An example of implementation which give a possibility to detect if user single or double tap on UITableViewCell.
override func viewDidLoad() {
viewDidLoad()
let doubleTapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleDoubleTap(sender:)))
double...
An example of implementation UITableView which allows to detect if cell has been tapped single or double time.
override func viewDidLoad() {
viewDidLoad()
let doubleTapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleDoubleTap(sender:)))
doubleTa...
To create a background with a gradient you can use the CAGradientLayer class:
Swift 3.1:
func createGradient() {
let caLayer = CAGradientLayer()
caLayer.colors = [UIColor.white, UIColor.green, UIColor.blue]
caLayer.locations = [0, 0.5, 1]
caLayer.bounds = self.bounds
self...
To add a custom image for the thumb of the slider, simply call the setThumbImage method with your custom image:
Swift 3.1:
let slider = UISlider()
let thumbImage = UIImage
slider.setThumbImage(thumbImage, for: .normal)
Suppose we have a simple class with validation annotations
public class UserDTO {
@NotEmpty
private String name;
@Min(18)
private int age;
//getters/setters
}
A controller to check the UserDTO validity.
@RestController
public class ValidationController {
@Reque...
In following example we will create table movies with AWS Ruby SDK v2.
Here, each Movie as one unique Partition Key as id, and Range Key year. Apart from this we want to be able to query movies with their name, hence we will create a Global Secondary Index (GSI) name-year-index with name as Hash Ke...
Q-learning is a variant of model-free reinforcement learning. In Q-learning we want the agent to estimate how good a (state, action) pair is so that it can choose good actions in each state. This is done by approximating an action-value function (Q) that fits in equation below:
Where s and a are ...
So the good news is that Apple kindly includes a Ruby interpreter. Unfortunately, it tends not to be a recent version:
$ /usr/bin/ruby -v
ruby 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin16]
If you have Homebrew installed, you can get the latest Ruby with:
$ brew install ruby...
This example show you how you add new sounds to your MOD and play them. First of all you need a sound file which has the format *.ogg. Any other format is not allowed by the Minecraft application and will be rejected.
The soundfile has the name: sound1.ogg
Put the sound file under the following pa...
Run the following bash script as sudo
#!/bin/bash
# get deps
apt -y install build-essential libncurses5-dev libxml2-dev libsqlite3-dev libssl-dev libsrtp0-dev uuid-dev libjansson-dev
# download
cd /usr/src
wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-14-current.tar.gz...
Ex1:-
let str1 = 'stackoverflow';
let str2 = 'flowerovstack';
These strings are anagrams.
// Create Hash from str1 and increase one count.
hashMap = {
s : 1,
t : 1,
a : 1,
c : 1,
k : 1,
o : 2,
v : 1,
e : 1,
r : 1,
f : 1,
l : 1,
w : 1...
CREATE INDEX ord_customer_ix ON orders (customer_id);
By default, if we do not mention anything, oracle creates an index as a b-tree index. But we should know when to use it.
B-tree index stores data as binary tree format. As we know that, index is a schema object which stores some sort of entry...
CREATE BITMAP INDEX
emp_bitmap_idx
ON index_demo (gender);
Bitmap index is used when data cardinality is low.
Here, Gender has value with low cardinality. Values are may be Male, Female & others.
So, if we create a binary tree for this 3 values while searching it will have unnecessary ...
CREATE INDEX first_name_idx ON user_data (UPPER(first_name));
SELECT *
FROM user_data
WHERE UPPER(first_name) = 'JOHN2';
Function based index means, creating index based on a function.
If in search (where clause), frequently any function is used, it's better to create index based on ...
Working with Kettle
There are two versions of Kettle aka Pentaho Data Integration :
Kettle CE (Community Edition)
Kettle EE (Enterprise Edition)
Documents aims mainly on Kettle CE edition.
Prerequisites
PDI requires the Oracle Java Runtime Environment (JRE) version 7. You can obtain a JRE ...
Any @Component or @Configuration could be marked with @Profile annotation
@Configuration
@Profile("production")
public class ProductionConfiguration {
// ...
}
The same in XML config
<beans profile="dev">
<bean id="dataSource" class="&l...
Protractor Installation and Setup
Step 1: Download and install NodeJS from here. Make sure you have latest version of node. Here, I am using node v7.8.0. You will need to have the Java Development Kit(JDK) installed to run selenium.
Step 2: Open your terminal and type in the following command to i...
