Most voted "characteristic-language" questions
Use this tag in questions relating to the operation of some feature of a programming language (Feature language), such as its type system, supported constructs, etc. Do not use it if the focus of the question is simply its use in solving a distinct problem.
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answer614
viewsWhat are free and connected variables in Prolog?
What is defined as a free or connected variable. I did a little research, but I could not understand very well the mathematical concept and differentiate them. If possible, explain with examples…
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answers38
viewsWhat is the purpose of the var command when used in the function statement?
In Javascript it is possible to write functions with or without the use of the keyword var, see below two functions that illustrate this situation: var soma = function(a, b) { return a + b; }…
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answers340
viewsModules vs Classes in Javascript
I’m starting to work with Javascript Classes. But I see that some people use and recommend the construction of a project separated by modules. As I still have no experience working in these formats,…
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answers43
viewsIs it possible to create compiled WEB programs?
In the case of programming for WEB, it is possible to develop systems for WEB using compiled programming languages such as C++, for example? Or to WEB only dynamic languages are accepted? If…
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answers89
viewsLanguage for processing business rules
I am architecting a new project in C# and one of the needs is that module does mathematical calculations on values that I will have in the database. This module needs to share these rules with…
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answer118
viewsFunction parameters not previously defined
I have seen some javascript functions with parameters that are not previously defined, but still work. The doubt arose with the function below. The function myFunction() calls the method…
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answer74
viewsWhat makes a source code an easy to maintain code?
During the technical course I took, I often heard my programming teachers (C# and JAVA) speak about the importance of developing easy-to-maintain code, but what in itself determines that a source…
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answer293
viewsWhat is a hypothetical programming language?
In a short excerpt from a contest question, he mentioned about various forms of representation of algorithms and about the language of hypothetical programming. What would be the definition of a…
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answer4788
viewsDo the tags that have no closure have any particular purpose?
I often come across tags HTML being used in two ways. First form: <title>Stackoverflow</title> Second form: <meta charset="utf-8"> Note that in the tag title there was closure…
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answer609
viewsWorking with Hexadecimal in Java
I saw an example of code on the Java documentation site on bit that can be checked here. This class belongs to the example cited in link above: class BitDemo { public static void main(String[] args)…
java characteristic-language operators int hexadecimalasked 7 years, 5 months ago Pena Pintada 4,678 -
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answer108
viewsMachine Learning with a server language and another desktop language
I could use Python, for the machine Learning and C++ for a desktop program? The machine Learning is done on the server, correct?
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answer450
viewsIn which programming language does a Crawler/scrapper scan the DOM faster?
I developed a script in which I use the class DOMDocument PHP to make a Crawler on a third party website. The speed of script does not meet the expected goal, I would like to know in which…
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answer1360
viewsCriteria for choosing language for specific use considering performance
How to determine the most appropriate programming language for a given function? For example, for AI development Python is more efficient than Java.
performance characteristic-language software-architecture language-independentasked 6 years, 8 months ago Rodrigo S Felix 21 -
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answer295
viewsWhat is the concept of virtual machine? What are the positives and negatives?
I would like a purchase of a language that uses virtual machine and one that does not use.
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answer431
viewsWhat’s the Fortran language for?
On what occasions, nowadays, is the Fortran language used? What is its strong point and its purpose?
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answers760
viewsWhat is the difference between Array/array, Object/Object, etc?
I’m right at the beginning of my programming study and I’m not quite clear on these types with the first letter capitalized in Javascript, as Number, Array, Object, etc.. let a = Array let b = [1,…
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answers300
viewsDoubt about denial operator
Why is it not possible in Java to use the negation operator on an object like Javascript? Is this because Java is strongly typed or is there some other peculiarity? For in Javascript the negation…
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answer744
viewsHow does the "extends" and "block endblock" commands of Jinja2 work?
I’m using Jinja2 to create templates for my application. However, I was confused about two of its features. The features are: The command extends: {% extends 'pagina-exemplo.html' %} and the command…
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answer66
viewsAt what point do syntaxes in programming languages become important?
I’m in the mood to discuss the subject of when a syntax of an N programming language becomes important for the production of systems. For example: A language with simple syntax and easy to learn,…
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answers143
viewsIs there an advantage in languages that package (.dll, .class, .exe) for scripting languages (.php, .py, .js)?
There is some advantage in using languages like Java, . NET, C, C++ which generate a product in which it becomes more difficult to change? For example, if I get a .class, or a .jar, there would be…
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answer84
viewsHow to get the default value of a type in Kotlin?
I’m coming from C# and starting working with Kotlin (Android). In C#, if I want the default expected value for a type I should call it as in the example below: class Foo {} class Main { public…
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answers70
viewsHow to create Atomic Service?
Description of Atomic As operations are in memory and only are all persisted at once. If an operation fail, all operations are reversed. Below is a fictional scenario to compose the question... In…
characteristic-languageasked 5 years, 5 months ago user148754 -
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answer49
viewsWhy use local functions?
Recently it was introduced in the C# 7.0 local functions, where you can create unsigned functions or methods within other nested form methods/functions. int MinhaFormula(int x, int y) { int y = x +…
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answer77
viewsHow to use 'Native' in Java?
In Java we have the keyword native. This keyword allows Java to delegate its execution to C and/or C++ allowing it to do certain things it is not able to. Whereas I know the concepts of C and C++,…
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answer43
viewsAre both error treatments the same?
I have a great doubt regarding a visualized code regarding the handling of errors, I have 2 options for handling errors, one is being used a lot in a system that I am doing, and the other is the try…
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answers35
viewsWhat is the meaning of the term: Thread-Agnostic
What is the meaning of the term: Thread-Agnostic? It is possible to exemplify? NOTE: I checked the use of this term in a Microsoft documentation but this was not clear, Link…
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answer37
viewsWhy is Math type Object in Javascript?
