I am currently using this method from "jeb" to handle many variables. BAT-file: variable contents as part of another variable
setlocal EnableDelayedExpansion
set arr[1]=17
set arr[2]=35
set arr[3]=77
(
set idx=2
set /a var=arr[!idx!]
echo !var!
)
Works well. The problem is that I need to set the value of some variables again. All my attempts have failed miserably.
set set arr[!idx!]=test
call set arr[!idx!]=test
set !arr[!idx!]!=test
Your question is not clear. I don't understand what you mean with "I need to set the value of some variables again". You should describe what you expect and what you really get instead. For this reason I can't offer an exact answer to your question, but just a series of examples:
echo off
setlocal EnableDelayedExpansion
rem The target variable is "b1" or "b2", depending on *current* value of "i":
set i=1
set b1=var1
set b2=var2
call echo %%b%i%%%
rem This works, but only *outside parentheses*
set b%i%=var1changed
call echo %%b%i%%%
rem Inside paren, this works only when "i" var is not changed:
(
set b%i%=var1changed again
call echo %%b%i%%%
set i=2
set b%i%=wrong: this should be b2, but it is b1
call echo %%b%i%%%
)
set b
rem Using delayed expansion for the index works always:
(
set i=1
set b!i!=var1 again, inside paren
call echo %%b!i!%%
set i=2
set b!i!=var2changed
call echo %%b!i!%%
)
set b
Output:
var1
var1changed
var1changed again
wrong: this should be b2, but it is b1
b1=wrong: this should be b2, but it is b1
b2=var2
var1 again, inside paren
var2changed
b1=var1 again, inside paren
b2=var2changed
You may also use a FOR /F command for this management. Further details at this answer.