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Assignment operation Assignment operation |
| The assignment is the plainest of the operators: it works just like in any other programming language. The syntax is: <target> = <source> <target> must be a variable, <source> can be any parameter. If the <target> variable doesn't exist, it is created. If it already exists, it is eventually converted to the type of <source> (scalar, hash or array). If <source> evaluates to an empty value then the <target> variable is unset. |
Examples |
# Assigning a constant to the variable %Tmp %Tmp = 1 echo %Tmp # Assigning a string constant to the variable %Tmp %Tmp = some string echo %Tmp # Assigning a string constant to the variable %Tmp %Tmp = "some string with whitespace preserved" echo %Tmp # Assigning a variable to another variable copies its contents %Someothervariable = "Contents" %Tmp = %Someothervariable echo %Tmp # Assigning a variable string to the variable %z %color = blue %z = my eyes are %color echo %z # Assigning a variable string (with a function call inside) to the variable %x %x = the system os is $system.osname echo %x # Assigning an empty string to the local variable %y unsets %y %x = echo %y # This is equivalent to the above %y = "" # This is equivalent too, if $function evaluates to an empty string %y = $function() # Assigning a variable string to a hash entry %Dict{key} = $system.osname\ian # Unsetting an array entry %mydict[23] = "" # Assigning a hash to another: %mydict[] becomes a copy of %anotherdict[] %anotherdict{"The key"} = "Some dummy value" %mydict = %anotherdict echo%mydict{"The key"} # This will convert %mydict to be a scalar variable (deleting all the %mydict contents!) %mydict = "some default value" # Unsetting a whole hash %anotherdict = |