initializer

I'm trying to initialize the following union array at declaration: typedef union { __m128d m; float f[4]; } mat; mat m[2] = { {{30467.14153,5910.1427,15846.23837,7271.22705}, {30467.14153,5910.1427,15846.23837,7271.22705}}}; But I'getting the following error: matrix.c: In function ‘main’: matrix.c:21: error: incompatible types in initialization matrix.c:21: warning: excess elements in union initializer matrix.c:21: warning: (near initialization for ‘m[0]’) matrix.c:21: warning: excess elements in union initializer matrix.c:21: warning: (near initialization for ‘m[0]’) matrix.c:21: warning:

I'm attempting to integrate a twitter feed into my Rails 4 application using this gem . I've read the documentation on the github page but I'm running into a problem when trying to use a method in my view. I have the following in an initializer file named twitter_init.rb (with my auth info): client = Twitter::Streaming::Client.new do |config| config.consumer_key = "YOUR_CONSUMER_KEY" config.consumer_secret = "YOUR_CONSUMER_SECRET" config.access_token = "YOUR_ACCESS_TOKEN" config.access_token_secret = "YOUR_ACCESS_SECRET" end When trying to use the following code in my view I receive the error

I'm using Sorcery for Authentication, and I need to setup third party authentication in its initializer. The initializer has a line that looks like this: config.twitter.callback_url "http://example.dev/auth/callback?provider=twitter" ...where example.dev is the hostname when I'm using Pow in local development. This needs to be example.com if the app is in production, or staging.example.com if it's in staging, etc. I would like to set this line to be something like this: config.twitter.callback_url "#{Rails.hostname}/auth/callback?provider=twitter" ... but request.host is the only method I know

It's time to make it shorter: class Foo attr_accessor :a, :b, :c, :d, :e def initialize(a, b, c, d, e) @a = a @b = b @c = c @d = d @e = e end end We have 'attr_accessor' to generate getters and setters. Do we have anything to generate initializers by attributes? Easiest: Foo = Struct.new( :a, :b, :c ) Generates both accessors and initializer. You can further customize your class with: Foo = Struct.new( … ) do def some_method … end end We can create something like def_initializer like this: # Create a new Module-level method "def_initializer" class Module def def_initializer(*args) self.class

It is very surprising that Rails's initializers run while running any rake task, including db:migrate and db:seed . An initializer in my app starts a background thread (a kind of worker process), and it should be executed only when the application is running in debug and production mode. How to prevent a specific initializer from running when doing rake db:migrate or how to detect in initializer that a rake task is running? Here is a solution how to prevent an initializer from running in Rake task: unless ( File.basename($0) == 'rake') # Initializer code end Alessandro Gurgel If your

I have problem understanding the order in which initialization happens. this is the order I assumed: *Once per 1. Static variable declaration 2. Static block *Once per object 3. variable declaration 4. initialization block 5. constructor but according to this code I am obviously wrong: class SomethingWrongWithMe { { b=0; //no. no error here. int a = b; //Error: Cannot reference a field before it is defined. } int b = 0; } And the error would disappear if I do this: class SomethingWrongWithMe { int b = 0; { b=0; int a = b; //The error is gone. } } I can't figure out why isn't there an error on