and class variables are explained in Chapter 7. ? As a helpful convention, methods that return Boolean values often have names that end with a question mark. ! Method names may end with an exclamation point to indicate that they should be used cautiously. This naming convention is often to ...
To limit sharing of objects, Ractor introduces several restrictions to the Ruby’s syntax (without multiple Ractors, there is no restriction). The specification and implementation are not matured and may be changed in the future, so this feature is marked as experimental and show the “experiment...
To limit sharing of objects, Ractor introduces several restrictions to the Ruby’s syntax (without multiple Ractors, there is no restriction). The specification and implementation are not matured and may be changed in the future, so this feature is marked as experimental and show the “experiment...
# bad def compute_thing(thing) if thing[:foo] update_with_bar(thing[:foo]) if thing[:foo][:bar] partial_compute(thing) else re_compute(thing) end end end # good def compute_thing(thing) return unless thing[:foo] update_with_bar(thing[:foo]) return re_compute(thing) unless thing[...
If the method doesn't return a value (or we don't care about the return), parentheses are optional. (Especially if the arguments overflow to multiple lines, parentheses may add readability.) [link] # okay render(:partial => 'foo') # okay render :partial => 'foo'In...
Multiple return values Output parameters Caller-supplied fallback strategy Global variables Process reification Beyond exceptions Your failure handling strategy Exceptions shouldn’t be expected A rule of thumb for raising Use throw for expected cases What constitutes an exceptional case? Caller-supplied ...
local variables, method name should start with lowercase letter. class names, module names, and constants must start with uppercase letter. method name end with ? : method return a boolean. method name end with ! : method do something danger. ...
They now return an array of symbols (instead of strings): a = "" class << a; def foo; end end a.singleton_methods # => [:foo] Class and Module Module#instance_methods, #private_instance_methods, #public_instance_methods They now return an array of symbols (instead of strings): ...
There's a simple snippet of Ruby code: def shutter_clicked if @camera.off? || @camera.memory_card_full? return end capture_image end Ruby folks have their own aesthetic and sense of beauty. They would say that the Programmer's Intent is better expressed like this: ...
Ruby library to grab given IO output and return it as a string ruby-capybara (3.40.0+ds-2) [universe] integration testing tool for Rack based web applications ruby-carrierwave (3.0.7-1) [universe] Ruby file upload library ruby-case-transform (0.2-1.1) [universe] Transform values to differ...