Pointers are fixed size (either 32 or 64bits). When a project got bigger, it's sometimes useful to "shrink" the number of pointers you're passing around. Nicho

Pointers are fixed size (either 32 or 64bits). When a project got bigger, it's sometimes useful to "shrink" the number of pointers you're passing around. Nicholas Nethercote has a blog about his work on this on Firefox : https://blog.mozilla.org/nnethercote/ https://blog.mozilla.org/nnethercote/ (e.g. https://blog.mozilla.org/nnethercote/2011/11/01/spidermonkey-is-on-a-diet/ https://blog.mozilla.org/nnethercote/2011/11/01/spidermonkey...)