redefine

I originally had an array[1..1000] that was defined as a global variable. But now I need that to be n, not 1000 and I don't find out n until later. I know what n is before I fill the array up but I need it to be global therefore need a way to define the size of a global array at run time. Context is filling an array with a linear transformation of the bytes in a file. I don't know how big the file is until someone wants to open it and the files can be of any size. As of Delphi 4, Delphi supports dynamic arrays . You can modify their sizes at run time and they will retain the data you stored in

Is there any way to redefine a class or some of its methods without using typical inheritance? For example: class third_party_library { function buggy_function() { return 'bad result'; } function other_functions(){ return 'blah'; } } What can I do to replace buggy_function() ? Obviously this is what I would like to do class third_party_library redefines third_party_library{ function buggy_function() { return 'good result'; } function other_functions(){ return 'blah'; } } This is my exact dilemma: I updated a third party library that breaks my code. I don't want to modify the library directly,