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ijson is a great library for working with JSON files in Python. Unfortunately, by default it uses a pure Python JSON parser as its backend. Much higher performance can be achieved by using a C backend.

*NgIf: It removes or recreates a part of DOM tree depending on an expression evaluation. It is a structural directive and structural directives alter the layout of the DOM by adding, replacing and removing its elements. <div *ngIf="false"> test </div> <!-- evaluates t...

Adding custom helpers can assist you with your development speed. There are a few things to take into consideration while writing such helper functions though, hence this tutorial. Just a few pointers: We've put the function definitions within a check (function_exists) to prevent exceptions whe...

This section provides an overview of what perforce is, and why a developer might want to use it. It should also mention any large subjects within perforce, and link out to the related topics. Since the Documentation for perforce is new, you may need to create initial versions of those related t...

Previous versions of Raspbian (prior to November 2016) had SSH enabled by default. They also had a default username (pi) and password (raspberry) this was done to make first time setup for new users easier. But this obviously represents a large security hole. The new release (November 2016) disables...

Topics should be made as simple as possible, but not simpler. This one suggests some organizing principles seen on Stack Overflow Documentation.

Batch and bash are quite different. Batch flags are indicated with a /, while bash flags use a -. Capitalization matters in bash, but (almost) not at all in batch. Batch variable names can contain spaces, bash variable names can not. Ultimately, both are ways of manipulating and interacting wit...

A concurrent collection is a [collection][1] which permits access by more than one thread at the same time. Different threads can typically iterate through the contents of the collection and add or remove elements. The collection is responsible for ensuring that the collection doesn't become cor...

WPF behaviors allow a developer to alter the way WPF controls acts in response to system and user events. Behaviors inherit from the Behavior class of the System.Windows.Interactity namespace. This namespace is a part of the overarching Expression Blend SDK, but a lighter version, suitable for beh...

PrestaShop contains within itself many open source libraries

Datatables 1.10.x is the latest release as of now. Though it is backwards compatible to the previous versions (1.9 etc.), it is highly advisable to use the latest version which directly returns a datatable api object. Another major change, that is the most visible, is the change from Hungarian Nota...

This manual contains the various ways in which portlet can co-ordinate or communicate amongst each other and the various scenarios for which a particular approach is used. References: Public render param JSR 286 specs Portlet session

The Binary Calculator can be used to calculate with numbers of any size and precision up to 2147483647-1 decimals, in string format. The Binary Calculator is more precise than the float calculation of PHP. string bcadd ( string $left_operand , string $right_operand [, int $scale = 0 ] ) int b...

Protractor/WebDriverJS has this mechanism called Control Flow - it is an internal queue of promises, it keeps the code execution organized.

Before you jump into ASP. NET MVC to develop your web application you should consider the advantages and disavantages of the framework and you should know that there is another web framework made and maintained by Microsoft that is ASP .NET Web Forms. Which one should you choose is a matter of know...

Fibonacci Numbers is the integer sequence (OEIS A000045) F(n) that obeys the following recurrence: F(n) = F(n-1) + F(n-2) For F(0) = 0, F(1) = 1, the series thus formed is 0, 1, 1, 2, 3, 5, 8, 13, 21, ... Fibonacci numbers appear in several areas of Discrete Mathematics and Algorithms.

We know that spring-boot by default runs using H2 database. In this article, we will see how to tweak the default configuration to work with MySQL database. As a pre-requisite, make sure that MySQL is already running on port 3306 and has your database created.