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Training, Open Source Programming Languages This is page http://www.wellho.net/mouth/2618_Wha ... bols-.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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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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What are Ruby Symbols?
Ruby Symbols are names that follow a : character. They're a quick way of getting at data, where (for example) you have a fixed key or name in a hash, and you'll find them commonly used in many definitions such as in Ruby on Rails. I've put a short example [here] (written 2010-02-02) Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles R107 - Collections (Arrays and Hashes) in Ruby[991] Adding a member to a Hash in Ruby - (2006-12-16) [2291] Collection objects (array and hash) in Ruby - (2009-07-16) [2606] Sorting arrays and hashes in Ruby - (2010-01-30) [2621] Ruby collections and strings - some new examples - (2010-02-03) [2976] Creating, extending, traversing and combining Ruby arrays - (2010-09-30) [3253] Is this number between? Does this list include? - Ruby - (2011-04-18) [3255] Process every member of an array, and sort an array - Ruby - (2011-04-21) [3257] All possible combinations from a list (Python) or array (Ruby) - (2011-04-23) [3435] Sorta sorting a hash, and what if an exception is NOT thrown - Ruby - (2011-09-12) [3757] Ruby - a teaching example showing many of the language features in short but useful program - (2012-06-09) [4368] Shuffling a list - Ruby and Python - (2014-12-28) [4499] Significant work - beyond helloworld in Ruby - (2015-05-27) [4502] Reading and parsing a JSON object in Ruby - (2015-06-01)
Some other Articles
Handling unusual and error conditions - exceptionsDirect access to object variable (attributes) in Ruby Passing code to procedures and yield in Ruby What are Ruby Symbols? Comparing floating point numbers - a word of caution and a solution Defining a static method - Java, Python and Ruby String to number conversion with error trapping in Ruby Neatly formatting results into a table Constants in Ruby |
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.
Link to Ezine home page (for reading).
Link to Blogging home page (to add comments).
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