Tutorial by Examples: g

Your code in source control has version numbers either by default (SVN ids or Git SHA1 hashes) or explicitly (Git tags). Rather than manually updating versions in AssemblyInfo.cs you can use a build time process to write the version from your source control system into your AssemblyInfo.cs files and...

A higher-order function is one that takes another function as an argument or returns a function (or both). This is commonly done with lambdas, for example when passing a predicate to a LINQ Where clause: var results = data.Where(p => p.Items == 0); The Where() clause could receive many diffe...

This example shows how a MongoDB collection can be displayed in a React component. The collection is continuously synchronized between server and client, and the page instantly updates as database contents change. To connect React components and Meteor collections, you'll need the react-meteor-data...

Publications can be merged on the client, resulting in differently shaped documents within a single cursor. The following example represents how a user directory might publish a minimal amount of public data for users of an app, and provide a more detailed profile for the logged in user. // client...

In Swift you can easily separate a String into an array by slicing it at a certain character: 3.0 let startDate = "23:51" let startDateAsArray = startDate.components(separatedBy: ":") // ["23", "51"]` 2.2 let startDate = "23:51" let sta...

function onOpen() { // Add a custom menu to run the script var ss = SpreadsheetApp.getActiveSpreadsheet(); var searchMenuEntries = [ {name: "Run", functionName: "search"}]; ss.addMenu("Get Files", searchMenuEntries); } function getFiles() { // Get...

Then go into the mongo shell and initiate the replica set, like so: meteor mongo > rs.initiate() PRIMARY> rs.add("mongo-a") PRIMARY> rs.add("mongo-b") PRIMARY> rs.add("mongo-c") PRIMARY> rs.setReadPref('secondaryPreferred')

General Using the package RMySQL we can easily query MySQL as well as MariaDB databases and store the result in an R dataframe: library(RMySQL) mydb <- dbConnect(MySQL(), user='user', password='password', dbname='dbname',host='127.0.0.1') queryString <- "SELECT * FROM table1 t1 JO...

FunctionWidgetactionButtonAction ButtoncheckboxGroupInputA group of check boxescheckboxInputA single check boxdateInputA calendar to aid date selectiondateRangeInputA pair of calendars for selecting a date rangefileInputA file upload control wizardhelpTextHelp text that can be added to an input form...

A very useful feature many people overlook is the ability to construct a Map using a SOQL query. Map<Id, Account> accounts = new Map<Id, Account>([SELECT Id, Name FROM Account]); System.debug(accounts); When you run this code, accounts then contains a Map of your Account objects, ke...

Sorting arrays can be easily done with the Arrays api. import java.util.Arrays; // creating an array with integers int[] array = {7, 4, 2, 1, 19}; // this is the sorting part just one function ready to be used Arrays.sort(array); // prints [1, 2, 4, 7, 19] System.out.println(Arrays.toString...

We try to extract imdb top chart movies and ratings R> library(RCurl) R> library(XML) R> url <- "http://www.imdb.com/chart/top" R> top <- getURL(url) R> parsed_top <- htmlParse(top, encoding = "UTF-8") R> top_table <- readHTMLTable(parsed_top)[...

You can clear the console window using the console.clear() method. This removes all previously printed messages in the console and may print a message like "Console was cleared" in some environments.

The SilverStripe Grid Field Extensions Module has some very nice features to enhance the basic GridField... GridFieldAddExistingSearchButton - a more advanced search form for adding items GridFieldAddNewInlineButton - builds on GridFieldEditableColumns to allow inline creation of records. GridF...

The module Better Buttons for GridField adds new form actions and buttons to the GridField detail form. Save and add another: Create a record, and go right to adding another one, without having to click the back button, and then add again Save and close: Save the record and go back to list view ...

The Display Logic module allows you to add conditions for displaying or hiding certain form fields based on client-side behavior. This module is incredibly useful to make forms much more professional by showing only the appropriate fields and without adding a lot of custom JavaScript. Example usag...

The Grouped CMS Menu Module allows you to group CMS menu items into nested lists which expand when hovered over. This is useful when there are so many CMS menu items that screen space becomes an issue.

First thing to do is enable the mod rewrite on wamp go to Apache modules and scroll down the list If not showing tick enable it and then restart all servers. Linux users can also use below terminal command to enable rewrite module sudo a2enmod rewrite Then restart apache using: sudo service...

Chaining and Chainable is a design methodology used to design object behaviors so that calls to object functions return references to self, or another object, providing access to additional function calls allowing the calling statement to chain together many calls without the need to reference the v...

The GHC compiler has mature support for compiling with profiling annotations. Using the -prof and -fprof-auto flags when compiling will add support to your binary for profiling flags for use at runtime. Suppose we have this program: main = print (fib 30) fib n = if n < 2 then 1 else fib (n-1)...