Ioannis Gakos iogakos

iogakos / toggle_case.c

Last active November 29, 2015 02:09

	/*
	* Toggles character case
	*
	* e.g in: 'b' -> out: 'B'
	* in: 'B' -> out: 'b'
	* in: '5' -> out: '5'
	*
	* @param c ascii character to be toggled
	* @return toggled ascii character if alphabetical,
	* otherwise intact value of c

iogakos / out

Created July 4, 2013 14:30

	# ENV
	# RUBY_HEAP_MIN_SLOTS=1000000
	# RUBY_HEAP_SLOTS_INCREMENT=1000000
	# RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
	# RUBY_GC_MALLOC_LIMIT=1000000000
	# RUBY_HEAP_FREE_MIN=1000000

	# str_gsub() using its regular form (regex, replacement)
	[:before_string_build, 0]
	[:after_string_build, 26420]

iogakos / gsub_wo_block.rb

Created July 4, 2013 14:24

	GC::Profiler.enable

	vm_before = File.read("/proc/#{$$}/status").match(/^VmSize:\s(\d)/)[1].to_i

	def vm_used(vm_before)
	File.read("/proc/#{$$}/status").match(/^VmSize:\s(\d)/)[1].to_i - vm_before
	end

	# w/o block
	def gsub_wo(s)

iogakos / gsub_w_block.rb

Created July 4, 2013 14:24

	GC::Profiler.enable

	vm_before = File.read("/proc/#{$$}/status").match(/^VmSize:\s(\d)/)[1].to_i

	def vm_used(vm_before)
	File.read("/proc/#{$$}/status").match(/^VmSize:\s(\d)/)[1].to_i - vm_before
	end

	# w block
	def gsub_w(s)

iogakos / ruby_gc_goes_wild.rb

Last active December 19, 2015 08:39

Strange behavior of Ruby's GC. ## Careful !! The following script requires ~40Mb of your virtual memory address space.

	## Careful !!
	# The following script requires ~40Mb of your virtual memory address space.

	vm_before = File.read("/proc/#{$$}/status").match(/^VmSize:\s(\d)/)[1].to_i

	def vm_used(vm_before)
	File.read("/proc/#{$$}/status").match(/^VmSize:\s(\d)/)[1].to_i - vm_before
	end

	# w block

iogakos / wma_hash.rb

Created November 22, 2012 09:40

Weighted Moving Average - Ruby Implementation

	# Weighted Moving Average (WMA)
	# http://en.wikipedia.org/wiki/Moving_average#Weighted_moving_average
	#
	# Given a hash, calculates the weighted moving averages of its values within
	# a window size given. Modifies the original hash values.
	#
	# @param hash [Hash] the hash for whom values calculate the weighted moving
	# averages.
	# @param maws [Fixnum] the Moving Average Window Size. The greatest this
	# number is the smoothest the calculated averages will be.

iogakos / radio.sh

Created September 19, 2012 10:11

Fav radio station load script using VLC

iogakos / gist:1700648

Created January 29, 2012 21:06

The AC-3 algorithm, the ruby way

	def calculate_worklist(bishops)
	worklist = Array.new
	bishops.each { \|b\|
	worklist.unshift("#{b[0]}") && next if b[1] != [nil, nil]
	worklist << b[0]
	}
	worklist.combination(2).to_a
	end

	def pick_position(positions)

iogakos / gist:1570713

Created January 6, 2012 13:53