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For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
Reformatting question

Posted by enquirer (enquirer), 3 November 2002
I want to parse some large files and put them into a format that will go into a database. Not every line has complete information. Some of the information is missing. I need to throw away the descriptions and leave behind the good info ....

The file has lines that look like this: country=US:state=TX:city=Dallas:areacode=214:lat=42.5044:long=-71.1964:timezone=CST:etc...

I want

Posted by admin (Graham Ellis), 3 November 2002
How about splitting each line at : and = into a hash:
       %line = ($wholeline =~ /([^:]+)=([^:]+)/g);
then re-joining a list slice
       $newline = join(":",@line{country,state,city,lat});

Tried it out on your data - worked for me. Note the assignment of a regular expression match straight into a hash (it's very useful that the key and value come in that order in the match), and the use of a hash slice.

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