The @Lazy allow us to instruct the IOC container to delay the initialization of a bean.
By default, beans are instantiated as soon as the IOC container is created, The @Lazy allow us to change this instantiation process.
lazy-init in spring is the attribute of bean tag. The values of lazy-init are...
Say we have a Product class with Multiple Colors which can be on many Products.
public class Product
{
public int ProductId { get; set; }
public ICollection<ColorProduct> ColorProducts { get; set; }
}
public class ColorProduct
{
public int ProductId { get; set; }
...
The following VHDL model drives signal s from two different processes. As the type of s is bit, an unresolved type, this is not allowed.
-- File md.vhd
entity md is
end entity md;
architecture arc of md is
signal s: bit;
begin
p1: process
begin
s <= '0';
wait;
e...
So let's say you have a project that depends on Qt5 and you need to copy the relevant dlls to your build directory and you don't want to do it manually; you can do the following:
cmake_minimum_required(VERSION 3.0)
project(MyQtProj LANGUAGES C CXX)
find_package(Qt5 COMPONENTS Core Gui Widgets)
#...
Download the installer for the current version of XAMPP
Go through the installation wizard and change nothing if you are not sure what you are changing.
After the installation you see the XAMPP control panel.
Just click the start button of Apache and MySQL to run both with the basic configurati...
To run WordPress on your computer you need to configurate a database first.
Be sure that Apache and MySQL are running (see Installing XAMPP step 3)
Start a web browser of your choice and enter "localhost" in the address.
Choose your preferred language and select in the category "...
An anonymous, inlined function defined with lambda. The parameters of the lambda are defined to the left of the colon. The function body is defined to the right of the colon. The result of running the function body is (implicitly) returned.
s=lambda x:x*x
s(2) =>4
function a(x = 5) {
"use strict";
}
is invalid JavaScript and will throw a SyntaxError because you cannot use the directive "use strict" in a function with Non-Simple Parameter list like the one above - default assignment x = 5
Non-Simple parameters include -
Default a...
ClassDeclaration's Name is bound in different ways in different scopes -
The scope in which the class is defined - let binding
The scope of the class itself - within { and } in class {} - const binding
class Foo {
// Foo inside this block is a const binding
}
// Foo here is a let binding...
This example attempts to create a bucket called 'hello-world' and, as the bucket hello-world has already been created by someone else in S3's global namespace, throws the following exception. Change 'hello-world' to something else to avoid the exception by creating a uniquely named bucket. The new...
strComputer = "."
Set objWMIService = GetObject("winmgmts:" _& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colSettings = objWMIService.ExecQuery _("Select * from Win32_ComputerSystem")
For Each objCompu...
This will be our example data frame:
df = pd.DataFrame({"color": ['red', 'blue', 'red', 'blue']},
index=[True, False, True, False])
color
True red
False blue
True red
False blue
Accessing with .loc
df.loc[True]
color
True red
True red
...
This will be our example data frame:
color name size
0 red rose big
1 blue violet big
2 red tulip small
3 blue harebell small
Using the magic __getitem__ or [] accessor. Giving it a list of True and False of the same length as the dataframe will give you:
...
Let's consider this example, that outputs the squares of the numbers 3, 5, and 7:
let nums = [3, 5, 7]
let squares = nums.map(function (n) {
return n * n
})
console.log(squares)
Run in RunKit
The function passed to .map can also be written as arrow function by removing the function keywor...
Validating the Name entered by a User contain the following check
Ensure it is not empty
Ensure it contain only alphabets, space and/or dot.
So, the regular expression for this is
^[A-Z][a-z]*(\.?\s?[A-Z][a-z]*)+$
This means
^ -> Should start with
[A-Z] -> the first lette...
Consider a company where every employee who is a manager, manages 1 or more employees, and every employee has only 1 manager.
This results in two tables:
EMPLOYEES
EMP_IDFIRST_NAMELAST_NAMEMGR_IDE01JohnnyAppleseedM02E02ErinMacklemoreM01E03ColbyPaperworkM03E04RonSonswanM01
MANAGERS
MGR_IDFIRST_N...
One of the common ways to parametrize your performance scripts is to use a CSV file. The best example of CSV input files usage is a login process. If you want to test your application across different users, you need to provide a list of user credentials.
Let’s assume that we have a login request t...
Another way to parametrize your performance scripts is to use database data through JDBC. JDBC is an application programming interface that defines how a client can access a database.
First of all, download the JDBC driver to your database (refer to the database vendor). For example, mysql driver c...
If you need to execute a repeating sequence of the same action with different parameters, use the ‘Parameterized Controller’ 3rd party plugin from JMeter-Plugins project.
You need to install this plugin first by following installation procedure.
Let’s assume that we want to parameterize the login ...
