srghma

This is an example of using elfinder with bcrypt tokens.

It works like this:

• backend and elfinder knows about secret token
• user can access elfinder on localhost:8000/elFinder/elfinder.html, but cant write without token
• backend adds hashed token to url only on some pages (admin panel for example)
• tinymce opens elfinder.html in iframe with hashed token, elfinder.html iframe pass this token to connector, connector validates token
• I use nginx to bypass cors issue

Sorry can provide more elaborate exmaple (proprietary software)

srghma

(function(console){
console.save = function(data, filename){
    if(!data) {
        console.error('Console.save: No data')
        return;
    }
    if(!filename) filename = 'console.json'
    if(typeof data === "object"){
        data = JSON.stringify(data, undefined, 4)
    }

srghma

pkgs.package.override - res of lib.makeOverridable (used by callPackage),

overrides arguments of callPackage

https://nixos.org/nixos/nix-pills/override-design-pattern.html

pkgs.foo.override { arg1 = val1; arg2 = val2; ... }

srghma

FFT

https://www.youtube.com/watch?v=spUNpyF58BY - Fourier Transform

You should find what is a freq of a signal (e.g. you should find that it's 3b/s)

you are given signal portion 4.5 s

you can wrap that 4.5 around a circle where 
- 1 rotation per 6 seconds = 1/6 rotations per second

srghma

Dex'es (dec exchanges): (https://fsr-develop.ru/katalog-decentralizovannyh-birzh-dex#rec285539316)

• Uniswap

  automated

  Ключевые функции Uniswap – Swap и Pool.

  Swap позволяет торговать ETH и ERC-20 (Ethereum Request for Comments) токенами.

srghma

stage_ssh () {
  ssh \
    root@${stage_ip} \
    -i ${toString ../secrets/stage_root_key} \
    $@
}

state_nixos_rebuild () {
  NIX_SSHOPTS="-i ${toString ../secrets/stage_root_key}" \
    nixos-rebuild \

srghma

2. Стек - особая область памяти, в которой переменные не получают абсолютных адресов, чтобы отградиться от рекурсивных процедур

srghma

(1) request: the client sends a request to the master node.

(2) pre-prepared: The master node receives the request from the client and needs to verify whether the signature of the client request message is correct. If correct, a pre-prepare message is broadcast to other replica nodes.

(3) prepared: the replica node receives the pre-prepare message from the master node and carries out verification. If correct, the replica node sends a prepare message to other nodes, including the primary.

srghma

original

data DoorState = Open | Closed

data Door : DoorState -> Type where
     MkDoor : (doorId : Int) -> Door st

openDoor : (1 d : Door Closed) -> Door Open

srghma

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
sudo apt-get update
apt-cache policy docker-ce
sudo apt-get install -y docker-ce
sudo curl -o /usr/local/bin/docker-compose -L "https://github.com/docker/compose/releases/download/1.21.2/docker-compose-$(uname -s)-$(uname -m)"
sudo chmod +x /usr/local/bin/docker-compose

sudo usermod -a -G docker $USER
# reenter ssh