Objective-C
Declare a slider property in the ViewController.h or in the interface of ViewController.m
@property (strong, nonatomic)UISlider *slider;
//Define frame of slider and add to view
CGRect frame = CGRectMake(0.0, 100.0, 320.0, 10.0);
UISlider *slider = [[UISlider alloc] initWithFrame:...
Install Anaconda(PyQt5 is build-in), especially for windows user.
Integrate QtDesigner and QtUIConvert in PyCharm(External Tools)
Open PyCharm Settings > Tools > External Tools
Create Tool(QtDesigner) - used to edit *.ui files
Create Tool(PyUIConv) - used to convert *.ui to *.py
...
Carthage Setup
Download the latest version of Carthage from the given link Download Link
Down in the Download section download the Carthage.pkg file.
Once the download is complete install it by double clinking on the download pkg file.
To check for successful download run the following command i...
Here I have shared a code snippet for implementing endless scrolling in recycle view.
Step 1:
First make a one abstract method in Recycleview adapter like below.
public abstract class ViewAllCategoryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
public abstract void lo...
DECLARE @ID AS INT;
SET @ID = (SELECT MIN(ID) from TABLE);
WHILE @ID IS NOT NULL
BEGIN
PRINT @ID;
SET @ID = (SELECT MIN(ID) FROM TABLE WHERE ID > @ID);
END
RwLocks allow a single producer provide any number of readers with data while preventing readers from seeing invalid or inconsistent data.
The following example uses RwLock to show how a single producer thread can periodically increase a value while two consumers threads are reading the value.
use...
Catalan numbers algorithm is Dynamic Programming algorithm.
In combinatorial mathematics, the Catalan numbers form a sequence of natural numbers that occur in various counting problems, often involving recursively-defined objects. The Catalan numbers on nonnegative integers n are a set of numbers t...
A palindrome is a word that can be read both ways, like 'kayak'.
This example will show how to find if a given word is a palindrome using Python3.
First, we need to turn a string into a stack (we will use arrays as stacks).
str = "string"
stk = [c for c in str] #this makes an array: [&...
Viewchild offers one way interaction from parent to child. There is no feedback or output from child when ViewChild is used.
We have a DataListComponent that shows some information. DataListComponent has PagerComponent as it's child. When user makes a search on DataListComponent, it gets a data fro...
If you want to create a custom validation rule, you can do so for instance in the boot method of a service provider, via the Validator facade.
<?php
namespace App\Providers;
use Illuminate\Support\ServiceProvider;
use Validator;
class AppServiceProvider extends ServiceProvider
{
...
public class KnapsackProblem
{
private static int Knapsack(int w, int[] weight, int[] value, int n)
{
int i;
int[,] k = new int[n + 1, w + 1];
for (i = 0; i <= n; i++)
{
int b;
for (b = 0; b <= w; b++)
{
...
Suppose, that we have three users :
The Administrator of the database > admin
The application with a full access for her data > read_write
The read only access > read_only
With below queries, you can set access privileges on objects created in the future in specified schema.
ALTER ...
If you're Using VueJS2 and like to use JSX along with it. In this case,to use the slot, the solution with example is below.We have to use this.$slots.default It's almost like this.props.children in React JS.
Component.js :
export default {
render(h) { //eslint-disable-line
return (
...
Schema changes:
You will need to define a new field type in your solr schema file and then you can create fields of that type. Example schema snippet:
<!-- Source: solr/example/.../conf/schema.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<schema name="a...
Let's get some theoretical knowledge before moving to the example. There are three important terms being used here Analyzers, Tokenizers, and Filters. To create such custom field you will need to create an analyzer with one tokenizer and one or more filters. As mentioned here, you can have only one ...
