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     • Imperative programming languages are composed of step-by-step instructions (how) for the computer. They describe explicitly which steps are to be performed in what order to obtain the desired solution at the end. By contrast, in declarative programming, the desired result (what) is described directly.
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     Imperative programming: Advantages & disadvantages of the ...

2. Top results related to what are imperative languages in the world

   • What are the differences between imperative and functional programming languages?

     Top Answer

     Answered Dec 29, 2017 · 2 votes

     Let’s use this simple code: a = b + c to examine the difference.

     When we write a = b + c in an imperative language, like C, we are assigning the current value of b + c to the variable a and nothing more. We aren’t making any fundamental statement about what a is. Rather, we are simply executing a step in a process.

     When we write a = b + c in a declarative language, like Microsoft Excel, we are asserting a relationship between a, b and c such that it is always the case that a is the sum of the other two. It’s not a step in a process, it’s an invariant, a guarantee, a declaration of truth.

     Functional languages are declarative as well, but almost by accident. In Haskel for example a = b + c also asserts an invariant relationship, but only because b and c are immutable.

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     1/5

   • What languages are accepted in the PDA

     Top Answer

     Answered May 03, 2017 · 0 votes

     There are different conventions but one common convention is that you accept when:

     • The input is exhausted; and
     • You are an in accepting state; and
     • The stack is empty.

     Really you could use several subsets of these rules, and use other sets of rules, and get systems that also work for context-free languages. Machines would have different interpretations in those systems but the expressive power would be the same.

     Assuming the three-point system above, as Welbog points out, this PDA accepts the language of even-length palindromes over the alphabet {0, 1}. Let's talk about what each state does.

     • q0 reads either 0 or 1 and pushes 0 or 1 , respectively, onto the stack, over and over again as long as you want. If you read string x , you push string x onto the stack.
     • q1 reads either 0 or 1 and, if you have that symbol on top of the stack, pops it off, over and over gain as long as you want. If you read string x , you pop x^R off the stack.

     If we make q1 an accepting state, and require that the stack be empty when the input is exhausted, that implies:

     • We popped off x^R, if x was read while in state q1.
     • The stack contains x^R if we read x^R in state q0.
     • We read x^R and then x and accepted, so we only accept strings like x^R x, i.e. even-length palindromes
     • Moreover, any even-length palindrome has a path through this PDA which results in it being accepted, since the PDA can remain in q0 for |x|/2 input symbols, transition to q1 and read the remaining |x|/2. Since the PDA is nondeterministic this is sufficient to say the string is accepted.

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     2/5

   • What are the causes of uneven distribution of population in the world?

     The distribution of the world’s population is not even, with some regions being densely populated while others remain sparsely populated. There are various factors that contribute to this uneven distribution, including historical, economic, social, and environmental factors.

     One of the most significant factors is historical and cultural factors. For instance, countries that were colonized or experienced significant immigration during historical periods may have a more diverse population. Furthermore, countries with a long history of political stability and economic growth may have higher populations, as they have attracted migrants and have experienced lower mortality rates.

     Economic factors such as the availability of resources and job opportunities also play a significant role in population distribution. Regions with abundant natural resources such as oil, minerals, or fertile land may attract more people. Additionally, areas with robust economies and diverse industries, such as urban areas, may have higher populations as they offer job opportunities and a higher standard of living.

     Social factors, such as religion and cultural practices, may also influence population distribution. For instance, certain religious or cultural practices may limit population growth in some areas, while promoting it in...

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     3/5

   • What in the world are Spring beans?

     Top Answer

     Answered Mar 02, 2022 · 256 votes

     The Spring core technologies reference documentation describes what beans are.

     Per the Introduction to the Spring IoC Container and Beans section (where "IoC" means "inversion of control"):

     In Spring, the objects that form the backbone of your application and that are managed by the Spring IoC container are called beans. A bean is an object that is instantiated, assembled, and managed by a Spring IoC container. Otherwise, a bean is simply one of many objects in your application. Beans, and the dependencies among them, are reflected in the configuration metadata used by a container.

     Beans and scope are described in the Bean Scopes section:

     When you create a bean definition, you create a recipe for creating actual instances of the class defined by that bean definition. The idea that a bean definition is a recipe is important, because it means that, as with a class, you can create many object instances from a single recipe.

     You can control not only the various dependencies and configuration values that are to be plugged into an object that is created from a particular bean definition but also control the scope of the objects created from a particular bean definition. This approach is powerful and flexible, because you can choose the scope of the objects you create through configuration instead of having to bake in the scope of an object at the Java class level. Beans can be defined to be deployed in one of a number of scopes.

     Other Answers

     Answered Dec 12, 2019 · 185 votes

     Spring beans are just instance objects that are managed by the Spring container, namely, they are created and wired by the framework and put into a "bag of objects" (the container) from where you can get them later.

