srghma

Keybase proof

I hereby claim:

• I am srghma on github.
• I am srghma (https://keybase.io/srghma) on keybase.
• I have a public key ASD1MDtsbC5cqzbn5RevzNhsStSznnYts4jteE43idPIAwo

To claim this, I am signing this object:

srghma

как выучить английский

1. anki - https://play.google.com/store/apps/details?id=com.ichi2.anki&hl=en
2. abbyy - https://4pda.ru/forum/index.php?showtopic=274036
3. https://habr.com/ru/post/103936/
4. https://habr.com/ru/post/367833/
5. мой скрипт (если сможешь поставить 😄) https://github.com/srghma/lingualeo2anki/blob/master/README.md

как выучить linux

1. попробуй ubuntu

srghma

fix function - https://github.com/NixOS/nixpkgs/blob/9f087964709174424bca681b600af8ee8e763df5/lib/fixed-points.nix#L19 , https://en.m.wikipedia.org/wiki/Fixed_point_(mathematics) , point where x = f(x) = f(f(f(f....f(x)....)))

rec { a = 1; b = a + 1; } is the same as fix (self: { a = 1; b = self.a + 1; })

builtins.trace - https://github.com/NixOS/nixpkgs/blob/9f087964709174424bca681b600af8ee8e763df5/lib/debug.nix#L4 trace has different flavors, http://hackage.haskell.org/package/base-4.12.0.0/docs/Debug-Trace.html#v:trace all lazy languages have trace

builtins.seq - in lazy languages data is represented as thunks (IF data has not been yet evaluated THEN it's pointer on function that should produce this data ELSE it's pointer on data), builtins.seq forces first layer of data to evaluate (evaluates it to WHNF?), builtins.deepSeq is recursive variant of seq, it forces whole data to evaluate (evaluates it to NF?), (more https://wiki.haskell.org/Seq, https://www.google.com/amp/s/amp.reddit.

srghma

Functions found http://blog.shealevy.com/2018/08/05/understanding-nix's-string-context/

builtins.scopedImport

• documentation - https://github.com/NixOS/nix/commit/c273c15cb13bb86420dda1e5341a4e19517532b5

builtins.importNative:

• needs allow-unsafe-native-code-during-evaluation
• can be used to decrypt secrets
• documentation - https://github.com/NixOS/nix/commit/5cd022d6c099c583c0494bdacd06f4eb32661135

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

  $(".chosen-select-with-add-new").chosen({
    no_results_text: "Click Enter or Tab to add new option",
    width: '100%'
  }).parent().find('.chosen-container .search-field input[type=text]').keydown(function (evt) {
    // get keycode
    const stroke = evt.which != null ? evt.which : evt.keyCode;
    // If enter or tab key
    if (stroke === 9 || stroke === 13) {
      const target = $(evt.target);
      // get the list of current options

srghma

Rails, bad configuration

We thought it was memory leak, but it was bad configuration

configuration that didnt work before:

1. puma (RAILS_MAX_THREADS: 8, WEB_CONCURRENCY: 8)
2. db pool - 10
3. memory cache

srghma

make_dhparam:
	openssl dhparam -out backend/dhparams.pem 2048

nixops_create:
	nixops create '<base.nix>'

nixops_purge:
	nixops destroy --all
	nixops delete --all

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

srghma

#!bin/sh

# Update installed packages and package cache
sudo yum update -y

# make sure in the home folder
cd ~/

# Golang installation