#typescript#react#javascript
enum vs const enum in TypeScript: what actually lands in your React bundle
Same source code, different JavaScript after compilation — export enum vs export const enum on NotificationChannel.
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Short notes on code, React patterns and things I find interesting.
- #javascript#intl#unicode
Intl.Segmenter: count characters like a human, not like a computer
JavaScript's .length lies about emoji and accented characters. Intl.Segmenter splits text into real graphemes — here's how to use it.
Read more → - #react#hooks#performance
The useMemo trap nobody talks about
When memoization hurts more than it helps — a quick look at unnecessary useMemo in React.
Read more → - #python#algorithms#strings
Python: split a string into character pairs
Split text into two-character chunks. When the length is odd, pad the final pair with an underscore.
Read more → - #python#algorithms#math
Python: Arabic number to Roman numerals
Convert a number from 1 to 3999 into Roman notation — digit by digit, with subtractive rules for 4 and 9.
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Python: narcissistic (Armstrong) number
Check whether a number equals the sum of its digits each raised to the power of the digit count — e.g. 153 = 1³ + 5³ + 3³.
Read more → - #python#algorithms#strings
Python: duplicate character encoding
Replace each character with '(' if it appears once, or ')' if more than once — case insensitive.
Read more → - #python#algorithms#strings
Python: pseudo-encryption by shuffling indices
Swap even and odd index characters N times — plus a decrypt function that reverses it.
Read more → - #python#algorithms#recursion
Python: string permutations without duplicates
Generate all unique permutations of a non-empty string — recursion with set deduplication.
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