Tutorial by Examples: s

You can use Scan or TryScan methods to look for specific messages in the queue and process them regardless of how many messages are before them. Both methods look at the messages in the queue in the order they arrived and will look for a specified message (up until optional timeout). In case there i...

The root process scatters the contents in sendbuf to all processes (including itself) using the MPI_Scatter operation. int rank; int size; int sendcount = 1; int recvcount = sendcount; int sendbuf[3]; int recvbuf; int root = 0; MPI_Comm_size (MPI_COMM_WORLD, &size); if (size != 3) ...

#!/bin/bash deploy=false uglify=false while (( $# > 1 )); do case $1 in --deploy) deploy="$2";; --uglify) uglify="$2";; *) break; esac; shift 2 done $deploy && echo "will deploy... deploy = $deploy" $uglify && echo "will...

Basics require('http').globalAgent.maxSockets = 25 // You can change 25 to Infinity or to a different value by experimenting Node.js by default is using maxSockets = Infinity at the same time (since v0.12.0). Until Node v0.12.0, the default was maxSockets = 5 (see v0.11.0). So, after more tha...

""" CannyTrackbar function allows for a better understanding of the mechanisms behind Canny Edge detection algorithm and rapid prototyping. The example includes basic use case. 2 of the trackbars allow for tuning of the Canny function and the other 2 help with understanding h...

In the last example, you can see that EF figures out which column is the foreign key and where should it point to. How? By using conventions. Having a property of type Person that is named Person with a PersonId property leads EF to conclude that PersonId is a foreign key, and it points to the prima...

You might want to rename the fields in the join table to be a little more friendly. You can do this by using the usual configuration methods (again, it doesn't matter which side you do the configuration from): public class CarEntityTypeConfiguration : EntityTypeConfiguration<Car> { publi...

I have to admit, I'm not really a fan of letting EF infer the join table wihtout a join entity. You cannot track extra information to a person-car association (let's say the date from which it is valid), because you can't modify the table. Also, the CarId in the join table is part of the primary ke...

HERE Android Premium SDK samples Now available on Github! [https://github.com/heremaps/here-android-sdk-examples][1] HERE iOS Premium SDK samples Now available on Github! [https://github.com/heremaps/here-ios-sdk-examples][1] Please refer to the README.md on how to get started. Note the samples ...

As an example we want to set all string properties of a sample class class TestClass { val readOnlyProperty: String get() = "Read only!" var readWriteString = "asd" var readWriteInt = 23 var readWriteBackedStringProperty: String = "" ...

Extra goals enable to add processing to DCG clauses, for example, conditions that the elements of the list must satisfy. The extra goals are observed between curly braces at the end of a DCG clause. % DCG clause requiring an integer int --> [X], {integer(X)}. Usage: ?- phrase(int, [3]). t...

The extra arguments add results to predicates of a DCG clause, by decorating the derivation tree. For example, it's possible to create a algebraic grammar that computes the value at the end. Given a grammar that supports the operation addition: % Extra arguments are passed between parenthesis afte...

Let's consider the predicate sumDif/2, verified if the structure of a list matches several constraints. The first term represents the list to analyze and the second term another list that holds the part of the first list that is unknown to our constraints. For the demonstration, sumDif/2 recognizes...

Let's define a grammar enabling us to perform additions, multiplications with the usage of parenthesis. To add more value to this example, we are going to compute the result of the arithmetic expression. Summary of the grammar: expression → times expression → times '+' expression times → elemen...

In general, MIDI protocol is broken down into "messages". There are 4 general classes of messages: Channel Voice Channel Mode System Common System Real-Time Messages Messages start with a byte value above 0x80. Any value below 0x7F is considered data. Effectively meaning that 1...

Step 1 – Install LAMP To start with Laravel, we first need to set up a running LAMP server. If you have already running LAMP stack skip this step else use followings commands to set up lamp on Ubuntu system. Install PHP 5.6 $ sudo apt-get install python-software-properties $ sudo add-apt-reposit...

Suppose we want to know how many users have the same name. Let us create table users as follows: create table users( id int primary key auto_increment, name varchar(8), count int, unique key name(name) ); Now, we just discovered a new user named Joe and would like to take hi...

Suppose we want to know how many users have the same name. Let us create table users as follows: create table users( id serial, name varchar(8) unique, count int ); Now, we just discovered a new user named Joe and would like to take him into account. To achieve that, we need to d...

Master process spawns two worker processes and scatters sendbuf to workers. master.c #include "mpi.h" int main(int argc, char *argv[]) { int n_spawns = 2; MPI_Comm intercomm; MPI_Init(&argc, &argv); MPI_Comm_spawn("worker_program", MPI_ARGV_NULL...

Install Firebase resource in the the AppScript To do that click on Resources and then on Libraries. Firebase has a unique project library key that need to be installed in the AppScript. Click on Libraries The following pop-up appears. Enter the following project key in the textbox. MYeP8ZEE...