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Training, Open Source Programming Languages This is page http://www.wellho.net/mouth/1720_Som ... tions.html Our email: info@wellho.net • Phone: 01144 1225 708225 |
| For 2023 (and 2024 ...) - 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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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)) |
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Some Ruby lesser used functions
Tidying up (as one does after the recent server move!), I came across a list of functions in Ruby which are important at times, but not exactly top of the list ... and I thought I would share them here - with a few words on each - in the hope that I might save someone a lot of hairpulling at some stage in the future! abort - teminate your program at_exit - register code to be run when you exit autoload - register a class to be loaded only when used caller - return the current execution stack eval - evalute the given string as ruby code exec - exit and run the given command in its place fork - create a child process (could be a whole module on this!) sub and gsub - perform string substitution (see under regular expressions) lambda, proc - convert a block into a proc object readline - same as gets but throws exception at eof select - checks for availabilty of inputs without blocking sleep - suspend operation for n seconds srand - seed the random number generator syscall, system - run system calls and commands trap - set a signal handler (e.g. if you need to catch ^C) (written 2008-07-26) Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles R119 - Ruby Miscellany[1181] Good Programming practise - where to initialise variables - (2007-05-09) [1586] Variable types in Ruby - (2008-03-21) [1889] Ruby mixins, modules, require and include - (2008-11-16) [1890] MySQL database from Ruby - an example - (2008-11-16) [3155] Rake - a build system using code written in Ruby - (2011-02-03) [3428] How many days to Christmas? - (2011-09-09) [3622] Loading Ruby classes - where does Ruby look? - (2012-02-24) [3783] Load path, load and require in Ruby, and a change from 1.8 to 1.9 - (2012-06-24) [3799] Ruby Documentation through rdoc - (2012-07-07)
Some other Articles
addslashes v mysql_real_escape_string in PHPBath - Melksham - Devizes. Bus route changes, new timetable PHP examples - source code and try it out too Perl 6 - When will we have a production release? Some Ruby lesser used functions A special day - last Friday in July Increasing Java Virtual Machine memory for Tomcat Q - Should I use Perl or Python? Larger applications in PHP Pictures from South Hampshire |
4759 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per pageThis is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.
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