taylorza

Filling an array or slice with a repeated pattern

Looking for an efficient pure GO approach to copy repeating patterns into a slice, for a toy project, I ran a few tests and discovered a neat approach to significantly improve performance. For the toy project, I am using this to fill a background buffer with a specific RGB color pattern, so improving this performance significantly improved my acheivable framerate.

All the test were run with a buffer of 73437 bytes, allocated as follows

var bigSlice = make([]byte, 73437, 73437)

Fill the slice with the value 65 by looping through each element and setting the value

taylorza

package router

import "strings"

type trie struct {
	root trieNode
}

func newTrie() *trie {
	return &trie{

taylorza

package main

import (
	"net/url"
	"regexp"
	"strings"
)

// URLRewriter rewrites URL
type URLRewriter struct {

taylorza

TITLE (ROM BIOS FOR IBM PERSONAL COMPUTER)
.MODEL COMPACT
OPTION M510
;-------------------
;EQUATES
;-------------------

PORT_A          EQU     60H             ;8255 PORT A ADDR
PORT_B          EQU     61H             ;8255 PORT B ADDR
PORT_C          EQU     62H             ;8255 PORT C ADDR