Tutorial by Examples: ce

Optimizing Magento Changing The .htaccess File

Magento is a very popular eCommerce application. It offers a great deal of customization and abilities from initial install. Here are a few suggestions for optimizing a Magento installation. Enabling Output Compression In your .htaccess file for Magento you will find a section of text starting wit...

Longest Increasing Subsequence

The task is to find the length of the longest subsequence in a given array of integers such that all elements of the subsequence are sorted in ascending order. For example, the length of the longest increasing subsequence(LIS) for {15, 27, 14, 38, 26, 55, 46, 65, 85} is 6 and the longest increasing ...

Longest Palindromic Subsequence

Given a string what is the longest palindromic subsequence(LPS) of it? Let's take a string agbdba. The LPS of this string is abdba of length 5. Remember, since we're looking for subsequence, the characters need not to be continuous in the original string. The longest palindromic substring of the seq...

Basic example

You can configure Mail by just adding/changing these lines in the app's .ENV file with your email provider login details, for example for using it with gmail you can use: MAIL_DRIVER=smtp MAIL_HOST=smtp.gmail.com MAIL_PORT=587 [email protected] MAIL_PASSWORD=yourPassword MAIL_E...

Common instances of Bifunctor

Two-element tuples (,) is an example of a type that has a Bifunctor instance. instance Bifunctor (,) where bimap f g (x, y) = (f x, g y) bimap takes a pair of functions and applies them to the tuple's respective components. bimap (+ 2) (++ "nie") (3, "john") --> (5,...

Basic Example of Html 5 cache

this is our index.html file <!DOCTYPE html> <html manifest="index.appcache"> <body> <p>Content</p> </body> </html> then we will create index.appcache file with below codes CACHE MANIFEST index.html write those files that you want ...

Aliasing a long namespace

This is usually used for renaming or shortening long namespace references such referring to components of a library. namespace boost { namespace multiprecision { class Number ... } } namespace Name1 = boost::multiprecision; // Both Type declarations are equivale...

Declaring sub-namespaces

To declare a single namespace with hierarchy use following example: namespace MyProject\Sub\Level; const CONNECT_OK = 1; class Connection { /* ... */ } function connect() { /* ... */ } The above example creates: constant MyProject\Sub\Level\CONNECT_OK class MyProject\Sub\Level\Connection...

Using instanceof

instanceof requires that the variable is of type any. This code (try it): class Pet { } class Dog extends Pet { bark() { console.log("woof"); } } class Cat extends Pet { purr() { console.log("meow"); } } function example(foo: any) { ...

Date Difference Calculation

To compare the difference of two dates, we can do the comparison based on the timestamp. var date1 = new Date(); var date2 = new Date(date1.valueOf() + 5000); var dateDiff = date1.valueOf() - date2.valueOf(); var dateDiffInYears = dateDiff/1000/60/60/24/365; //convert milliseconds into years ...

Basic example of handling Session

1)First, add dependency in project.json - "Microsoft.AspNetCore.Session": "1.1.0", 2)In startup.cs and add AddSession() and AddDistributedMemoryCache() lines to the ConfigureServices like this- services.AddDistributedMemoryCache(); //This way ASP.NET Core will use a Memory Cach...

basic example

As the last layer created by docker build -t mytag . showed ---> Running in d9a42e53eb5a You just launch the last created image with a shell and launch the command, and you will have a more clear error message docker run -it d9a42e53eb5a /bin/bash (this assumes /bin/bash is available, it ma...

Establishing a pipe to a child process

File descriptors and FILE objects are per-process resources that cannot themselves be exchanged between processes via ordinary I/O. Therefore, in order for two distinct processes to communicate via an anonymous pipe, one or both participating processes must inherit an open pipe end from the process...
POSIX • Pipes

Connecting two child processes via a pipe

Connecting two child processes via a pipe is performed by connecting each of two children to the parent via different ends of the same pipe. Usually, the parent will not be party to the conversation between the children, so it closes its copies of both pipe ends. int demo() { int pipefds[2]; ...
POSIX • Pipes

Access a hash table value by key.

An example of defining a hash table and accessing a value by the key $hashTable = @{ Key1 = 'Value1' Key2 = 'Value2' } $hashTable.Key1 #output Value1 An example of accessing a key with invalid characters for a property name: $hashTable = @{ 'Key 1' = 'Value3' Key2 = 'Val...

Basic elm Http.post json request to node.js express server

Live upcase server that returns error when input string is longer than 10 characters. Server: const express = require('express'), jsonParser = require('body-parser').json(), app = express(); // Add headers to work with elm-reactor app.use((req, res, next) => { res.setHeader...

Basic examples - Classification and Regression

###### Used for both Classification and Regression examples library(randomForest) library(car) ## For the Soils data data(Soils) ###################################################### ## RF Classification Example set.seed(656) ## for ...

Linux - Compiling from source

`This way you will get the newest ruby but it has its downsides. Doing it like this ruby will not be managed by any application. !! Remember to chagne the version so it coresponds with your !! you need to download a tarball find a link on an official website (https://www.ruby-lang.org/en/downloa...

Using .loc and slicers

Unlike the .xs method, this allows you to assign values. Indexing using slicers is available since version 0.14.0. In [1]: import pandas as pd import numpy as np arrays = [['bar', 'bar', 'baz', 'baz', 'foo', 'foo', 'qux', 'qux'], ['one', 'two', 'one', 'two', 'one', 'two', 'one', 'two'...

Installing the autodoc extension

Add the autodoc module in the extensions list present in the conf.py file at the root of your documentation: extensions = [ 'sphinx.ext.autodoc', ... ]

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