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De - Pt| Proverbs, aphorisms, quotations (English) | by Linux fortune |
| === ALL USERS PLEASE NOTE ======================== CAR and CDR now return extra values. The function CAR now returns two values. Since it has to go to the trouble to figure out if the object is carcdr-able anyway, we figured you might as well get both halves at once. For example, the following code shows how to destructure a cons (SOME-CONS) into its two slots (THE-CAR and THE-CDR): (MULTIPLE-VALUE-BIND (THE-CAR THE-CDR) (CAR SOME-CONS) ...) For symmetry with CAR, CDR returns a second value which is the CAR of the object. In a related change, the functions MAKE-ARRAY and CONS have been fixed so they don't allocate any storage except on the stack. This should hopefully help people who don't like using the garbage collector because it cold boots the machine so often. | |
| Speaking as someone who has delved into the intricacies of PL/I, I am sure that only Real Men could have written such a machine-hogging, cycle-grabbing, all-encompassing monster. Allocate an array and free the middle third? Sure! Why not? Multiply a character string times a bit string and assign the result to a float decimal? Go ahead! Free a controlled variable procedure parameter and reallocate it before passing it back? Overlay three different types of variable on the same memory location? Anything you say! Write a recursive macro? Well, no, but Real Men use rescan. How could a language so obviously designed and written by Real Men not be intended for Real Man use? | |
