arsane

def dump_speed_matrix():
    Fi   = [  372, 372, 558, 744, 1116, 1488, 1860, "RFU", "RFU", 512,   768,  1024,  1536,  2048, "RFU", "RFU"]
    FMax = [    4,   5,   6,   8,   12,   16,   20, "RFU", "RFU",   5,   7.5,    10,    15,    20, "RFU", "RFU"]
    Di   = ["RFU",   1,   2,   4,    8,   16,   32,    64,    12,  20, "RFU", "RFU", "RFU", "RFU", "RFU", "RFU"]
    
    for fi in [0, 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13]:
        for di in [1, 2, 3, 4, 5, 6, 7, 8, 9]:
            v = Fi[fi] / Di[di]
            text = "Fi=%2s(%4d), Di=%2s(%2d), %4g cycles/ETU (%7d bits/s at 3.57 MHz, %7d bits/s for fMax=%4.1f MHz)"
            args = (fi, Fi[fi], di, Di[di], v, 3570000 / v, FMax[fi] * 1000000 / v, FMax[fi])

arsane

# lambda recusion.
puts ->() {
  error = ->(n) {throw "SHOULD NEVER BE CALLED"}
  
  ->(g) {
    g.(g)
  }.(
    ->(f) {
      ->(n) {n.zero? ? 1 : n * f.(f).(n-1)}
    }

arsane

Optional = Struct.new(:value) do
  def and_then(&block)
    if value.nil?
      Optional.new(nil)
    else
      block.call(value)
    end
  end

  def method_missing(*args, &block)

arsane

Remove old container not used over 1 month.

docker ps --filter "status=exited" | grep 'months ago' | awk '{print $1}' \
| xargs --no-run-if-empty docker rm

Copy file between docker and host

arsane

Contacts

• Id
• Name
• Email
• Personal HP
• Office Hp
• Company
• Address

arsane

• List resources filter with specified pattern

gcloud alpha resources list --filter='utopian-theater-20112'