Re-namespacing a bit to clear out some fairly old stuff from the top level

oldstuff/RubyFun/cookbook/007/01.rb

@@ -0,0 +1,28 @@
+# WRONG
+# aBlock = { |x| puts x }
+
+# RIGHT
+aBlock = lambda { |x| puts x }
+
+aBlock.call "Hello World!"
+
+
+def my_lambda(&aBlock)
+  aBlock
+end
+
+b = my_lambda { puts "Hello World My Way!" }
+b.call
+
+aBlock = Proc.new { |x| puts x }
+aBlock = proc { |x| puts x }
+aBlock = lambda { |x| puts x }
+
+add_lambda = lambda { |x,y| x + y }
+# add_lambda.call(4)
+# add_lambda.call(4,5,6)
+puts add_lambda.call(4,2)
+
+add_procnew = Proc.new { |x,y| x + y }
+# add_procnew.call(4)
+puts add_procnew.call(4,5,6)

oldstuff/RubyFun/cookbook/007/02.rb

@@ -0,0 +1,30 @@
+require 'pp'
+
+def call_twice
+  puts "Calling your block."
+  ret1 = yield("very first")
+  puts "The value of your block: #{ret1}"
+
+  puts "Calling your block again."
+  ret2 = yield("second")
+  puts "The value of your block: #{ret2}"
+end
+
+call_twice do |which_time|
+  puts "I'm a code block, called for the #{which_time} time."
+  which_time == "very first" ? 1 : 2
+end
+
+
+class Hash
+  def find_all
+    new_hash = Hash.new
+    each { |k,v| new_hash[k] = v if yield(k, v) }
+    new_hash
+  end
+end
+
+squares = {0=>0, 1=>1, 2=>4, 3=>9}
+print "squares = "
+pp squares
+(squares.find_all { |key, value| key > 1 }).each { |k,v| puts "#{k}: #{v}" }

oldstuff/RubyFun/cookbook/007/intro.rb

@@ -0,0 +1,39 @@
+[1, 2, 3].each { |i| puts i }
+
+[1, 2, 3].each do |i|
+  if i % 2 == 0
+    puts "#{i} is even."
+  else
+    puts "#{i} is odd."
+  end
+end
+
+1.upto 3 do |x|
+  puts x
+end
+
+1.upto(3) { |x| puts x }
+
+hello = lambda { "Hello" }
+hello.call
+
+log = lambda { |str| puts "[LOG] #{str}" }
+log.call("A test log message.")
+
+{1=>2, 2=>4}.each { |k,v| puts "Key #{k}, value #{v}" }
+
+def times_n(n)
+  lambda { |x| x * n }
+end
+
+times_ten = times_n(10)
+puts times_ten.call(5)
+puts times_ten.call(1.25)
+
+circumference = times_n(2*Math::PI)
+puts circumference.call(10)
+puts circumference.call(3)
+puts [1, 2, 3].collect(&circumference)
+
+ceiling = 50
+puts [1, 10, 49, 50.1, 200].select { |x| x < ceiling }