tlack

// Matraka's source code decoded and beautified
// by @tlack
//
// Matraka is a 1005 byte Javascript "demo" by p01. It includes an 'evolving animation'
// and great dirty synth music. View here:
// 
// http://www.p01.org/releases/MATRAKA/matraka.png.html
//
// I fondly recall the demo scene of my youth, puzzling over the work of Future
// Creators and those guys. I was puzzled by this worked so I had to figure it

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

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

appakz

#Quick and dirty PS script for counting lines of code in a directory. Output is dumped to a simple CSV file.
#Note that this script doesn't count blank lines.
#Parameters:
#  path - the path containing the code files (note that the script will recurse through subfolders
#  outputFile - fully qualified path of the file to dump the CSV output
#  include (Optional) - file mask(s) to include in the count (deafults to *.*)
#  exclude (Optional) - file mask(s) to exclude in the count (defaults to none)
#  Example (count lines in target path including *.cs but excluding *.designer.cs)
#  .\countLOC.ps1 -path "C:\code\MyProject" -outputFile "C:\code\loc.csv" -include "*.cs" -exclude "*.designer.cs"
param([string]$path, [string]$outputFile, [string]$include = "*.*", [string]$exclude = "")

mmichaelis

# exclude patterns (uncomment them if you want to use them):
# *.[oa]
# *~
# idea:
*.iml
*.ipr
*.iws
.idea/
# maven:
target/