Эта статья является вольным изложением идей из этой замечательной книги JavaScript Spressore (обязательно к прочтению).
Вы ранее привлекались за хранение данных в глобальных переменных? | |
Вы когда-нибудь делали .Net за деньги? | |
Сформулируйте зависимость времени исправления критического бага от seniority присутствующего менеджера | |
В своём резюме вы указали знание php. вам не стыдно? | |
Перед вами кисть, холст и мольберт. напишите компилятор |
# alias to edit commit messages without using rebase interactive | |
# example: git reword commithash message | |
reword = "!f() {\n GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f" | |
# aliases to change a git repo from private to public, and public to private using gh-cli | |
alias gitpublic="gh repo edit --accept-visibility-change-consequences --visibility public" | |
alias gitprivate="gh repo edit --accept-visibility-change-consequences --visibility private" | |
# delete all your repos using gh-cli (please do not run this unless you want to delete all your repos) | |
gh repo list --limit 300 --json url -q '.[].url' | xargs -n1 gh repo delete --yes |
This is just a small post in response to [this tweet][tweet] by Julien Pauli (who by the way is the release manager for PHP 5.5). In the tweet he claims that objects use more memory than arrays in PHP. Even though it can be like that, it's not true in most cases. (Note: This only applies to PHP 5.4 or newer.)
The reason why it's easy to assume that objects are larger than arrays is because objects can be seen as an array of properties and a bit of additional information (like the class it belongs to). And as array + additional info > array
it obviously follows that objects are larger. The thing is that in most cases PHP can optimize the array
part of it away. So how does that work?
The key here is that objects usually have a predefined set of keys, whereas arrays don't:
Awesome PHP has been relocated permanently to its own Github repository. No further updates will made to this gist.
Please open an issue for any new suggestions.