Language Selection

English French German Italian Portuguese Spanish

Programming Leftovers

Filed under
Development

  • Things Are Getting Rusty In Kernel Land | Hackaday

    The other answer is that Rust is an easy fit with C code and kernel programming. Rust does it’s magic in the compiler. The code you write is what actually runs, without an interpreter or garbage collection trying to be helpful. Rust hasn’t overdosed on Object Oriented patterns, but meshes nicely with the C-style structs already used in the kernel. Even the stack model is very similar to C.

    There’s one problem with Rust’s memory-safe guarantee — it’s impossible to write a kernel that is formally memory-safe. A kernel has to write to unallocated memory, do weird pointer math, and other seemingly bizarre things to actually make our computers work. This doesn’t work well with a language that tries to guarantee that memory manipulations are safe. How do you write kernel code with Rust, then? Rust has added the unsafe keyword, allowing use of direct memory access and other such techniques that don’t work with Rusts’s memory guarantees. Keep the potential problems together, and it makes auditing easier.

    There’s at least one other language that may come to mind as an incremental update to C that tries to do some of these things: C++. Surely this would have been even a better fit, right? Kernel devs have some strong feelings about that idea. To put it gently, none of the improvements in C++ are useful in the context of the kernel, and some of the other changes just get in the way.

  • How to Get User Input in Java

    In programming languages, taking the user’s input is an essential task. In Java, multiple predefined classes are used to get the user’s input such as Scanner, BufferedReader, and Console class. All these classes utilizes various methods for handling input such as nextLine(), readLine(), etc.

  • How to convert string to int in Java

    Converting one data type to other data types is a common task in the prommer’s life. If we talk about the string to int conversion it can be achieved using two build-in methods i.e., Integer.ParseInt() and Integer.ValueOf(). Usually, we perform the string to int conversion when we have to execute mathematical operations over the strings containing numeric data.

  • Array of Pairs in C++

    The term pair refers to the combination of two values of different types. Pair allows you to keep two separate objects as a single unit. It is mostly utilized when storing tuples.

    The pair container is a basic container declared in the utility header that consists of two collected data or objects. The first element in the pair container is referred to as ‘first,’ while the second element is referred to as ‘second’, with the order fixed as (first, second).

    By default, the object of a specified array is allocated in a map or hash map of the type ‘pair,’ with all of the ‘first’ elements having unique keys paired with their ‘second’ value objects. To obtain the elements, we use the variable’s name followed by the dot operator and by the first or second keywords.

  • Dart Hello World

    Dart is a Google-developed static programming language. It allows for client-side and server-side application development. As per the GitHub adoption index, it has become the most widely used programming language because it incorporates the flutter toolkit. However, the Flutter Framework is commonly utilized in developing Android applications, iOS applications, IoT (Internet of Things), and online applications. Dart has a high syntactic and semantic similarity to JavaScript, Java, CPP, and python. It is a vibrant object-oriented language with lexical scope and closure. Dart was released in 2011, but it gained prominence after 2015 with the release of Dart 2.0.

    In this article, we will look at the basic representation of Dart syntax and how to print hello world in the dart programming language. The fundamental framework of Dart programming will be demonstrated here.