Snipplr

(Ruby) Irb power tricks with Wirble & Utility-Belt - cczona

Fri, 28 Mar 2008 12:24:12 UTC

Note: most of these will be available to the shell and Rails' console too.

(Ruby) Haml 'nesting within a tag' error - cczona

Fri, 28 Mar 2008 11:28:26 UTC

"When using haml, an HTML tag is represented using %tagname, but in the case of an HTML tag with attributes, the representation is %tagname{:attribute => value}. It turns out there must be no whitespace between %tagname and {:attribute => value}. This was the source of a lot of errors when I was trying to write haml forms, since the error message was the cryptic: Illegal Nesting: Nesting within a tag that already has content is illegal."

(Ruby) order/format of params in method definition - cczona

Mon, 24 Mar 2008 22:41:16 UTC

See also p. 348 ("Invoking a Method") of Pickaxe 2nd edition

(Ruby) What version of Ruby and Rails is this using? - cczona

Mon, 24 Mar 2008 14:25:44 UTC

(Ruby) Ruby heredoc tricks - cczona

Fri, 14 Mar 2008 19:31:08 UTC

Following a

(Ruby) Use regex to match a Ruby substring, and reference it like an index - cczona

Thu, 13 Mar 2008 21:41:41 UTC

(Ruby) optimize Ruby memory usage by avoiding string accumulation - cczona

Thu, 13 Mar 2008 18:55:05 UTC

(Ruby) make Ruby strings behave like files - cczona

Thu, 13 Mar 2008 18:38:19 UTC

This is handy for testing, when you need to simulate an open file or open URI. Why, and the Pickaxe book, have better examples

(Ruby) Execute arbitrary code with different level of error messaging - cczona

Thu, 13 Mar 2008 03:27:01 UTC

You can turn off warnings for a section of your code by setting $VERBOSE to nil. Even better is to codify this in a method. Since this method takes a block as its parameter, you can now pass it arbitrary chunks of code to execute without warnings.

(Ruby) 'uninitialized constant Gem::GemRunner' - cczona

Thu, 13 Mar 2008 00:00:08 UTC

(Ruby) CGI library gotcha - cczona

Wed, 12 Mar 2008 23:58:07 UTC

Beware of requiring 'CGI'. There's trouble in them thar hills/