IdrisCytron

from gpiozero import LED, Button, Buzzer
import cv2
import re

led = LED(19)
sw1 = Button(21)
buzzer = Buzzer(26)

cap = cv2.VideoCapture(0)

rnagarajanmca

Device specifications

• Raspberry pi - Any
• USB Audio Adapter - USB Adapter
• USB Hub - Zebronics USB Hub

List USB Device

Once you connected the USB Audio device with Raspberry pi use following command to see the list of connected USB device

SheldonWangRJT

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

zoltanctoth

from pyspark.sql.types import StringType
from pyspark.sql.functions import udf

maturity_udf = udf(lambda age: "adult" if age >=18 else "child", StringType())

df = spark.createDataFrame([{'name': 'Alice', 'age': 1}])
df.withColumn("maturity", maturity_udf(df.age))

df.show()

sidwood

#!/usr/bin/env bash

#
# Constants
#

# DOWNLOAD_PATH=vendor/selenium
DOWNLOAD_PATH=node_modules/protractor/selenium

CD_VERSION=2.10

sandys

# run using ```rvm jruby-1.6.7 do  jruby "-J-Xmx2000m" "--1.9" tej.rb```

require 'rubygems'
require 'nokogiri'
require 'csv'

f = File.open("/tmp/preview.html")
doc = Nokogiri::HTML(f)
csv = CSV.open("/tmp/output.csv", 'w',{:col_sep => ",", :quote_char => '\'', :force_quotes => true})

UniIsland

#!/usr/bin/env python

"""Simple HTTP Server With Upload.

This module builds on BaseHTTPServer by implementing the standard GET
and HEAD requests in a fairly straightforward manner.

"""

cjus

#!/bin/bash
function jsonval {
    temp=`echo $json | sed 's/\\\\\//\//g' | sed 's/[{}]//g' | awk -v k="text" '{n=split($0,a,","); for (i=1; i<=n; i++) print a[i]}' | sed 's/\"\:\"/\|/g' | sed 's/[\,]/ /g' | sed 's/\"//g' | grep -w $prop`
    echo ${temp##*|}
}

json=`curl -s -X GET http://twitter.com/users/show/$1.json`
prop='profile_image_url'
picurl=`jsonval`

p4merge

#!/bin/bash

NULL=$TMP/$$.NULL
for arg; do [[ $arg = /dev/null ]] && arg=$NULL && echo "" >"$arg"; args+=("$arg"); done;

/c/Program\ Files/Perforce/p4merge "${args[@]}"
[[ -f $NULL ]] && rm $NULL