Skip to content

Instantly share code, notes, and snippets.


Block or report user

Report or block geraldstanje

Hide content and notifications from this user.

Learn more about blocking users

Contact Support about this user’s behavior.

Learn more about reporting abuse

Report abuse
View GitHub Profile
geraldstanje / json_to_map.go
Created Sep 20, 2019 — forked from cuixin/json_to_map.go
json to map[string]interface{} example in golang
View json_to_map.go
package main
import (
func dumpMap(space string, m map[string]interface{}) {
for k, v := range m {
if mv, ok := v.(map[string]interface{}); ok {
geraldstanje /
Created May 29, 2018 — forked from jfarcand/
Fixing broken ngrep with OS X Mavericks

Migrating to OS X Mavericks breaks the ngrep utility. Doing:

sudo ngrep -d lo0 -q -W byline port 8080

stopped working where the process exits immediately. I didn't dig into the ngrep code, but was able to find a simple workaround by doing

sudo ngrep -q -W byline -d lo0 '' 'port 8080'

You can call that a lazy hack, but it work!

geraldstanje / kms-vault
Created Mar 8, 2018 — forked from hassy/kms-vault
Encrypt/decrypt files using AWS KMS
View kms-vault
#!/usr/bin/env bash
# License: MIT -
# Usage:
# Encrypt a file:
# kms-vault encrypt My-Key-Alias some-file-i-want-encrypted.txt > topsecret.asc
geraldstanje / Makefile
Created Mar 7, 2018 — forked from ryu1kn/Makefile
Encrypt/decrypt with AWS KMS
View Makefile
# How to encrypt/decrypt your text/blob secret with AWS KMS with AWS cli
SECRET_TEXT="my secret text"
DECRYPTED_SECRET_AS_BLOB=decrypted_secret_blob # Result of decrypt-blob target
View main.go
package main
import (
_ ""
View valsort.go
package main
import "fmt"
import "sort"
func main() {
m := map[string]int{
"One": 1,
"Two": 2,
"Three": 3,
View gist:1e03be27760582deaad9
1. Dining philosopher
2. Given a random number generator that returns a number between [0,1], how would you build a RNG that accounted for weighting?
3. You have two arrays with N integers in them. Merge those arrays using a recursive algorithm so that the integers in the final array are sorted.
4. generators(in python) and about minesweeper.
5. given a query and a document, highlight the query in the document and return a snippet of the document itself. Don't use existing large 3rd party libraries.
6. Finding the longest palindrome in a given string.
7. query log, and how to get the top K most frequent ones
8. Maximum subarray problem
9. Generate all permutations of an alphanumeric string (lowercase/uppercase only if a letter) 10. How can you improve the service of Y?
11. Pick a random number from weighted list based on weight
# Method one - w
w | head -n1 | cut -d":" -f4
# Method two - uptime
uptime | cut -d":" -f4- | sed s/,//g
# Method three - loads.d
sudo loads.d | awk '/./ { printf "%.2f %.2f %.2f\n", $7, $8, $9 }'

This example is the second of three in the Path Transitions tutorial; see the previous example for context.

The desired pairing of numbers for path interpolation is like this:

M x0, y0 L x1, y1 L x2, y2 L x3, y3 L xR, y4
   ↓   ↓    ↓   ↓    ↓   ↓    ↓   ↓
M xl, y0 L x0, y1 L x1, y2 L x2, y3 L x3, y4

Where xl is some negative value off the left side, and xr is some positive value off the right side. This way, the first point ⟨x0,y0⟩ is interpolated to ⟨xl,y0⟩; meaning, the x-coordinate is interpolated rather than the y-coordinate, and so the path appears to slide off to the left. Likewise, the incoming point ⟨xr,y4⟩ is interpolated to ⟨x3,y4⟩.

View responsive_d3_example.html
<!DOCTYPE html>
<script src=""></script>
<script src=""></script>
body {
font: 10px sans-serif;
rect {
You can’t perform that action at this time.