August 2011
Intermediate to advanced
280 pages
6h 50m
English
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Isolated Mutable Design
I can walk up to the board, but instead of putting down the initial total of 0, I can put my phone number so everyone in the room can text their work years to me.
Each person now sends me the information from the comfort of their seats. They don’t have to wait in line, and they’re done as fast as they can punch those smartphone keys.
I’d receive the years in sequence as they arrive, but the senders are concurrent and nonblocking.
Isolated mutability is at work here. The total is isolated: only I hold this value, and others can’t access it. By isolating the mutable state, we’ve eliminated the problems of the previous approach. There are no worries of two or more people changing the stuff at the same time.
I’d continue ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.