Madmin- A robust Admin Interface for Ruby on Rails apps MotorAdmin- A low-code Admin panel and Business Intelligence Rails engine. No DSL - configurable from the UI. RailsAdmin- A Rails engine that provides an easy-to-use interface for managing your data. Trestle- A modern, responsive admi...
21 $: The array contains the list of places to look for Ruby scripts and binary modules by load or require. It initially consists of the arguments to any -I command line switches, followed by the default Ruby library, probabl "/usr/local/lib/ruby", followed by ".", to represent the...
Avoid long chains of&.. The longer the chain is, the harder it becomes to track what on it could be returning anil. Replace with.and an explicit check. E.g. if users are guaranteed to have an address and addresses are guaranteed to have a zip code: # baduser&.address&.zip&.upcase...
both array and hash grow as needed. both array and hash can hold objects of diff types. part 7: array you can create and initialize a new array using [] you can also use Array.new method which may support more options. lots and lots of built-in methods such as: reverse, reverse!.....
Ruby extensions for Array and String classes ruby-inflecto (0.0.2-1.1) [universe] Ruby library to transform words from singular to plural ruby-influxdb (0.8.1-2) [universe] library for InfluxDB ruby-inherited-resources (1.13.0-1) [universe] Speeds up development by making controllers inherit...
An array contains quite a few features that aren’t needed in this case. All we’re trying to do is to keep track of the specs that have been traversed. Aaron submitted a relatively popular patch to help with this problem: If I’m right (and I think I am), this will drop millions...
Using numbers would more clearly illustrate that the values aren’t changed in the original array: > numbers = [1, 2, 3, 4, 5] => [1, 2, 3, 4, 5] > numbers.each do |x| … x = x + 2 … puts x … end 3 4 5
"insert into jobs values ( #{ tuple.join ',' } )" or primary_key, rest = tuple And with an array representation, you end up with indecipherable code, such as this: field = tuple[7] Now, what was field 7 again? When I first started using the SQLite bindings for Ruby, all of th...
An array is a data structure that contains a list of values called elements. Arrays can be an ordered, integer-indexed collection of any object. Ruby arrays can have objects such as Integer, String, Symbol, Fixnum, and Hash, or even other arrays, as elements. In many languages, arrays ...
Get the size of an array: numbers.size # 5 Check if an array is empty: numbers.empty? # false Removenilvalues: numbers << nil # [1, 3, 3, 5, 5, nil] numbers.compact # [1, 3, 3, 5, 5] Operations With Multiple Arrays ...