hapless technoweenie

Something weird is happening on the net.

[mikeynine]

HP/Aruba 2530-48G-2SFP+ enable 3rd party transceivers

Telnet into your HP/Aruba 2530 switch that is running the latest firmware (at least 16.02.0016) and under the config menu send the following command

allow-unsupported-transceiver

[mikeynine]

It’s been more than a year since we had a huge TV campaign, we had tables growing up to 30M rows. Since then we had a book club focused on…

[mikeynine]

Quickly test date and time formats in a strftime sandbox with a handy reference.

Handy little reference for building strftime formatters. 

[mikeynine]

It’s been almost a year since Eureka’s first release and many developers have been using it since then. We are thankful for all the valuable support and cont...

[mikeynine]

Swift Class Structure with Initializer and Default Values

Here’s an example of swift class for a rectangle that has an initializer and optional default values. 

import Foundation

class Rectangle: Codable {

    var name:String

    var length:Int

    var width:Int

    init(name:String = "", length:Int  = 4, width:Int = 2) {

        self.name = name

        self.length = length

        self.width = width

    }

}

This rectangle will have an area of 8 by default: 

r = Rectangle()

print(r.length * r.width) // => 8

but if we define the width to be 4, we will have a square with an area of 16

s = Rectangle(width: 4)

print(s.length * s.width) // => 16

This also allows you to be able to instantiate your class without defining all values and not have it blow up on you.  

[mikeynine]

Working with Swift LocationManager

I started out creating location managers on each controller and then I read this. As there should ever only be one instance of the LocationManager, a singleton is definitely the right way to go. 

Swift 3 Singleton

import CoreLocation class LocationManager: CLLocationManager {    var isUpdatingLocation = false    static let shared = LocationManager()    override func startUpdatingLocation() {        super.startUpdatingLocation()        isUpdatingLocation = true    }    override func stopUpdatingLocation() {        super.stopUpdatingLocation()        isUpdatingLocation = false    } }

Usage

if LocationManager.shared.isUpdatingLocation {    print("Is currently updating location.") } else {    print("Location updates have stopped.") }

[mikeynine]

XCode 8.3 / Xcode 9.0 Refresh provisioning profile devices

Go to ~/Library/MobileDevice/Provisioning\ Profiles/ and delete all the provisioning profiles from there.

Go to XCode > Preferences > Accounts and select the Apple Id.

Click Download All Profiles. And it will download all the provisioning profiles again.

Xcode 9

Step 1 and 2 remain the same.

Click Download Manual Profiles to update your provisioning profiles.

Taken from: https://stackoverflow.com/questions/44060482/xcode-8-3-xcode-9-0-refresh-provisioning-profile-devices 

[mikeynine]

adam-p/markdown-here

Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending. - adam-p/markdown-here

where I go when I can’t remember the markdowns

[mikeynine]

The QR Code Generator

Free Online QR Code Generator to make your own QR Codes. Supports Dynamic Codes, Tracking, Analytics, Free text, vCards and more.

Simple QR Code Generator

[mikeynine]

Previewing your Ruby on Rails mailer locally.

You can preview your rails mailer locally without needing to send it by going to 

http://localhost:3000/rails/mailers/user_mailer/new_user

This will show you the HTML preview of the “new_user” template located in the user_mailer view folder. ENJOY!

[mikeynine]

Find processes that are using a specific port in OSX

Use the “List Open Files” command to display the PIDs of any process using a TCP port 

lsof -wni tcp:<port_number>

[mikeynine]

Recording iOS Simulator to Video in Xcode

The easiest way to get the device parameter is to launch the simulator manually through Xcode, then use the value  booted:

xcrun simctl io booted recordVideo <path>

Recording begins immediately, and continues until you kill the simctlprocess by pressing ^C.

[mikeynine]

Install React Native | Christian Engvall

Install React Native on macOS with Homebrew and node.

[mikeynine]

Tutorial : Getting Started with Kubernetes with Docker on Mac

If you are looking for running Kubernetes on your Windows laptop, go to this tutorial.

[mikeynine]

Command to generate new rails project with web pack for react and postgres database

rails new yourProjectName --webpack=react --database=postgresql -T

[mikeynine]

A Complete Guide to Flexbox | CSS-Tricks

Our comprehensive guide to CSS flexbox layout. This complete guide explains everything about flexbox, focusing on all the differnet possible properties for the parent element (the flex container) and the child elements (the flex items). It also includes history, demos, patterns, and a browser support chart.

[mikeynine]

Pretty good, casual overview on react native for iOS.