Tutorial by Examples: w

Start with the Sublime Tutor

This tutorial is inspired from classic vimtutor. You will get to learn some handy shortcuts to work with Sublime Text 3. By the end of this tutorial, you would be familiar with ST's most important and frequently used shortcuts and features. Installation Via Package Control: Install Package Cont...

sublimetext3 • Getting started with sublimetext3

Using the wrong operator

In OCaml, there are different arithmetic operators for floats and integers. Additionally, these operators can only be used on 2 floats or 2 integers. Here are invalid expressions in OCaml 1.0 + 2.0 1 + 2.0 1 +. 2 1 +. 2.0 The correct expression for each of these respectively are 1. +. 2. fl...

OCaml • Common Pitfalls

Odoo on AWS

Note: Loading Odoo onto an AWS EC2 Container requires an AWS account Loading Odoo onto an AWS EC2 Instance can be done with one-click, simply go here or search for "Odoo AWS" in Google. This may take some time, but once it's ready you'll need to do two things: Get your password Fin...

openerp • Getting started with openerp

Compound view for SVG/VectorDrawable as drawableRight

Main motive to develop this compound view is, below 5.0 devices does not support svg in drawable inside TextView/EditText. One more pros is, we can set height and width of drawableRight inside EditText. I have separated it from my project and created in separate module. Module Name : custom_edit_d...

Android • Creating Custom Views

The currentColor keyword

currentColor is most usefull in inline SVGs. With this you can inherit the parents css color and use it everywhere colors are used in SVG. In this example the first circle uses the text color as fill color, and the second circle uses it as the stroke color. <html> <head> ...

SVG • Colors

Reading XML form URL with Retrofit 2

We will use retrofit 2 and SimpleXmlConverter to get xml data from url and parse to Java class. Add dependency to Gradle script: compile 'com.squareup.retrofit2:retrofit:2.1.0' compile 'com.squareup.retrofit2:converter-simplexml:2.1.0' Create interface Also create xml class wrapper in our cas...

Android • Retrofit2

Powershell external collector script function

<# .DESCRIPTION Writes the metric out in bosun external collector format which is compatible with scollector external scripts .PARAMETER metric Name of the metric (eg : my.metric) .PARAMETER type Type of metric (counter, gauge, etc) .PARAMETER unit ...

Bosun • Scollector: External Collectors

Request a merkle block with bitcore-p2p

In this example we will ask the bitcoin network for the merkle block number 442603. In order to do this we need to send a filterload message and then we have to send a getdata message using the inventory type MSG_MERKLEBLOCK. The peers should reply with a merkleblock message for the requested bloc...

bitcoin • Thin Clients

What is Unit Testing?

This is a bit of a primer. It's mostly put it in because documentation is forced to have an example, even if it's intended as a stub article. If you already know unit-testing basics, feel free to skip forward to the remarks, where specific frameworks are mentioned. Unit testing is ensuring that a...

Java Language • Unit Testing

Why Use Getters and Setters?

Consider a basic class containing an object with getters and setters in Java: public class CountHolder { private int count = 0; public int getCount() { return count; } public void setCount(int c) { count = c; } } We can't access the count variable because it's private. But we can ac...

Java Language • Getters and Setters

Keyboard short-cut to replace currenlty highlighted word

For example, with following nmap: nmap <expr> <S-F6> ':%s/' . @/ . '//gc<LEFT><LEFT><LEFT>' select a word with *, type Shift-F6, type in a replacement and hit Enter to rename all occurrences interactively.

vim • Substitution

Data Flow

This is outline of comprehensive Overview. Flux pattern assumes the use of unidirectional data flow. Action — simple object describing action type and other input data. Dispatcher — single action receiver and callbacks controller. Imagine it is central hub of your application. St...

React • Using ReactJS in Flux way

ROC-AUC score with overriding and cross validation

One needs the predicted probabilities in order to calculate the ROC-AUC (area under the curve) score. The cross_val_predict uses the predict methods of classifiers. In order to be able to get the ROC-AUC score, one can simply subclass the classifier, overriding the predict method, so that it would a...

scikit-learn • Receiver Operating Characteristic (ROC)

Removing incomplete rows

There might be times where you have a data frame and you want to remove all the rows that might contain an NA value, for that the function complete.cases is the best option. We will use the first 6 rows of the airquality dataset to make an example since it already has NAs x <- head(airquality) ...

R Language • Cleaning data

Binding a String in the ViewModel to a TextBox in the View

SampleViewModel.vb 'Import classes related to WPF for simplicity Imports System.Collections.ObjectModel Imports System.ComponentModel Public Class SampleViewModel Inherits DependencyObject 'A class acting as a ViewModel must inherit from DependencyObject 'A simple string p...

Visual Basic .NET Language • WPF XAML Data Binding

Set View backround with image

self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Background.png"]];

iOS • Set View Background

Bullet-proof button with spacers

This button derives from this example by Email on Acid. It is entirely code-based, so it will display without images downloaded, and the entire button is hoverable + clickable. Additionally, this example also includes spacers to help control how much vertical space appears before and after the butt...

email • Bulletproof Buttons

Navigate to a newest page

To navigate to a newest page, we can use the Navigate() method from the frame. contentRoot.Navigate(typeof(MyPage), parameter); where contentRoot is the Frame instance and MyPage a control inheriting from Page In MyPage, the OnNavigatedTo() method will be called once the navigation will complet...

uwp • Navigation

Spawning Rules

There are some spawning rules in Worlds in Bukkit. They are: Animal Spawning Creature Spawning Amount of the above that can be spawned Animal Spawning Animal spawning can be split into the following categories: Water Animals Land Animals To get the amount of animals that can be...

bukkit • World Manipulation

Canny Edge Video from Webcam Capture - Python

import cv2 def canny_webcam(): "Live capture frames from webcam and show the canny edge image of the captured frames." cap = cv2.VideoCapture(0) while True: ret, frame = cap.read() # ret gets a boolean value. True if reading is successful (I think). frame ...

opencv • Edge detection