Tutorial by Topics: m

Many people like working with promises and/or async/await syntax, but when writing a module it would be useful to some programmers to support classic callback style methods as well. Rather than creating two modules, or two sets of functions, or having the programmer promisify your module, your modul...

To integrate any database with nodejs you need a driver package or you can call it a npm module which will provide you with basic API to connect with the database and perform interactions . Same is true with mssql database , here we will integrate mssql with nodejs and perform some basic queries on...

More examples on how C++ can go wrong. Continuation from Undefined Behavior

SAS informats instruct SAS on how to read data from any input location (such as a file, an excel spreadsheet, a named pipe, or even another SAS variable, etc.) into a variable. SAS has just two data types - character and numeric, and each informat is specific to storing the value into either a char...

This post provides steps to use variables (User Variable, Package Parameter and Project Parameter) in the script component and viewing the updated value using Breakpoint and Watch window. ParameterDetailsUserVarIt is like a local variable used inside a package. Its value can be read and modifie...

It is better to use std::shared_mutex than std::shared_timed_mutex. The performance difference is more than double. If you want to use RWLock, you will find that there are two options. It is std::shared_mutex and shared_timed_mutex. you may think std::shared_timed_mutex is just the version 's...

The Archive module Microsoft.PowerShell.Archive provides functions for storing files in ZIP archives (Compress-Archive) and extracting them (Expand-Archive). This module is available in PowerShell 5.0 and above. In earlier versions of PowerShell the Community Extensions or .NET System.IO.Compressio...

Memory efficient bitmap caching: This is particularly important if your application uses animations as they will be stopped during GC cleanup and make your application appears sluggish to the user. A cache allows reusing objects which are expensive to create. If you load on object into memory, you...

TreeMap and TreeSet are basic Java collections added in Java 1.2. TreeMap is a mutable, ordered, Map implementation. Similarly, TreeSet is a mutable, ordered Set implementation. TreeMap is implemented as a Red-Black tree, which provides O(log n) access times. TreeSet is implemented using a TreeMap...

Google Spreadsheets has a powerful add on called Google Forms that allows a web developer to add simple forms easily to web sites in order to collect data from users. This article discusses the way to embed these into a web application. I've also created a Youtube video with a running commentary, ...

You cannot define more than three conditional formats for a range. Use the Modify method to modify an existing conditional format, or use the Delete method to delete an existing format before adding a new one.

ParameterDetails$params = []optional parameters for ['table' => 'tableName', 'sort' => 'ASC', 'columns' => 'colId, name, etc']$attributes = []optional list of attributes ['ul-class': => 'space separated list of classes', 'ul-attr': 'id="someId" data-pre="pre"', 'li-...

This will discuss how to change the environment so when someone types rails s they boot in not development but in the environment they want.

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

ParametersExplanationGLOBALShows the variables as they are configured for the entire server. Optional.SESSIONShows the variables that are configured for this session only. Optional.

How to use Json.Decode to create custom decoders, for example decoding into union types and user defined data types