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What is the billion dollar mistake?
While undefined has been in existence since the creation of coding, null is the misguided invention of British computer scientist Tony Hoare (most famous for his Quicksort algorithm) in 1964, who coined his invention of null references as his “billion dollar mistake”.
Is NULL a mistake?
This exception for a singular NUL character has caused innumerable errors: API weirdness, security vulnerabilities, and buffer overflows. NULL is the worst CS mistake; more specifically, NUL-terminated strings are the most expensive one-byte mistakes.
Why do we have NULL?
A NULL value is a special marker used in SQL to indicate that a data value does not exist in the database. In other words, it is just a placeholder to denote values that are missing or that we do not know. NULL can be confusing and cumbersome at first.
Is null a mistake?
Why do we have null?
Null Pointer References: The Billion Dollar Mistake 1 null is an object that is a assigned where the null value is a member of every type, defined to have a neutral behavior… 2 undefined is the evaluation of a variable or value that has been declared but not yet been assigned More
Who is the inventor of the word null?
While undefined has been in existence since the creation of coding, null is the misguided invention of British computer scientist Tony Hoare (most famous for his Quicksort algorithm) in 1964, who coined his invention of null references as his “billion dollar mistake”.
When did I Make my billion dollar mistake?
I call it my billion-dollar mistake. It was the invention of the null reference in 1965. At that time, I was designing the first comprehensive type system for references in an object oriented language (ALGOL W). My goal was to ensure that all use of references should be absolutely safe, with checking performed automatically by the compiler.
Is the C gets function a billion dollar mistake?
If the billion dollar mistake was the null pointer, the C `gets` function is a multi-billion dollar mistake that created the opportunity for malware and viruses to thrive