December 2018
Intermediate to advanced
222 pages
6h 6m
English
Content preview from Blockchain Quick Start Guide
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Pragma
The first line containing the keyword pragma simply says that the source code file will not compile with a compiler earlier than version 0.4.24. Anything newer does not break functionality. The ^ symbol implies another condition—the source file will not work either on compilers beyond version 0.5.0.
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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.