Tutorial by Topics: ion

Keeping your code clean and organized while developing a large Rails application can be quite a challenge, even for an experienced developer. Fortunately, there is a whole category of gems that make this job much easier.

If you have to change some things in renderer.js or main.js but you want to do the changes in index.html, you can use the remote function. It lets you access all the electron functions you need! use remote like require("electron"): main.js:    const electron = require("elec...

We may use QML to build hybrid applications, since it's much more easier than C++. So we should know how they communicate with each other.

How to validade user inputs. Validation constrains the values a user can input into a cell, and/or set a combobox for the user select the value for the cell. Optionally, a message can be displayed when the user clicks in a cell and a message error, when the validation fails.

What is introspection? Introspection is looking inward to know about the inside. That is a simple definition of introspection. In programming and Ruby in general…introspection is the ability to look at object, class… at run time to know about that one.

This topic illustrates how to exploit Functional Programming in a WPF application. The first example comes from a post by Māris Krivtežs (ref Remarks section at the bottom). The reason for revisiting this project is twofold: 1\ The design supports separation of concerns, while the model is kept pur...

This tutorial covers all the necessary steps required to upload an iOS app to the App Store.

Internationalization (i18n) and Localization (L10n) are used to adapt software according to differences in languages, regional differences and target audience. Internationalization : the process of planning for future localization i.e. making the software design flexible to an extent that it can ad...

Sometimes your SSH session stops responding. You can easily get out of that session using the following trick.

Fitting a line (or other function) to a set of data points.

You use analytic functions to determine values based on groups of values. For example, you can use this type of function to determine running totals, percentages, or the top result within a group. FIRST_VALUE ( scalar_expression ) OVER ( [ partition_by_clause ] order_by_clause [ rows_range_cl...

The goal of this topic is to document best practices when asking Apache Spark related questions.

The branching operation of sed can help control the flow of the program.

Unlike many languages, Kotlin distinguishes between mutable and immutable collections (lists, sets, maps, etc). Precise control over exactly when collections can be edited is useful for eliminating bugs, and for designing good APIs. listOf, mapOf and setOf returns read-only objects that you ca...

A user defined function in Progress ABL is a reusable program module. A function must be declared in the "main" procedure. It cannot be declared inside a procedure or inside another function. A function in Progress ABL isn't a "first class citizen" unlike in programming ...

This example shows how to change dynamically the Caption/Label of Customer Name field on Customer ScreenID AR303000 on Acumatica ERP, depending on current Customer ID selected on the same form. We could:

Rust has a built in capability to provide random number generation through the rand crate. Once part of the Rust standard library, the functionality of the rand crate was separated to allow its development to stabilize separate to the rest of the Rust project. This topic will cover how to simply add...

Now you can define Continuous Integration and Continuous Delivery (CI/CD) process as code with Jenkins 2.0 for your projects in iOS 10. Activities like to build, test, code coverage, check style, reports, and notifications can be described in only one file. To read the complete article go to Pipeli...

Completes the introduction to stores and folders started in part 2 of this tutorial Expected prior knowledge: You have studied part 2 of this tutorial or are already familiar with its contents.