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Volodymyr Stelmashchuk VovaStelmashchuk

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@VovaStelmashchuk
VovaStelmashchuk / main.py
Last active October 31, 2025 17:17
ESP32 electricty tracker micro python
from machine import Pin
import time
import network
import time
import ujson as json
import usocket as socket
import machine
import urequests
led = Pin(8, Pin.OUT)
@VovaStelmashchuk
VovaStelmashchuk / class-cast-exception.kt
Last active May 17, 2025 08:32
The potential-bugs code
fun fooBad(a: Any?) {
val x: String? = a as String? // If 'a' is not String, ClassCastException will be thrown.
}
fun fooGood(a: Any?) {
val x: String? = a as? String
}
@VovaStelmashchuk
VovaStelmashchuk / suspend-fun-scope-problem.kt
Created May 11, 2025 12:52
suspend fun CoroutineScope.badFoo() {
launch {
delay(1.seconds)
}
}
fun CoroutineScope.goodFoo() {
launch {
delay(1.seconds)
}
@VovaStelmashchuk
VovaStelmashchuk / bad-apply-block.kt
Created May 11, 2025 10:21
Although the scope functions are a way of making the code more concise, avoid overusing them: it can decrease your code readability and lead to errors. Avoid nesting scope functions and be careful when chaining them: it's easy to get confused about the current context object and the value of this or it.
// Try to figure out, what changed, without knowing the details
fun makeConnection(first: User, second: User) {
first.apply {
second.apply {
b = a
c = b
}
}
}
@VovaStelmashchuk
VovaStelmashchuk / sample-of-bad-good-if.kt
Last active May 9, 2025 16:23
fun runBarFlowBad() {
if (
user.role == UserDto.Role.ADMIN ||
(user.status == UserDto.Status.VIP ||
(user.status == UserDto.Status.TRIAL_VIP && user.paymentTransactionList.isNotEmpty())
&& user.age.isAdult())
) {
// do something
} else {
// do something else
@VovaStelmashchuk
VovaStelmashchuk / 1x1.dxf
Created January 2, 2025 19:44
0
SECTION
2
BLOCKS
0
ENDSEC
0
SECTION
2
ENTITIES
@VovaStelmashchuk
VovaStelmashchuk / Slug.kt
Created July 13, 2024 08:37
Kotlin correct ukraine slug generator, based on <add link here>
import java.util.Locale
fun slug(str: String): String {
return translit(str)
.lowercase(Locale.ENGLISH)
.replace(Regex("[^a-zA-Z0-9]"), "-")
.replace(Regex("-+"), "-")
.trim('-')
}
@VovaStelmashchuk
VovaStelmashchuk / layout.kbd.json
Last active February 10, 2024 12:26
Untitled Keyboard Layout
[
{
"background": {
"name": "Carbon fibre 2",
"style": "background-image: url('/bg/carbonfibre/carbon_texture1874.png');"
}
},
[
"esc\n`",
"Q",
@VovaStelmashchuk
VovaStelmashchuk / My zshrc
Created October 20, 2022 09:29
# If you come from bash you might have to change your $PATH.
# export PATH=$HOME/bin:/usr/local/bin:$PATH
# Path to your oh-my-zsh installation.
export ZSH="/Users/v.stelmashchuk/.oh-my-zsh"
# Set name of the theme to load --- if set to "random", it will
# load a random theme each time oh-my-zsh is loaded, in which case,
# to know which specific one was loaded, run: echo $RANDOM_THEME
# See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
@VovaStelmashchuk
VovaStelmashchuk / ReadMe.md
Last active April 14, 2020 22:11

SimpleTracker

This repo consist a small CLI mac os program for take screenshort each 10 minute.

convert must be install on computer. (brew install imagemagick)

How to install

  1. Close this repository (branch master, default)
  2. Add alias alias startWork='/startwork.sh'