help with finding if variable is set

[dok]

Which way would be the best and most reliable to find out of a variable is/isn't empty that would also work in arrays and with String.Arg?

This is something I've come up with for strings using String.Arg, but is there an easier or better way?

Code: Select all

/declare string global
/varset string "This is a string"

/newif ${Bool[${String[@string].Arg[3]}]} {
    /echo true
} else /echo false

/newif ${Bool[${String[@string].Arg[6]}]} {
    /echo true
} else /echo false

Leaving off the $Bool part crashes the if when the value is found


I really dont know what to do about going through an array. this is what I have so far, but its never returning false.

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/declare array1 array
/declare array_count global
/varset array1(0) test
/varset array1(1) test
/varset array1(2) test

/varset array_count 0
:checkarray
    /newif ${Bool[@array1(@array_count)]} {
        /echo @array_count - true  - @array1(@array_count)
    } else {
        /echo @array_count - false - @array1(@array_count)
        /return
    }
    /varadd array_count 1
    /goto :checkarray

Also tried w/o the Bool, but it never seems to return falso because when its unset, it returns "UNDEFINED-ARRAY-ELEMENT", so I tried this...

/newif ${String[@array1(@array_count)].NotEqual["UNDEFINED-ARRAY-ELEMENT"]}

as my if statement, and it works, but is there a better way?


(btw, using 4/8/04 build with mq2parms and mq2data enabled)

[ml2517]

As far as I know:

Code: Select all

/newif ${String[@array1(@array_count)].NotEqual[UNDEFINED-ARRAY-ELEMENT]} /echo Whatever

Is the best way.