Tutorial by Examples: io

Note : I am assuming that you know about how to use BottomNavigationView. This example I will explain how to add selector for BottomNavigationView. So you can state on UI for icons and texts. Create drawable bottom_navigation_view_selector.xml as <?xml version="1.0" encoding="...

Although Catch ex As Exception claims that it can handle all exceptions - there are one exception (no pun intended). Imports System Static Sub StackOverflow() ' Again no pun intended StackOverflow() End Sub Static Sub Main() Try StackOverflow() Catch ex As Exception ...

Generally most of the exceptions are not that critical, but there are some really serious exceptions that you might not be capable to handle, such as the famous System.StackOverflowException. However, there are others that might get hidden by Catch ex As Exception, such as System.OutOfMemoryExceptio...

As of Jekyll 3.2, you can use the filter where_exp to filter a collection by any of its properties. Say you have the following collection item in an "albums" collection: --- title: My Amazing Album --- ... You can combine the where_exp and first filters to grab just that one item: ...

Given an 'albums' collection, you can loop through and output each item: {% for album in site.albums %} {{ album.content }} {% endfor %} Any custom front matter variables are also available within the loop. {% for album in site.albums %} {{ album.title }} {{ album.content }} {%...

Given an 'albums' collection, an item can be added by creating a file in the <source>/_albums directory. Note that files not including frontmatter will be ignored. For instance, adding a file called my_album.md to the _albums directory would add it to the collection: --- title: "My Alb...

The code snippet below shows the various ways you can filter on an array of objects using lodash. let lodash = require('lodash'); var countries = [ {"key": "DE", "name": "Deutschland", "active": false}, {"key": "ZA&qu...

Detailed instructions on getting rebol set up or installed. The most mature and stable version of Rebol is the official Rebol2, available from the downloads page for multiple platforms. There are 2 flavors: Rebol/View (version with gui, ~ 0.6 MB) Rebol/Core (no gui, for servers, ~ 0.3 MB) ...

Always use Named Arguments to optional parameters, to avoid potential bugs when the method is modified. class Employee { public string Name { get; private set; } public string Title { get; set; } public Employee(string name = "<No Name>", string title = "&lt...

Detailed instructions on getting c#-4.0 set up or installed.

As of the C 2011 Standard, listed in §5.1.1.2 Translation Phases, the translation of source code to program image (e.g., the executable) are listed to occur in 8 ordered steps. The source file input is mapped to the source character set (if necessary). Trigraphs are replaced in this step. Contin...

<template> <div class="hello"> <p>{{ filtered() }}</p> </div> </template> <script> export default { name: 'hello', data () { return { list: ['toto', 'titi', 'tata', 'tete'] } }, methods: { filtered ...

After a while, you end up with many configuration items in your config.yml. It can make you configuration easier to read if you split your configuration across multiple files. You can easily include all files from a directory this way: config.yml: imports: - { resource: parameters.yml } ...

Create a new database. $ wp db create Drop an existing database. $ wp db drop --yes Reset the current database. $ wp db reset --yes Execute a SQL query stored in a file. $ wp db query < debug.sql

Go to Hardware -> Touch Pressure: To simulate a normal press, use Shift-Command-1 and a deep one, Shift-Command-2. If your MacBook has a Force Touch trackpad, you could use your trackpad force to simulate 3D / Force Touch.

By default, when you are streaming an audio, by exiting the app it will stop, but you can prevent this by turning on the first check box in Background capability page in Xcode. iOS will automatically handle this for you, and you don't need to write any code!

Creating a Scala function that receives an python RDD is easy. What you need to build is a function that get a JavaRDD[Any] import org.apache.spark.api.java.JavaRDD def doSomethingByPythonRDD(rdd :JavaRDD[Any]) = { //do something rdd.map { x => ??? } }

Basic Idea The notation used when describing the speed of your Python program is called Big-O notation. Let's say you have a function: def list_check(to_check, the_list): for item in the_list: if to_check == item: return True return False This is a simple function ...

Operations : Average Case (assumes parameters are randomly generated) Append : O(1) Copy : O(n) Del slice : O(n) Delete item : O(n) Insert : O(n) Get item : O(1) Set item : O(1) Iteration : O(n) Get slice : O(k) Set slice : O(n + k) Extend : O(k) Sort : O(n log n) Multiply : O(nk) x in...

A deque is a double-ended queue. class Deque: def __init__(self): self.items = [] def isEmpty(self): return self.items == [] def addFront(self, item): self.items.append(item) def addRear(self, item): self.items.insert(0,item) def removeFront(self): return self....