In literature Math is the type "object", however, the concept of object in its structure is of the key/value type. And I do not see the object structure in Math, need to understand better.…
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answer25
viewsObjects with equal name fields using scatter notation (spread Operator)
Considering two objects (user and unit): var user = { nome: 'Nome aqui', idade: 45 }; var unidade = { nome: 'Nome da unidade', idade: 22 }; // Spread Operador var dadosGerais = { ...user, ...unidade…
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answer227
viewsError unstructurating value in function: Typeerror: Cannot read Property of Undefined
I would like to understand why this mistake happens: Uncaught TypeError: Cannot read property 'name' of undefined at logName (<anonymous>:1:24) at <anonymous>:5:1 Code: function…
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viewsHow does it work and what are the implementing context rules for Ecmascript 6 modules (ESM)?
Since Ecmascript 5, Javascript has traditionally had two execution contexts: Sloopy mode (informal name used to refer mode enabled by default in most execution contexts). Strict mode, explicitly…
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answers306
viewsWhy do builders have to have the same class name?
Is it really necessary for the constructor to have the same name as the class?
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answers773
viewsJavascript escaping backslash as I do so this does not occur!
Good morning guys, I’m in trouble I wanted a little help from you. Something is causing the content passed in the function to escape the control bar , I need them not escape because this function…
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answer113
viewsLanguage used by a VMIX application title designer
What language is used to work with Title Designer? This title works with an application that I use in my daily life at work. If possible any book that serves as a reference for study of it. Code…
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answer558
viewsPython: How are Flask dynamic routes implemented?
I started to study a little bit about web development with Flask. The framework treats dynamic components of the URL as follows: @app.route('/<comp_dinamico>') def page(comp_dinamico): #…
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answers114
viewsWhy is there the term "Private" in . NET?
Declaring variables without specifying the variable access level in C# and Visual Basic . NET ends up making the private, only the type/location where it was created can access and/or modify it.…
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answer400
viewsSeveral CRUD in the same PHP project
Hello, I have a question about structuring a project, in case it is in PHP. Let’s say I have 3 CRUD to make, one would be products, the other customer and the last order. In that case, I would have…
php characteristic-language pattern-design crud project-organizationasked 6 years, 7 months ago Luiz Miguel 27 -
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answers151
viewsHow is the Generics syntax in C# compared to Java?
I am a Java developer studying C# and came across the following difference between the two languages: https://nerdparadise.com/programming/csharpforjavadevs Generics Generics are Much Less fiddly in…
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answer85
viewsIs the PHP password_hash function a wrapper for the crypt function?
The function password_hash seems to me a wrapper that adds a high-level layer in function crypt, because it brings a default setting that could be made with crypt manually. Same with the function…
php function security-guard characteristic-language passwordasked 6 years, 4 months ago raphael 2,131 -
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answer226
viewsWhat is the code you made for Lua’s print() and io.read() function?
What is the code they made for the function print() and io.read() of the Moon, I want to make a programming language so I need to know.
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answer61
viewsHow does the declaration of a class in Python handle the external scope?
To illustrate, let’s consider this class statement: x = 1 class Foo: a = x b = [x] c = [x for _ in range(1)] print(f'x = {x}') # x = 1 print(f'Foo.a = {Foo.a}') # Foo.a = 1 print(f'Foo.b = {Foo.b}')…
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answers298
viewsHow to know when the virtual DOM and real DOM update happens?
I’m developing a project in React and noticed that using multiple setState() followed caused the surrender of my component again, for example: function MeuComponente() { console.log("Componente…
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answers58
viewsHow are programming languages created?
Sometimes when I program, it occurs to me that I am programming from a program since who interprets or compiles is a program. So I thought, how are programming languages created? Are programming…
characteristic-languageasked 4 years, 5 months ago JeanExtreme002 5,663 -
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answer295
viewsWhy is the C language considered to be a medium-level language?
The C programming language is considered a mid-level language. Why?
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viewsWhat this symbol means in C (->) language
Hello I’ve been coming across a lot with this symbol in C "->" language, without the quotation marks someone knows what it means ?
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answer32
viewsHow to return multiple parameters from a Ruby Api name with Faraday
Hello, I have a question of how to return multiple parameters of an attribute in an api. I’ve tried concatenating using | and %df but could not. It only accepts a name and prints correctly, when I…
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answer67
viewsMeasured data in a 5min range - What language to use. Prog?
Working with automatic measurements every 5 min in a database, as illustrated: I usually use Excel for analysis (sum, mean, distribution, etc.). However, due to the large volume of data, about 500…
characteristic-languageasked 10 years ago Rafael 175 -
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answer59
viewsDoes anyone know where I can find this php?
I’m looking for a file, its name is server-side-script.php so what I researched seems to be a standard translation file, I didn’t get it very well. The point is that I have a script and it comes…
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answer66
viewsRenaming methods of imports?
First I’d like to know if I can call elements that we import of methods, that is to say: import { Icon, Button, cabecalho : Header} from 'semantic-ui-react' Could I call Icon, Button or Header…
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answer93
viewsWhat would be the Zig language?
What is Zig? And what is it for? Is this a new version of Rust? 'Cause it looks a lot like Rust. It’s a clone? It’s better than C/C++?
terminology characteristic-language language-designasked 3 years, 9 months ago Matheus C. França 109 -
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viewsDeveloper Front-End
Regarding the languages Front-End programming, which ones would you recommend to me for starters? And why? Thank you very much.
characteristic-languageasked 3 years, 2 months ago uchoadev 9