Tutorial by Examples: a

Let's assume we have a search results page that displays a user's search query back to them. The code below is an example of how this could be done in PHP: Results for "<?php echo $_GET['query'] ?>" For this to work, you would access the page with a URL like: https://yoursite.te...

This example illustrates how to create a simple sine curve using Matplotlib # Plotting tutorials in Python # Launching a simple plot import numpy as np import matplotlib.pyplot as plt # angle varying between 0 and 2*pi x = np.linspace(0, 2.0*np.pi, 101) y = np.sin(x) ...

In this example, we take a sine curve plot and add more features to it; namely the title, axis labels, title, axis ticks, grid and legend. # Plotting tutorials in Python # Enhancing a plot import numpy as np import matplotlib.pyplot as plt x = np.linspace(0, 2.0*np.pi, 101) y = np.sin(x) ...

The following are some of the common extensions used in Fortran source files and the functionalities they can work on. Lowercase f in the extension These files do not have the features of preprocessor directives similar to C-programming language. They can be directly compiled to create object file...

In this example, a sine curve and a cosine curve are plotted in the same figure by superimposing the plots on top of each other. # Plotting tutorials in Python # Adding Multiple plots by superimposition # Good for plots sharing similar x, y limits # Using single plot command and legend import...

Similar to the previous example, here, a sine and a cosine curve are plotted on the same figure using separate plot commands. This is more Pythonic and can be used to get separate handles for each plot. # Plotting tutorials in Python # Adding Multiple plots by superimposition # Good for plots sha...

Because Node.js runs on a single process uncaught exceptions are an issue to be aware of when developing applications. Silently Handling Exceptions Most of the people let node.js server(s) silently swallow up the errors. Silently handling the exception process.on('uncaughtException', functio...

There are two methods using which you can consume data from AWS S3 bucket. Using sc.textFile (or sc.wholeTextFiles) API: This api can be used for HDFS and local file system as well. aws_config = {} # set your aws credential here sc._jsc.hadoopConfiguration().set("fs.s3n.awsSecretAccessK...

Detailed instructions on getting indexeddb set up or installed.

HTML (classes used are based on Semantic-UI) <div id="app" class="ui grid"> <div class="row"> <div class="column"> <div class="ui label">Vechicle Make</div> <select class="ui dropdown"...

Seismic is an Android device shake detection library by Square. To use it just start listening to the shake events emitted by it. @Override protected void onCreate(Bundle savedInstanceState) { sm = (SensorManager) getSystemService(SENSOR_SERVICE); sd = new ShakeDetector(() -> { /* rea...

PTT Button android.intent.action.PTT.down android.intent.action.PTT.up Confirmed on: RG730, RG740A

ImageMagick includes a number of command-line utilities for manipulating images. Here we will use compare command-line tool. compare tool is very useful. Suppose you want to test (e.g. layout, color, icons etc.) the difference between your expected design UI HTML file with actual result of JSP...

Detailed instructions on getting vector set up or installed.

function openDatabase(dbName) { var request = indexedDB.open(dbName); request.onsuccess = function (e) { var database = request.result; if (database) { console.log("Database initialized."); } else { console.error("Database is not initialized!");...

pry is a powerful tool that can be used to debug any ruby application. Setting up a ruby-on-rails application with this gem is very easy and straightforward. Setup To start debugging your application with pry Add gem 'pry' to the application's Gemfile and bundle it group :development, :test ...

In xcode developers can pause/break the execution of running app and can examine the state of program. Here's how to pause running programs: Just open any file in which we want to put breakpoint and click on the line on gutter at left side where we want to pause execution. So here we placed bre...

Given a rod of length n inches and an array of length m of prices that contains prices of all pieces of size smaller than n. We have to find the maximum value obtainable by cutting up the rod and selling the pieces. For example, if length of the rod is 8 and the values of different pieces are given ...

#include <threads.h> #include <stdio.h> int run(void *arg) { printf("Hello world of C11 threads."); return 0; } int main(int argc, const char *argv[]) { thrd_t thread; int result; thrd_create(&thread, run, NULL); thrd_join(&...

In order to trigger a "upgradeneeded" event you need to request the database with version higher than the current version - otherwise the event won't be triggered. function createTable(dbName, dbversion, tableName) { var request = indexedDB.open(dbName, dbversion); request.onupgrade...