Telegram-канал "TIL by Timur" — @timur

TIL by Timur

23 Oct 2018, 19:02

It is possible to save macros in vim. Add let @q = 'macro contents’ to your ~/.vimrc. Then in next vim session you can just call your presaved macro.

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TIL by Timur

16 May 2018, 17:53

Bundles maybe useful if you need to transfer a git project to someone, but the project isn’t connected to a bare repository.

14.8k 0 0

TIL by Timur

16 May 2018, 17:50

It is possible to create a git archive with git bundle create file.bundle master, transfer it to another machine and clone a new repository from it with git clone -b master file.bundle.

14.7k 0 0

TIL by Timur

8 May 2018, 18:11

In #ruby you can split enumerable on two arrays by the result of a block evaluation: (1..6).partition { |v| v.even? } #=> [[2, 4, 6], [1, 3, 5]]

13.7k 0 0

TIL by Timur

16 Feb 2018, 16:24

https://hub.github.com an awesome tool for working with github from a command line.

11.7k 0 0

TIL by Timur

10 Feb 2018, 13:57

#curl can decompress gzipped response with --compressed flag.

9.9k 0 0

TIL by Timur

6 Feb 2018, 00:13

#elasticsearch can run in-memory cluster for testing purposes.

9.3k 0 0

TIL by Timur

6 Feb 2018, 00:11

https://medium.com/@rowanoulton/testing-elasticsearch-in-rails-22a3296d989

Testing Elasticsearch in Rails

This year I began to work on a few projects in Rails. Besides feeling ten years late to the party, I found it was a smooth transition…

9k 0 0

TIL by Timur

3 Feb 2018, 14:49

#vim has insert normal mode that let you execute a single command and then it brings you back to insert mode. Press ^o (ctrl-o) during insert mode in order to switch to insert normal mode.

7.9k 0 0

TIL by Timur

2 Feb 2018, 17:40

#vim allows to disable search highlighting until next search with :noh.

7.3k 0 0

http://dejimata.com/2017/5/20/the-ruby-module-builder-pattern

This interesting pattern demonstrates the real power of metaprogramming in #ruby. The implementation is so neat and tricky. Since ruby allows to generate anonymous modules dynamically with Module.new, a class, that is inherited from a Module, will generate an anonymous module on initialization. So it is possible to include an object of this class in another class, because object will be the module itself. Mind blown.

The Ruby Module Builder Pattern

Tokyo-based developer chronicling life in words and code.

7.1k 0 0

TIL by Timur

31 Jan 2018, 13:50

6.1k 0 0

TIL by Timur

31 Jan 2018, 13:50

Actually I din't learn this today, but I want to continue on REPL in #ruby topic. Today feature is really useful, but little-known.
Working with interpreter frequently leads you to situations where you don't assign a latest result of evaluation to a variable, but then you realise that you definitely need it. Instead of pressing up arrow or ^P and repeating last command with assignment you can just type _ and work with it. The result of latest evaluation is automatically stored in _ temporary variable.

5.8k 0 0

TIL by Timur

30 Jan 2018, 14:27

5.3k 0 0

TIL by Timur

30 Jan 2018, 14:12

REPL in #ruby always returns a result of evaluation. In some cases you don't want to see the result, you just need it for further operations. Long output takes time to render, for example if you need to instantiate lots of objects from a database. Hovewer the interpreter can be tricked by combining your operation with return nil like this: contents = Content.in(id: ids).to_a; nil.

5.1k 0 0

TIL by Timur

29 Jan 2018, 16:41

Finding characters in a line with f, F, t, T in #vim can be repeated with ; for a next and , for a previous occurrence.

4.7k 0 0

TIL by Timur

29 Jan 2018, 15:16

REPL in #ruby allows to change binding context to objects. It works for pry and irb, just use irb method instead of pry.

4.6k 0 0

TIL by Timur

29 Jan 2018, 14:53

hello world

4.2k 0 0

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