serhii.net

Quotes / HN

I think part of the problem is people being raised to believe that love, in the biochemical sense, is the most important part of a relationship. Hence when they start feeling similar feelings for others, their relationship can weaken. But a relationship can be about so much more than just the biochemical side: two people, with similar goals and values, working together to build a better life for themselves and their children, and to help each-other achieve their dreams. ¹

Random / Interesting

Zersetzung - Wikipedia “(German for “decomposition”) is a psychological warfare technique used by the Ministry for State Security (Stasi) to repress political opponents in East Germany during the 1970s and 1980s.”

Home wifi/ethernet speed comparison

TL;DR Download speed with ethernet is 4x faster, no differences otherwise.

Sa 17 Okt 2020 17:15:44 CEST.

Wifi, 50cm from router:

$ speedtest-cli

Retrieving speedtest.net configuration...
Testing from [redacted]
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by [redacted]: 46.246 ms
Testing download speed................................................................................
Download: 101.10 Mbit/s
Testing upload speed......................................................................................................
Upload: 3.64 Mbit/s

Ethernet from same router:

$ speedtest-cli

Retrieving speedtest.net configuration...
Testing from [redacted]
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by [redacted]: 40.086 ms
Testing download speed................................................................................
Download: 395.90 Mbit/s
Testing upload speed......................................................................................................
Upload: 3.89 Mbit/s

Added zsh alias for copying current dir

alias ccd='pwd | xc'; though I kinda feel the task would be solved nicely as keyboard shortcut for kitty. + Reminder to myself that zsh nicely cd-s to it when pasting the folder, without cd.

Also find | grep is now f instead of ff.

German

“Du spricht für uns alle”

English / interesting

• steeplechase - Wiktionary - без с препятствиями (people or horses);
• hurdling = бег с препятствиями.

grep for looking for tests in different files

Forgetting about this nice use of grep:

grep "whatever" * gives the matches while also displaying the filename!

Intellij Idea Ideavim actionlist

And yet another place to find this! :actionlist as command in ideavim.

Ideavim jump to place of last edit

IdeaVIM Help: motion is the last readable docu I can find, from 2006.

gi starts insert mode at the last place insert mode was exited; '^ just moves the cursor there.

Intellij Idea tests not running

Had an issue with “Class not found” when running tests, fixed with “Invalidate caches and restart”

Intellij up/down keys

My custom up/down keys set via xmodmap (<Super-C> etc.) got recognized everywhere in the OS except intellij; Can get configured in intellij keymap.

Intellij idea toolbars

“View -> Appearance -> Tool window bars” gives extremely useful tool window bars that include a number, the one I can use in <Alt-N> bindings to make them appear! Same goes for the …tabs to the right with Structure etc.

Intellij building complex stuff and running maven goals

Once N maven goals or whatever are run and N tabs opened, they can be found again in the “Run” tool window bar (<Alt-4>). Particular tabs can be also successfully restarted.

maven skip checkstyle

mvn [target] -Dcheckstyle.skip does the magic without editing any POMs etc. ¹

Java Comparators

• Not bound to -1, 0, +1, any positive/negative number works.

Random / interesting

Nightcore - Wikipedia - A nightcore edit is a cover track that speeds up the pitch and time of its source material by 10–30%.

German

in trockenen Tüchern - “cut and dried” = “final”. See in trockenen Tüchern - Wiktionary

Java profiling with visualVM

• Startup Profiler is a plugin for VisualVM, VisualVM: Startup Profiler is a tutorial.

scp can do autocompletion!

Nothing to add, but I think it works if you have access via public key instead of passwords. scp what-ever:/home/whatever/..<TAB> works nicely with zsh even visualizing it like usual.

Also TODO rsync apparently can do the same things as scp, but better, I should give it a chance.

Pandas / matplotlib

It’s possible use panda’s graphs as an ax and do all other modifications to it!

ax = data.plot(y=['tp','fn'], kind='bar',stacked='true')

jupyter / mpl / google docs

You can drag and drop graphs directly from jupyter into a google docs presentation

grep / uniq magic

uniq can compare stuff before / after N characters in the string, group together duplicate ones, etc!

• uniq -w N looks at only the N first characters.
• uniq -s N don’tt look at the first N characters
• uniq --all-repeated[=METHOD] prints all duplicated lines and optionally separates them via METHOD. separate is really nice as method.
• uniq -c prefixes line by number of occurrences of that line

And I guess again - uniq works only on sorted data.

Slack formatting

Format your messages | Slack:

• ~strikethrough~, *bold*, _italic_.
• > quoting is as usual.
• Highlight text and paste a link -> create a link.

Slack search

in:#team-marketing 
in:@sara

to:@anna

before:4/12/2019
after:4/12/2019
on:4/12/2019
during:april

has::white_check_mark:

has:pin
is:saved
has:link

vim folding by tab works again now!

Had to remove this snipped from vimrc:

augroup remember_folds
  autocmd!
  autocmd BufWinLeave *.* mkview
  autocmd BufWinEnter *.* loadview
augroup END

vim folding

Will now try to use almost exclusively folding by tabs. For this, these are going to be helpful: ¹

zo		Open one fold under the cursor.  
zc		Close one fold under the cursor.  

zO		Open all folds under the cursor recursively.  
zC		Close all folds under the cursor recursively.  

za		When on a closed fold: open it.  
		When on an open fold: close it 
zA		When on a closed fold: open it recursively.
		When on an open fold: close it recursively 

zv		View cursor line: Open just enough folds to make the line in
		which the cursor is located not folded.

zX		Undo manually opened and closed folds: re-apply 'foldlevel'.
		Also forces recomputing folds, like |zx|.


zm		Fold more: Subtract one from 'foldlevel'.  
zM		Close all folds: set 'foldlevel' to 0.


zr		Reduce folding: Add one to 'foldlevel'.
zR		Open all folds.  This sets 'foldlevel' to highest fold level.


zn		Fold none: reset 'foldenable'.  All folds will be open.
zN		Fold normal: set 'foldenable'.  All folds will be as they
		were before.
zi		Invert 'foldenable'.


MOVING OVER FOLDS 

[z		Move to the start of the current open fold.  
]z		Move to the end of the current open fold.  
zj		Move downwards to the start of the next fold. 
zk		Move upwards to the end of the previous fold.  

TODO and XXX conventions

coding style - Where does the TODO convention come from? - Stack Overflow - XXX as marker for something dangerous. Fixme Comment in c2 wiki for more.

TODO vim highlighting

Very ugly but it works:

fun! SetTodo()
    syn match modo /.*MODO.*$/
    hi link modo Keyword
    syn match nodo /.*NODO.*$/
    hi link nodo javaScript
    syn match todo /\s*TODO.*$/
    hi link todo vbTodo
    syn match done /\s*DONE.*$/
    hi link done cssListProp
    syn match xxx /\s*XXX.*$/
    hi link xxx htmlError
endfu
autocmd filetype markdown :call SetTodo()

How to prettyfy json using jq

jq . inputfile.json gives a nice pretty colored indented output.

Wolfram alpha “time between”

https://www.wolframalpha.com/input/?i=time+between+2020-10-02+16%3A55%3A01+and+2020-10-03+20%3A00%3A29

Works also in this shorter format: https://www.wolframalpha.com/input/?i=time+between+2020-10-06+11%3A22%3A50+2020-10-06+14%3A53%3A49 (time between $date1 $date2)

screen attaching non-existing named screens creates them

If I do screen -R 20, and there’s no screen named ‘20’, such a screen will be created and attached. Neat.

killing all screens

Quitting all screens from inside screens is the screen command C-a \ ¹