jodosha

class Hash
  def deep_has_key?(key)
    self.has_key?(key) || any? {|k, v| v.deep_has_key?(key) if v.is_a? Hash}
  end
  alias :deep_include? :deep_has_key?
  alias :deep_key? :deep_has_key?
  alias :deep_member? :deep_has_key?
  
  def deep_has_value?(value)
    self.has_value?(value) || any? {|k,v| v.deep_has_value?(value) if v.is_a? Hash}

paulcuth

function instanceOf (subject, super)

	super = tostring(super)
	local mt = getmetatable(subject)

	while true do
		if mt == nil then return false end
		if tostring(mt) == super then return true end

		mt = getmetatable(mt)

chitchcock

Stevey's Google Platforms Rant

I was at Amazon for about six and a half years, and now I've been at Google for that long. One thing that struck me immediately about the two companies -- an impression that has been reinforced almost daily -- is that Amazon does everything wrong, and Google does everything right. Sure, it's a sweeping generalization, but a surprisingly accurate one. It's pretty crazy. There are probably a hundred or even two hundred different ways you can compare the two companies, and Google is superior in all but three of them, if I recall correctly. I actually did a spreadsheet at one point but Legal wouldn't let me show it to anyone, even though recruiting loved it.

I mean, just to give you a very brief taste: Amazon's recruiting process is fundamentally flawed by having teams hire for themselves, so their hiring bar is incredibly inconsistent across teams, despite various efforts they've made to level it out. And their operations are a mess; they don't real

niwo

# starts all unicorns listed in /etc/unicorn/*.conf
# lives under /etc/unicorn/rpcm.conf

ENV=production
APP_ROOT=/opt/rpcm

riyad

# The BootstrapBreadcrumbsBuilder is a Bootstrap compatible breadcrumb builder.
# It provides basic functionalities to render a breadcrumb navigation according to Bootstrap's conventions.
#
# BootstrapBreadcrumbsBuilder accepts a limited set of options:
# * separator: what should be displayed as a separator between elements
#
# You can use it with the :builder option on render_breadcrumbs:
#     <%= render_breadcrumbs :builder => ::BootstrapBreadcrumbsBuilder, :separator => "&raquo;" %>
#
# Note: You may need to adjust the autoload_paths in your config/application.rb file for rails to load this class:

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

mmassaki

puts "Start typing away."
while (line = STDIN.readline).strip != ""
  puts eval(line)
end

lgfa29

} else {
	int myByte;
	if (nbrBitsFilled == 0)
		myByte = 0;
	else
		myByte = Integer.parseInt(myString.substring(nrBytesFilled*2, nrBytesFilled*2 + 2), 16);
		
	String myByteString = Integer.toBinaryString(myByte);
	myByteString = repeatString("0", nbrBitsFilled-myByteString.length()) + myByteString;
	myByteString = reverseString(myByteString);

return1

#
# UPDATE for 10.10.4+: please consider this patch obsolete, as apple provides a tool called "trimforce" to enable trim support for 3rd party SSDs
# just run "sudo trimforce enable" to activate the trim support from now on!
#
# Original version by Grant Parnell is offline (http://digitaldj.net/2011/07/21/trim-enabler-for-lion/)
# Update July 2014: no longer offline, see https://digitaldj.net/blog/2011/11/17/trim-enabler-for-os-x-lion-mountain-lion-mavericks/
#
# Looks for "Apple" string in HD kext, changes it to a wildcard match for anything
#
# Alternative to http://www.groths.org/trim-enabler-3-0-released/

KartikTalwar

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

• a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
• H: preserves hard-links
• A: preserves ACLs