String

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Definition

STRING

Strings are a sort of character array, combining characters to form text. Because the length of a string is dynamic, adding them is done easily. Single and double quotes can be used to create strings.

Example

Program strings;
Private
    String name;
    String surname;
Begin
    name = "Yo";
    surname = "Momma";

    say(name + " " + surname + " has entered.");
    say('User logged on: "' + name + " " + surname + '"');

    Repeat
        frame;
    Until(key(_ESC))

End

Used in example: say(), key()


Notes

There are some things to be aware of with strings of the "string" data type:


- Don't manually allocate data structures with strings in them (more specifically, don't use alloc()/calloc()/realloc() and free() on them).

- Do not use memmove() or memcopy() on string variables or structures/arrays containing them.

- Bennu strings are integer identifiers, so using sizeof with them is pointless, as it will always return the size of an int. This is because bennu creates it's own internal database for strings, and therefore it is simply an identifier.

- Internally, the string data itself is a character array delimited with a NULL character, just like an ANSI / C string.

- The memory for these strings is managed by bennu, thus manual memory operations on them can cause harm on bennu's internal string managment.

- All local/private/public strings are automatically released (free) when processes/functions die or exit.


However, if you want to do some manual memory managment on strings you can:

- Create a simple character array yourself.


If you want to create a string list:

- You can create a linked list of processes using their Father and Son fields to create the links.

- Use textfiles.

- Create on big string in combination with an array that contains information about substrings.

- Create an array of character arrays.