Menu
I can't find this information from the internet, is it not possible to declare a final constant variable whose value will not change after first initialization?
779
You can create the constants variables using the readonly command or declare command.
You use the Const statement to declare a constant and set its value. By declaring a constant, you assign a meaningful name to a value. Once a constant is declared, it cannot be modified or assigned a new value. You declare a constant within a procedure or in the declarations section of a module, class, or structure.
A constant variable must be initialized at its declaration. To declare a constant variable in C++, the keyword const is written before the variable's data type. Constant variables can be declared for any data types, such as int , double , char , or string .
There are no data types. A variable in bash can contain a number, a character, a string of characters. You have no need to declare a variable, just assigning a value to its reference will create it.
I believe you can do something like:
readonly DATA=/usr/home/data/file.dat You can also do:
declare -r var=123 readonly FOO=bar
32
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
