Tutorial by Examples: l

To split strings, Guava introduces the Splitter class. Why not use Java's splitting capabilities? As a rule, Guava does not duplicate functionality that is readily available in Java. Why then do we need an additional Splitter class? Do the split methods in Java's String class not provide us with a...

#include <SPI.h> #define CSPIN 1 void setup() { pinMode(CSPIN, OUTPUT); // init chip select pin as an output digitalWrite(CSPIN, 1); // most slaves interpret a high level on CS as "deasserted" SPI.begin(); SPI.beginTransaction(SPISettings(1000000, MSBFIRST, SPI_MO...

Returns the number of characters of the given String Considerations If a number is given instead a String, the result will be the length of the String representing the given number. I.e. If we execute length(12345) the result will be the same as length("12345"), that is 5 If...

Here are some example on how to add new filters/functions to twig,the synax for adding Twig_Functions are the same as the Twig_Filter ones, just change the keywords accordingly <?php $twig = new Twig_Environment($loader); /* You can chain a global function */ $twig->addFilter(ne...

This is an example on how to call a web service from salesforce. The code below is calling a REST based service hosted on data.gov to find farmers markets close to the zipcode. Please remember in order to invoke a HTTP callout from your org, you need to tweak the remote settings for the org. strin...

Custom Setting Custom Setting Field Custom Setting Field Value When the field is checked the validation rule will be disabled, for the running user or in this example, their profile - The rule can also be disabled for a whole Salesforce org - Validation Rule AND( /* the below is the...

Explanation In this example a simple Trigger has been created to change the Close Date of an Opportunity, that's about to be inserted or updated, to a date 10 days in the future. The Apex Controller custom setting's checkbox field enables the code to be disabled at the user / profile / org level. ...

If you need to find the last day of the month, you can do complicated DateTime gymnastics or you can use the following method. Say you want to find the last day of February 2021. Do the following: Integer month = 2; Integer day = null; Integer year = 2021; // Create a new DateTime object for ...

Sometimes we need to accept route params as well as access the HTTP Request params. We can still type hint the Requests class in laravel controller and achieve that as explained below E.g. We have a route that update a certain post like this (passing post id i route ) Route::put('post/{id}', 'Post...

import xlsxwriter # sample data chart_data = [ {'name': 'Lorem', 'value': 23}, {'name': 'Ipsum', 'value': 48}, {'name': 'Dolor', 'value': 15}, {'name': 'Sit', 'value': 8}, {'name': 'Amet', 'value': 32} ] # excel file path xls_file = 'chart.xlsx' # the workbook w...

In C, multi-line comments, /* and */, do not nest. If you annotate a block of code or function using this style of comment: /* * max(): Finds the largest integer in an array and returns it. * If the array length is less than 1, the result is undefined. * arr: The array of integers to search....

This test class will test the IsBlank(...) method of SomeClass. Below is the example SomeClass. This class has only the one, basic static method, but you will be unable to deploy it to a production instance for use until you have reached the code coverage threshold. public class SomeClass { ...

XML Data can be written as is in XQuery and will be found in the output. The following code can be considered valid XQuery : <application> <id>MyApp</id> <name>My Application</name> <version>1.0</version> </application> Note that your XQ...

To address data from an XML input, XQuery uses XPath. It makes it easy to filter data and restructure it. Given the following XML input <?xml version="1.0" encoding="UTF-8"?> <applications> <application> <id>MyApp</id> <name>My...

Resolving scoped services during application startup can be difficult, because there is no request and hence no scoped service. Resolving a scoped service during application startup via app.ApplicationServices.GetService<AppDbContext>() can cause issues, because it will be created in the sc...

Visual Studio 2013 can be downloaded here The setup is pretty easy.Select features you need and select the disk to install VS13 on.Click install and wait for it to finish.

Various websites provide online access to C++ compilers. Online compiler's feature set vary significantly from site to site, but usually they allow to do the following: Paste your code into a web form in the browser. Select some compiler options and compile the code. Collect compiler and/or pro...

from bs4 import BeautifulSoup import requests # Use the requests module to obtain a page res = requests.get('https://www.codechef.com/problems/easy') # Create a BeautifulSoup object page = BeautifulSoup(res.text, 'lxml') # the text field contains the source of the page # Now use a CSS ...

A great existing example of the Adapter pattern can be found in the SWT MouseListener and MouseAdapter classes. The MouseListener interface looks as follows: public interface MouseListener extends SWTEventListener { public void mouseDoubleClick(MouseEvent e); public void mouseDown(MouseE...

functions.php: function rm_init_js() { wp_enqueue_script( 'custom-ajax-script', get_template_directory_uri() . '/js/ajax.js', array( 'jquery', 'wp-util' ), '1.0', true ); // pass custom variables to JS wp_localize_script( 'custom-ajax-script', 'BEJS', array( 'action' => ...