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This script cleans the Docker.qcow2 file that takes a lot of disk space with Docker For Mac. You can specify some Docker images that you would like to keep.
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This is a very simple git workflow. It (and variants) is in use by many people.
I settled on it after using it very effectively at Athena.
GitHub does something similar; Zach Holman mentioned it
in this talk.
Update: Woah, thanks for all the attention. Didn't expect this simple rant
to get popular.
Post explaining why objects often use less memory than arrays (in PHP)
Why objects (usually) use less memory than arrays in PHP
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:
A palavra stream significa corrente. Em geral, qualquer conexão de rede é uma stream, e existem vários tipos de protocolos para streams. Esses protocolos definem como os dados fluem na corrente.
Beautiful Validation... Why have I never thought of this before?!
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