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switch case: several equivalent cases expressions in r


switch case: several equivalent cases expressions in r

By : user2952828
Date : November 19 2020, 03:59 PM
This might help you My personal choice would be to remap your k to the overlapping cases. Example:
code :
k<-1:20
kmatch<-(k-1)%%9 +1
# [1] 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2


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A Switch Java problem : case expressions must be constant expressions

A Switch Java problem : case expressions must be constant expressions


By : Nick Munoz
Date : March 29 2020, 07:55 AM
help you fix your problem So it can be evaluated during the compilation phase ( statically check )
See: http://docs.oracle.com/javase/specs/jls/se7/html/jls-14.html#jls-14.11 for a formal definition of the switch.
code :
class Switch {
  void x(int n ) {
    switch( n ) {
      case 1: System.out.println("one"); break;
      case 9: System.out.println("nine"); break;
      default:  System.out.println("nothing"); break;
    }
  }
}
C:\>javap -c Switch
Compiled from "Switch.java"
class Switch extends java.lang.Object{
Switch();
  Code:
   0:   aload_0
   1:   invokespecial   #1; //Method java/lang/Object."<init>":()V
   4:   return

void x(int);
  Code:
   0:   iload_1
   1:   lookupswitch{ //2
                1: 28;
                9: 39;
                default: 50 }
   28:  getstatic       #2; //Field java/lang/System.out:Ljava/io/PrintStream;
   31:  ldc     #3; //String one
   33:  invokevirtual   #4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
   36:  goto    58
   39:  getstatic       #2; //Field java/lang/System.out:Ljava/io/PrintStream;
   42:  ldc     #5; //String nine
   44:  invokevirtual   #4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
   47:  goto    58
   50:  getstatic       #2; //Field java/lang/System.out:Ljava/io/PrintStream;
   53:  ldc     #6; //String nothing
   55:  invokevirtual   #4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
   58:  return

}
 1:   lookupswitch{ //2
            1: 28;
            9: 39;
            default: 50 }
   39:  getstatic       #2; //Field java/lang/System.out:Ljava/io/PrintStream;
   42:  ldc     #5; //String nine
   44:  invokevirtual   #4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
   47:  goto    58
   58:  return
Is it possible to use a switch statement with expressions as cases?

Is it possible to use a switch statement with expressions as cases?


By : Todd Wesslowski
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , You are effectively not matching numbers any more, but matching the boolean outcome.
Any positive or negative number casts to boolean true and only 0 casts to false, so basically for a positive or negative number you are comparing true to ($x < 0) or ($x > 0) and that gives the outcome you expect.
Switch - case expressions must be constant expressions, I can't make the if-else statment

Switch - case expressions must be constant expressions, I can't make the if-else statment


By : deleonant
Date : March 29 2020, 07:55 AM
it fixes the issue Take a look at the official blog post about this:
http://tools.android.com/recent/switchstatementconversion
code :
int id = view.getId();
if (id == R.id.button1) {
    action1();
} else if (id == R.id.button2) {
    action2();
} else if (id == R.id.button3) {
    action3();
}
Switch statement eclipse error: case expressions must be constant expressions

Switch statement eclipse error: case expressions must be constant expressions


By : melodz dumay crisost
Date : March 29 2020, 07:55 AM
This might help you I wrote a program that would output a flower based off the color I will input. In the switch statement, I keep seeing an error stating that the "case expressions must be constant expressions." I don't see where I am doing it wrong. I'm also having an issue of printing out the plural tense of the flower (if the user would input 2 or higher). , Mark the variables red, purple, etc, as final.
Multiple cases in c# 8.0 switch expressions

Multiple cases in c# 8.0 switch expressions


By : Alejandro
Date : March 29 2020, 07:55 AM
wish of those help It should be implemented in more cleaner way in my opinion, but the way I am doing it is like this:
code :
private int GetValue(int val) =>
    val switch
    {
        int i when new List<int> {1, 2, 3}.Contains(i) => DoSomeStuff(),
        int j when (j == 6 || j == 5 || j == 4) => DoSomeDifferentSwitch(),
        _ => DefaultSwitch()
    };
colorBand switch
    {
        Rainbow.Red or Rainbow.Orange => new RGBColor(0xFF, 0x7F, 0x00),
        _ => throw new ArgumentException(message: "invalid enum value", paramName: nameof(colorBand)),
    };
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