     The "wiring" part there is what dependency injection is all about, what it means is that you can just say "I will need this thing" and the framework will follow some rules to get you the proper instance.

     For someone who isn't used to Spring, I think Wikipedia Spring's article has a nice description:

     Central to the Spring Framework is its inversion of control container, which provides a consistent means of configuring and managing Java objects using reflection. The container is responsible for managing object lifecycles of specific objects: creating these objects, calling their initialization methods, and configuring these objects by wiring them together.

     Objects created by the container are also called managed objects or beans. The container can be configured by loading XML files or detecting specific Java annotations on configuration classes. These data sources contain the bean definitions which provide the information required to create the beans.

     Objects can be obtained by means of either dependency lookup or dependency injection. Dependency lookup is a pattern where a caller asks the container object for an object with a specific name or of a specific type. Dependency injection is a pattern where the container passes objects by name to other objects, via either constructors, properties, or factory methods.

     Other Answers

     Answered Oct 09, 2021 · 117 votes

     First let us understand Spring:

     Spring is a lightweight and flexible framework.

     Analogy:

     Java Beans are classes that encapsulate many objects into a single object (the bean). The name "Bean" was given to encompass this standard, which aims to create reusable software components for Java.

     Spring Bean: is an object, which is created, managed and destroyed in Spring Container. We can inject an object into the Spring Container through the metadata(either xml or annotation), which is called inversion of control.

     Analogy: Let us assume farmer is having a farmland cultivating by seeds(or beans). Here, Farmer is Spring Framework, Farmland land is Spring Container, Beans are Spring Beans, Cultivating is Spring Processors.

     Like bean life-cycle, spring beans too having it's own life-cycle.

     img source

     Following is sequence of a bean lifecycle in Spring:

     • ["Instantiate: First the spring container finds the bean’s definition from the XML file and instantiates the bean.","",""]
     • ["Populate properties: Using the dependency injection, spring populates all of the properties as specified in the bean definition.","",""]
     • ["Set Bean Name: If the bean implements BeanNameAware interface, spring passes the bean’s id to setBeanName() method.","",""]
     • ["Set Bean factory: If Bean implements BeanFactoryAware interface, spring passes the beanfactory to setBeanFactory() method.","",""]
     • ["Pre-Initialization: Also called post process of bean. If there are any bean BeanPostProcessors associated with the bean, Spring calls postProcesserBeforeInitialization() method.","",""]
     • ["Initialize beans: If the bean implements IntializingBean ,its afterPropertySet() method is called. If the bean has init method declaration, the specified initialization method is called.","",""]
     • ["Post-Initialization: – If there are any BeanPostProcessors associated with the bean, their postProcessAfterInitialization() methods will be called.","",""]
     • ["Ready to use: Now the bean is ready to use by the application","",""]
     • ["Destroy: If the bean implements DisposableBean , it will call the destroy() method","",""]

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     4/5

   • What are the real-world benefits of declarative-UI languages such as XAML and QML?

     Top Answer

     Answered Apr 24, 2010 · 13 votes

     (Updated)

     The misconception with XAML is that it's not compiled. It is indeed compiled down to BAML a binary pre-tokenized XAML. Apparently there was a IL compiled version of XAML too called CAML. The OP pointed me to this good article explaining what XAML/BAML and CAML are.

     Anyway, to the question why to use it:

     XAML is simply a Serialization Format for C# objects that it is particularly well suited to describe hierarchical object structures, like found in WPF GUIs.

     What WPF helps you do is write less boring C# code like this:

     var grid = new Grid();grid.Content.add(new TextBlock() {Text = "Hello"});grid.Content.add(new TextBlock() {Text = "World"});-

     and just express it in a more readable way like this:

     <Grid> <TextBlock Text="Hello"> <TextBlock Text="World"></Grid>-

     Since WPF object nesting (putting stuff inside other objects) can get very deep, WPF makes it much easier to read than the resulting C# code.

     As for separation of concerns: XAML helps here too since it does only allow you to express objects and their relationships/properties, rather than logic. That forces you to separate logic from UI layout. The MVVM Pattern is very well suited for this task and allows for eay testability and interchangeable Views.

     Added complexity in XAML can be also easily dismissed because the same code in C# gets easily more complex than the XAML markup.

     I can't give you any insight into QTQuick though. Sorry

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     5/5

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3. People also ask

   What are examples of imperative programming languages?

   • Examples of imperative programming languages include: You can actually use Python in both declarative and imperative programming. Over the years, some other imperative languages have also received updates allowing them to support declarative-style programming. These include JavaScript, C++, and C#.

