henriquejensen

{
    "UF": [
        {"nome": "Acre", "sigla": "AC"},
        {"nome": "Alagoas", "sigla": "AL"},
        {"nome": "Amapá", "sigla": "AP"},
        {"nome": "Amazonas", "sigla": "AM"},
        {"nome": "Bahia", "sigla": "BA"},
        {"nome": "Ceará", "sigla": "CE"},
        {"nome": "Distrito Federal", "sigla": "DF"},
        {"nome": "Espírito Santo", "sigla": "ES"},

akitaonrails

• Básico: Complexidade: (https://en.wikipedia.org/wiki/Time_complexity)
• How Quantum Computers Break Encryption | Shor's Algorithm Explained (https://www.youtube.com/watch?v=lvTqbM5Dq4Q)
• How to Make Sense of Google’s Quantum Supremacy Claim (https://www.extremetech.com/extreme/300987-googles-quantum-supremacy-paper-tldr-edition)
• The Extreme Physics Pushing Moore’s Law to the Next Level (https://www.youtube.com/watch?v=f0gMdGrVteI)
• Graphene Processors and Quantum Gates (https://www.youtube.com/watch?v=VLPpDoMBVK0)
• How Quantum Computers Break Encryption | Shor's Algorithm Explained (https://www.youtube.com/watch?v=lvTqbM5Dq4Q)
• How Shor's Algorithm Factors 314191 (https://www.youtube.com/watch?v=FRZQ-efABeQ)
• How Does a Quantum Computer Work? (https://www.youtube.com/watch?v=g_IaVepNDT4)
• What is Quantum Mechanical Spin? (https://www.youtube.com/watch?v=v1_-LsQLwkA)
• Secret Key Exchange (Diffie-Hellman) - Computerphile (https://www.youtube.com/watch?v=NmM9HA2MQGI)

protrolium

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

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