Tutorial by Examples: r

If you have predefined ranges and want to use specific colors for those ranges you can declare custom colormap. For example: import matplotlib.pyplot as plt import numpy as np import matplotlib.colors x = np.linspace(-2,2,500) y = np.linspace(-2,2,500) XX, YY = np.meshgrid(x, y) Z = np.sin(...

A shader program, in the OpenGL sense, contains a number of different shaders. Any shader program must have at least a vertex shader, that calculates the position of the points on the screen, and a fragment shader, that calculates the colour of each pixel. (Actually the story is longer and more co...

To create a new project use the following command (HelloWorld is the name of the project and play-java is the template) $ ~/activator-1.3.10-minimal/bin/activator new HelloWorld play-java You should get an output similar to this one Fetching the latest list of templates... OK, application &...

The first step in you journey in the Play Framework world is to download Activator. Activator is a tool used to create, build and distribute Play Framework applications. Activator can be downloaded from Play downloads section (here I will be using version 1.3.10) After you downloaded the file, ext...

When we created our project, Activator told us how we can run our application To run "HelloWorld" from the command line, "cd HelloWorld" then: /home/YourUserName/HelloWorld/activator run There is a small pitfall here: activator executable is not in our project root, but ...

An "Hello World" doesn't deserve this name if it does not provide a Hello World message. So let's make one. In the file app/controllers/HomeController.java add the following method: public Result hello() { return ok("Hello world!"); } And in your conf/routes file add t...

add_filter( 'widget_text', 'shortcode_unautop' ); add_filter( 'widget_text', 'do_shortcode' );enter code here Add this to a plugin or the functions.php file to enable shortcodes in widgets. The code first stops WordPress turning line breaks into paragraph tags and then lets shortcodes to parse f...

Calling the function string InvoiceHtml = myFunction.RenderPartialViewToString("PartialInvoiceCustomer", ToInvoice); // ToInvoice is a model, you can pass parameters if needed Function to generate HTML public static string RenderPartialViewToString(string viewName, object model) { ...

Recursive use of make means using make as a command within a makefile. This technique is useful when a large project contains sub-directories, each having their respective makefiles. The following example will help understand advantage of using .PHONY with recursive make. /main |_ Makefile ...

This sample demonstrates how to import the worksheet Azure Excel file blob to DB on the Azure SQL Server and how to export it from DB to Azure Excel blob. Prerequisites: Microsoft Visual Studio 2015 version Open XML SDK 2.5 for Microsoft Office An Azure storage account Azure SQL Server Add...

First and foremost you should be able to find the bottleneck of your script and note that no optimization can compensate for a poor choice in data structure or a flaw in your algorithm design. Secondly do not try to optimize too early in your coding process at the expense of readability/design/quali...

Julia supports regular expressions1. The PCRE library is used as the regex implementation. Regexes are like a mini-language within a language. Since most languages and many text editors provide some support for regex, documentation and examples of how to use regex in general are outside the scope of...

The substrings captured by capture groups are accessible from RegexMatch objects using indexing notation. For instance, the following regex parses North American phone numbers written in (555)-555-5555 format: julia> phone = r"\((\d{3})\)-(\d{3})-(\d{4})" and suppose we wish to ext...

Assume having a method returning IEnumerable<T>, f.e. private IEnumerable<T> GetData() { try { // return results from database } catch(Exception exception) { throw; } } Creates an Observable and starts a method asynchronously. Sel...

Visual Studio (IDE) WPA (performance analyzer) WinDbg (debugger) IDA Pro (disassembler) dotPeek (decompiler for .NET) WinMerge (diff tool) HxD or 010 editor (hex editor) Speedcrunch (calculator) Firefox (browser) Rohitab API monitor (API call monitoring) SOS (a WinDbg extension for .NET)...

Auxilliary function that takes a seed and evaluates: uint wang_hash(uint seed) { seed = (seed ^ 61) ^ (seed >> 16); seed *= 9; seed = seed ^ (seed >> 4); seed *= 0x27d4eb2d; seed = seed ^ (seed >> 15); return seed; } anot...

profile_user_profile: path: /profile/{id} defaults: { _controller: ProfileBundle:Profile:profile } requirements: id: \d+ methods: [get, delete] If you decide to use Routing.yml instead of Annotations You can get better view of all routes and...

/* The result can be use for fast way to use columns on Insertion/Updates. Works with tables and views. Example: eTableColumns 'Customers' ColumnNames ------------------------------------------------------ Id, FName, LName, Email, PhoneNumber, PreferredContact INSERT INTO Customers (Id, ...

Run Terminates chain. No other middleware method will run after this. Should be placed at the end of any pipeline. app.Run(async context => { await context.Response.WriteAsync("Hello from " + _environment); }); Use Performs action before and after next delegate. app.Use(...