When you have a huge JSON database, adding a value event listener doesn't make sense. It will return the huge JSON and parsing it would be time consuming. In such cases we can use pagination and fetch part of data and display or process it. Kind of like lazy loading or like fetching old chats when u...
In [1]: df = pd.DataFrame({'A': [1, 2, 3], 'B': [1.0, 2.0, 3.0], 'C': ['a', 'b', 'c'],
'D': [True, False, True]})
In [2]: df
Out[2]:
A B C D
0 1 1.0 a True
1 2 2.0 b False
2 3 3.0 c True
Getting a python list from a series:
In [3]: df['...
When we put the control of Label, the Label does not provide any event.
<Label x:Name="lblSignUp Text="Dont't have account?"/>
as shown the Label only display purpose only.
When the user want to replace Button with Label, then we give the event for Label.
As shown below:
XA...
First-time visitors to any web page has to make several HTTP requests. By using the “Expires” header you make the components of the requests cacheable. This avoids unnecessary HTTP requests on subsequent page views.
You want to find the area of the .htaccess file that starts with <IfModulemod_ex...
The task is to find the length of the longest subsequence in a given array of integers such that all elements of the subsequence are sorted in ascending order. For example, the length of the longest increasing subsequence(LIS) for {15, 27, 14, 38, 26, 55, 46, 65, 85} is 6 and the longest increasing ...
Ionic’s grid system is based on flexbox, a CSS feature supported by all devices that Ionic supports. The grid is composed of three units-grid, rows and columns. Columns will expand to fill their row, and will resize to fit additional columns.
ClassWidthwidth-1010%width-2020%width-2525%width-3333.33...
Cards are a great way to display important pieces of content, and are quickly emerging as a core design pattern for apps. They're are a great way to contain and organize information, while also setting up predictable expectations for the user. With so much content to display at once, and often so li...
Controller::renderAjax() method can be used to respond to an Ajax request. This method is similar to renderPartial() except that it will inject into the rendering result with JS/CSS scripts and files which are registered with the view
Assume we have login form in a view file:
<?php
use yii\hel...
Given a string what is the longest palindromic subsequence(LPS) of it? Let's take a string agbdba. The LPS of this string is abdba of length 5. Remember, since we're looking for subsequence, the characters need not to be continuous in the original string. The longest palindromic substring of the seq...
In order to search for packages in the databse, searching both in packages' names and descriptions:
pacman -Ss string1 string2 ...
To install a single package or list of packages (including dependencies), issue the following command:
sudo pacman -S package_name1 package_name2 ...
source
This Documentation is a small summary of the offical one
Prerequisites
Your PC must be running a 64-bit version of Windows 10 Anniversary Update build 14393 or later
To find your PC's CPU architecture and Windows version/build number, open Settings>System>About. Look for the OS Build ...
This chapter describes how to set up a Docker Container with Jenkins inside, which is capable of sending Docker commands to the Docker installation (the Docker Daemon) of the Host. Effectively using Docker in Docker. To achieve this, we have to build a custom Docker Image which is based on an arbitr...
Given coins of different denominations and a total, in how many ways can we combine these coins to get the total? Let's say we have coins = {1, 2, 3} and a total = 5, we can get the total in 5 ways:
1 1 1 1 1
1 1 1 2
1 1 3
1 2 2
2 3
The problem is closely related to knapsack problem. The o...
Given coins of different denominations and a total, how many coins do we need to combine to get the total if we use minimum number of coins? Let's say we have coins = {1, 5, 6, 8} and a total = 11, we can get the total using 2 coins which is {5, 6}. This is indeed the minimum number of coins require...
You can also use this code to setup an LED with a button switch with a pull up resistor, this could preferably be with the next step after setting up the intial LED controller
int buttonState = 0; // variable for reading the pushbutton status
void setup()
{
// initialize the LED pin as an ...
Joda-Time is a robust alternative to the Java date and time classes.
Prior to Java SE 8, the standard Java date and time classes like java.util.Calendar are difficult to use and prone to errors. Joda-Time emerged as the de-facto standard library for date and time manipulation in many open-source-pr...
Adding the aurelia-configuration to a cli application sometimes produces a build error. This is caused by a missing dependency so we simply add the dependency to the build bundle.
Try the following:
npm install deep-extend --save
npm install aurelia-configuration --save
Now add the followi...
The official site of angular-ui-bootstrap is here.
Follow the below instructions in order.
The list of files that are to be downloaded is in this link
Include all references in this order.
angular.js
angular-animate.js
ui-bootstrap-tpls-2.2.0.js (Reference to UI Bootstrap )
angular-sanitiz...
Two-element tuples
(,) is an example of a type that has a Bifunctor instance.
instance Bifunctor (,) where
bimap f g (x, y) = (f x, g y)
bimap takes a pair of functions and applies them to the tuple's respective components.
bimap (+ 2) (++ "nie") (3, "john") --> (5,...
