Tutorial by Examples: b

Linux - troubleshooting gem install

First UC in the example Gems $> gem install nokogiri can have a problem installing gems because we don't have the permissions for it. This can be sorted out in more then just one way. First UC solution a: U can use sudo. This will install the gem for all the users. This method should be frowne...

Ruby Language • Installation

Using SUMPRODUCT with boolean arrays

Consider the following ranges A1:A3 and B1:B3 as below =SUMPRODUCT(--(A1:A3="c"),B1:B3) This will first manipulate (A1:A3="c") into the following array A1="c" = FALSE A2="c" = FALSE A3="c" = TRUE Then apply the -- operator which converts...

excel • SUMPRODUCT function

Create a new repository on Bitbucket website

Go to https://bitbucket.org/dashboard/overview Login to your Bitbucket account Choose repositories from the top menu, then choose Create Repository Choose the owner, enter the repository name and select if you want to have it public or private repository Choose the repository type (Git or Merc...

bitbucket • Create a new repository

Bundler/inline (bundler v1.10 and later)

Sometimes you need to make a script for someone but you are not sure what he has on his machine. Is there everything that your script needs? Not to worry. Bundler has a great function called in line. It provides a gemfile method and before the script is run it downloads and requires all the necessa...

Ruby Language • Gem Usage

Getting started with Bitbucket - Create an account

Create an account Go to https://bitbucket.org/ Click on Get Started on the top right corner Enter your email address, and click continue Enter your full name, password and verification code. Then click Continue An email will be sent to you to verify that you created your account After that...

bitbucket • Getting started with bitbucket

How to add users and groups to an existing Bitbucket repository

Go to the Bitbucket repository you want to add users to. On the left, go to Settings (the last icon on the bottom left). Select Users and group access. Under Users, start typing the name or email address of the user whom you want to add. Select the privilege you want to grant that user (Read, ...

bitbucket • Add collaborators to a repository

2.EJS file example(refer 1.setting up... before this)

the following is an ejs file. <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Hello, world!</title> </head> <body> <%= message %> </body> </html>

express • View engine setup

3.rendering view with express(refer 2.EJS file... before this)

app.get("/",function(req,res){ response.render("index",{ //render the index when root(/) is requested message:"rendered view with ejs" }); });

express • View engine setup

4.after rendering final HTML is created(refer 3.rendering... before this)

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Hello, world!</title> </head> <body> message:"rendered view with ejs" </body> </html>

express • View engine setup

How to find what frameworks are available in the current version of Rails?

Use the config.frameworks option to get an array of Symbols that represent each framework.

Ruby on Rails • Rails frameworks over the years

These are the basics.

JVM is an abstract computing machine or Virtual machine that resides in your RAM. It has a platform-independent execution environment that interprets Java bytecode into native machine code. (Javac is Java Compiler which compiles your Java code into Bytecode) Java program will be running inside the...

Java Language • Java Virtual Machine (JVM)

Basic Pane

import React from 'react'; class Pane extends React.Component { constructor(props) { super(props); } render() { return React.createElement( 'section', this.props ); } }

React • User interface solutions

Tab

import React from 'react'; class Tab extends React.Component { constructor(props) { super(props); } render() { var props = Object.assign({ className: this.props.active ? 'active' : '' }, this.props); return React.createElement( ...

React • User interface solutions

Build-in Roles

Built-in database user roles and database administration roles roles exist in each database. Database User Roles read readwrite

MongoDB • MongoDB Authorization Model

Getting Started with BigCommerce

Go to the BigCommerce homepage. Enter a store name in the field labeled Create your store name, then click Start my free trial now. Your store name can be changed at any time after starting your trial. Fill out the new trial store form, then click Create my store now. Once yo...

bigcommerce • Getting started with bigcommerce

Iterating over object properties

<div ng-repeat="(key, value) in myObj"> ... </div> For example <div ng-repeat="n in [42, 42, 43, 43]"> {{n}} </div>

AngularJS • ng-repeat

Binomial Distribution

We now illustrate the functions dbinom,pbinom,qbinom and rbinom defined for Binomial distribution. The dbinom() function gives the probabilities for various values of the binomial variable. Minimally it requires three arguments. The first argument for this function must be a vector of quantiles(the...

R Language • Distribution Functions

An evidence-based approach to Java performance tuning

Donald Knuth is often quoted as saying this: "Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs, and these attempts at efficiency actually have a strong negative impact when debugging and maintenance are considered....

Java Language • Java Performance Tuning

Basic usage

The embed tag is new in HTML5. This element provides an integration point for an external (typically non-HTML) application or interactive content. <embed src="myflash.swf">

HTML • Embed

MS-DOS, TASM/MASM function to read a 16-bit unsigned integer

Read a 16-bit unsigned integer from input. This function uses the interrupt service Int 21/AH=0Ah for reading a buffered string. The use of a buffered string let the user review what they had typed before passing it to the program for processing. Up to six digits are read (as 65535 = 216 - 1 has ...

Intel x86 Assembly Language & Microarchitecture • Converting decimal strings to integers