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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 under R119 - Ruby Miscellany[3799] Ruby Documentation through rdoc - (2012-07-07) [3783] Load path, load and require in Ruby, and a change from 1.8 to 1.9 - (2012-06-24) [3622] Loading Ruby classes - where does Ruby look? - (2012-02-24) [3428] How many days to Christmas? - (2011-09-09) [3155] Rake - a build system using code written in Ruby - (2011-02-03) [1890] MySQL database from Ruby - an example - (2008-11-16) [1889] Ruby mixins, modules, require and include - (2008-11-16) [1586] Variable types in Ruby - (2008-03-21) [1181] Good Programming practise - where to initialise variables - (2007-05-09) 54da
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