRCurve", "MeanReversionCurve", "CapletVolCurve", "SwaptionVolCurve" };
 
            for (int index = 0; index < RequiredVariableNames.Length; index++)
            {
                //Variable was not found, add default variable into map
                if (curveNames.getVariable(RequiredVariableNames[index]) == null)
                {
                    switch (RequiredVariableNames[index])
                    {
                        case "IRCurve":
                            //Do something
                            break;
                        case "MeanReversionCurve":
                            break;
                        case "CapletVolCurve":
                            break;
                        case "SwaptionVolCurve":
                            break;
                    }
                }
            }
        }

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SOLUTION

Dmitry G

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Jaime Olivares

Sounds like you need an enumeration instead

RishadanPort

ASKER

Thanks for the idea anarki_jimbel, however it also cannot compile since it produces a "Constant value is expected" syntax error, at the case label

RishadanPort

ASKER

oh wait that worked...

RishadanPort

ASKER

Yes that worked. thanks. What was your suggestion jaime_olivares before I give points out?

Dmitry G

I thing Gegoryyoung is right - why not use index:

public void method(List<string> strs){
   //Define constant array of constant strings
 
 const string c1 = "text1";
 const string c2 = "text2";
 const string c3 = "text3";
 string[] RequiredVariableNames = {c1,c2,c3};
   //declare loop
   for(int index = 0; index < RequiredVariableNames.Length; index++){
      if(strs[0].Contains(RequiredVariableNames[index])){
         switch(index){
                 case 0:  // <--- compile error here since it is not constant
                     break;
             case 1:
                 break;
         }
      }
   }
}

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ASKER CERTIFIED SOLUTION

Jaime Olivares

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RishadanPort

ASKER

ack... I wish I could give you some points too...

RishadanPort

ASKER

Is there any way to do that in a local scope though? I don't want to define that array outside the function.

Jaime Olivares

no, you can't, but it is not an array, and enumeration declaration doesn't generate class members as an array.

RishadanPort

ASKER

Thanks a lot jaime_olivares... I like your way the best. I have requested attention from a moderator to come view this question and give me the ability to give you some points as well.

Thanks a lot!

Jaime Olivares

glad to help :)

Dmitry G

I don't mind splitting my points in any way.
So feel free to do that!

RishadanPort

ASKER

Thanks everyone