September 2017
Intermediate to advanced
466 pages
9h 33m
English
Content preview from Go Systems Programming
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An advanced example of pattern matching
In this section, you will learn how to swap the values of two fields of each line of a text file, provided they are in the correct format. This mainly happens in log files or other text files where you want to scan a line for certain types of data, and if the data is found, you might need to do something with them: in this case, you will change the place of the two values.
The name of the program will be swapRE.go, and it will be presented in four parts. Once again, the program will read a text file line by line and try to match the desired strings before swapping them. The utility will print the contents of the new file on the screen; it is the responsibility of the user to save the results to a new ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.