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module Validators
  # Provides fast image validation on the temp S3 bucket based on the file's metadata
  # It checks for Content Type and file size
  class S3TempImage < Grape::Validations::Base
    MAX_FILE_SIZE = 10 * 1024 * 1024 # 10 MB

    attr_reader :attr_name, :file_name, :file_metadata

    def validate_param!(attr_name, params)
      @attr_name = attr_name

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begin
  require "bundler/inline"
rescue LoadError => e
  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
  raise e
end

gemfile(true) do
  source "https://rubygems.org"
  # Activate the gem you are reporting the issue against.

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redis-cli KEYS "session:*" | xargs -n 100 redis-cli DEL

vbalazs

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called (Functional) Reactive Programming (FRP).

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

vbalazs

4.  Egy számlistában csúcsnak hívunk három szomszédos
    elemet, ha  az elsõ és a harmadik kisebb a másodiknál.

    Írjon olyan Prolog eljárást csucsa néven, amely balról jobbra haladva
    felsorolja egy számlistában levõ csúcsokat! A három szomszédos elemet
    egy cs/3 funktorú struktúraként adja vissza! Segédeljárást nem
    definiálhat.

    % csucsa(+L, -Cs): Cs egy cs/3 funktorú struktúra, amely az L számlistában
    % levõ csúcsot ír le.  L bemenõ, Cs kimenõ paraméter.