marcoarruda

var crypto = require('crypto');

var hash_sha1 = function(password, salt){
  password = salt + password;
  var hash = crypto.createHash('sha1');
  hash.update(password);
  var value = hash.digest('hex');
  return value;
};

marcoarruda

// converted to JS from this python solution: https://stackoverflow.com/a/40116188/1408053

const window = 5;
let start = page - window
let end = page + window

if (start <= 0) {
  end = end - start + 1
  start = 1
}

marcoarruda

#!/bin/bash

export INPUT="${1}"
echo $INPUT
export OUTPUT="${2}"
echo $OUTPUT

if [ ! -f "$INPUT" ]
then
  echo "File $INPUT does not exists"

marcoarruda

To remove a submodule you need to:

• Delete the relevant section from the .gitmodules file.
• Stage the .gitmodules changes git add .gitmodules
• Delete the relevant section from .git/config.
• Run git rm --cached path_to_submodule (no trailing slash).
• Run rm -rf .git/modules/path_to_submodule (no trailing slash).
• Commit git commit -m "Removed submodule "
• Delete the now untracked submodule files rm -rf path_to_submodule

marcoarruda

import rospy
from std_msgs.msg import String

pub = rospy.Publisher('topic_name', String, queue_size=10)
rospy.init_node('node_name')
r = rospy.Rate(10) # 10hz
while not rospy.is_shutdown():
   pub.publish("hello world")
   r.sleep()

marcoarruda

#include <ros/ros.h>
#include <tf/tf.h>
#include <geometry_msgs/Twist.h>
#include <geometry_msgs/Pose2D.h>
#include <nav_msgs/Odometry.h>

#include <math.h>

geometry_msgs::Pose2D current_pose;
ros::Publisher pub_pose2d;

marcoarruda

#include <tf/tf.h>
#include <nav_msgs/Odometry.h>
#include <geometry_msgs/Pose2D.h>

ros::Publisher pub_pose_;

void odometryCallback_(const nav_msgs::Odometry::ConstPtr msg) {
    geometry_msgs::Pose2D pose2d;
    pose2d.x = msg->pose.pose.position.x;
    pose2d.y = msg->pose.pose.position.y;