| use std::collections::HashMap; | |
| use std::hash; | |
| struct DisjointSet<T> { | |
| elements: HashMap<T, usize>, | |
| parents: HashMap<usize, usize>, | |
| } | |
| impl<T: Eq + hash::Hash> DisjointSet<T> { | |
| pub fn new() -> Self { |
| struct SplitBy<'a, T> { | |
| slice: &'a [T], | |
| value: T, | |
| last_idx: usize, | |
| } | |
| impl<'a, T: PartialEq> Iterator for SplitBy<'a, T> { | |
| type Item = &'a [T]; | |
| fn next(&mut self) -> Option<Self::Item> { |
| ### | |
| ### | |
| ### UPDATE: For Win 11, I recommend using this tool in place of this script: | |
| ### https://christitus.com/windows-tool/ | |
| ### https://github.com/ChrisTitusTech/winutil | |
| ### https://www.youtube.com/watch?v=6UQZ5oQg8XA | |
| ### iwr -useb https://christitus.com/win | iex | |
| ### | |
| ### |
This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.
The script is here:
#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"
| CREATE OR REPLACE FUNCTION concat_tsvectors(tsv1 tsvector, tsv2 tsvector) | |
| RETURNS tsvector AS $$ | |
| BEGIN | |
| RETURN coalesce(tsv1, to_tsvector('default', '')) | |
| || coalesce(tsv2, to_tsvector('default', '')); | |
| END; | |
| $$ LANGUAGE plpgsql; | |
| CREATE AGGREGATE tsvector_agg ( | |
| BASETYPE = tsvector, |