   Declarative vs imperative programming: 5 key differences - Educative

   www.educative.io/blog/declarative-vs-imperative-programming

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   Which programming language provides the paradigm of imperative programming?

   • There are multiple languages which can provide the paradigm of imperative programming. Programming languages which majorly able to implement imperative programming are Java, C, C++, C#, Ruby, Matlab, Python and R.

   What is Imperative Programming? - GeeksforGeeks

   www.geeksforgeeks.org/what-is-imperative-programming/

   See all results for this question

   What is imperative programming?

   • Imperative programming is the paradigm which is based on providing the result by focusing on the step-by-step command with manipulated state. There are many programming languages which are based on this approach of programming such as C++, python, R and Java. Control flow which exists as the major feature, facilitates the imperative programming.

   What is Imperative Programming? - GeeksforGeeks

   www.geeksforgeeks.org/what-is-imperative-programming/

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   What are the different domains of imperative programming?

   • There are different mutually exclusive domains of imperative programming i.e., procedural programming, structured programming, modular and OOP.

   What is Imperative Programming? - GeeksforGeeks

   www.geeksforgeeks.org/what-is-imperative-programming/

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   What is the difference between declarative programming and imperative language?

   • Declarative programming is when you say what you want, and imperative language is when you say how to get what you want. A simple example in Python: if i < 5: small_nums.append(i) The first example is declarative because we do not specify any "implementation details" of building the list.

   What is the difference between declarative and imperative paradigm in

   stackoverflow.com/questions/1784664/what-is-the-difference-between-declarative-and-imperative-paradigm-in-programmin

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   What is the difference between imperative and low-level programming?

   • While a computer program is written in an imperative way of coding compile binary executables that run on all CPU instructions. Low-level programming like machine language programmings such as assembly programming, C programming, and COBOL programming is using an imperative style.

   Imperative Programming: What It Is & Best Reasons To Use It

   robots.net/tech/imperative-programming-what-it-is-best-reasons-to-use-it/

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4. www.geeksforgeeks.org › what-is-imperative-programmingWhat is Imperative Programming? - GeeksforGeeks

   www.geeksforgeeks.org › what-is-imperative-programming

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   Apr 25, 2024 · There are multiple languages which can provide the paradigm of imperative programming. Programming languages which majorly able to implement imperative programming are Java, C, C++, C#, Ruby, Matlab, Python and R.

5. www.ionos.com › imperative-programmingImperative programming: Advantages & disadvantages of the ...

   www.ionos.com › imperative-programming

   • Cached

   May 21, 2021 · These are the best-known imperative programming languages: Fortran. Java. Pascal. ALGOL. C# C++. Assembler. BASIC. COBOL. Python. Ruby. The different imperative programming languages can, in turn, be assigned to three further subordinate programming styles – structured, procedural, and modular.

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7. www.educative.io › blog › declarative-vs-imperativeDeclarative vs imperative programming: 5 key differences

   www.educative.io › blog › declarative-vs-imperative

   • Cached

   May 29, 2024 · While we covered programming paradigms in a previous article, the most common way to differentiate between imperative and declarative programming is as follows: imperative programming instructs the computer on how to perform tasks, while declarative programming focuses on specifying what the desired outcome is.

8. www.altcademy.com › blog › understanding-declarativeUnderstanding Declarative vs. Imperative Programming Languages

   www.altcademy.com › blog › understanding-declarative

   • Cached

   Mar 6, 2024 · Languages that embody the imperative paradigm include: C. Java. Python (can also support a declarative style) These languages require you to manage many details, like memory management and the exact order in which operations occur. Declarative Programming: The Outcome-Focused Approach.

9. stackoverflow.com › questions › 1784664What is the difference between declarative and imperative ...

   stackoverflow.com › questions › 1784664

   • Cached

   Declarative programming is when you say what you want, and imperative language is when you say how to get what you want. A simple example in Python: # Declarative small_nums = [x for x in range(20) if x < 5] # Imperative small_nums = [] for i in range(20): if i < 5: small_nums.append(i)

   Usage example

   Declarative <<=====|==================>> Imperative

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10. en.wikipedia.org › wiki › Imperative_programmingImperative programming - Wikipedia

    en.wikipedia.org › wiki › Imperative_programming

    • Cached

    In computer science, imperative programming is a programming paradigm of software that uses statements that change a program's state. In much the same way that the imperative mood in natural languages expresses commands, an imperative program consists of commands for the computer to perform.

11. robots.net › tech › imperative-programming-what-itImperative Programming: What It Is & Best Reasons To Use It

    robots.net › tech › imperative-programming-what-it

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    Nov 3, 2019 · Low-level programming like machine language programmings such as assembly programming, C programming, and COBOL programming is using an imperative style. The idea of imperative programming was established way back in the 1950s to make the lives of programmers simpler and easier to read and write code.