並び順

ブックマーク数

期間指定

  • から
  • まで

1 - 40 件 / 71件

新着順 人気順

list of array program in javaの検索結果1 - 40 件 / 71件

  • 【2020年】CTF Web問題の攻撃手法まとめ - こんとろーるしーこんとろーるぶい

    はじめに 対象イベント 読み方、使い方 Remote Code Execution(RCE) 親ディレクトリ指定によるopen_basedirのバイパス PHP-FPMのTCPソケット接続によるopen_basedirとdisable_functionsのバイパス JavaのRuntime.execでシェルを実行 Cross-Site Scripting(XSS) nginx環境でHTTPステータスコードが操作できる場合にCSPヘッダーを無効化 GoogleのClosureLibraryサニタイザーのXSS脆弱性 WebのProxy機能を介したService Workerの登録 括弧を使わないXSS /記号を使用せずに遷移先URLを指定 SOME(Same Origin Method Execution)を利用してdocument.writeを順次実行 SQL Injection MySQ

      【2020年】CTF Web問題の攻撃手法まとめ - こんとろーるしーこんとろーるぶい
    • 関数型プログラミングはまずは純粋関数型言語を用いて、考え方から理解しよう

      この記事は、関数型プログラミングはまず考え方から理解しよう の記事を純粋関数型言語Elmで書き換え、一部の文章について批判的に言及させていただいた記事になります。この記事を書こうと思ったきっかけとしては、今回参考にさせていただきた記事が過去に書かれたものにも関わらず、今に渡っても見られていそうなこと。未だにパラダイムの理解に関する誤解が多く散見されること。改めて純粋関数型言語の実用性・有用性について、見直されるべきだと思い、この記事を執筆させていただきました。 次のステップアップ記事は、[超入門] FizzBuzzで考える関数型プログラミング学習を純粋関数型言語でやる理由です。 はじめに、この記事の主張を結論としてまとめておきます。 対比すべきは、関数型プログラミングとオブジェクト指向プログラミングではなく、関数型プログラミングと手続き型プログラミングである 関数型プログラミングの考えを学

        関数型プログラミングはまずは純粋関数型言語を用いて、考え方から理解しよう
      • 転置インデックスの圧縮技法

        転置インデックスは、検索エンジンの実装において、中心的な役割を果たすデータ構造である。 転置インデックスのデータ構造とアルゴリズムは、クエリ処理アルゴリズムとともに、検索エンジンの性能に直結する。とくに大規模な検索エンジンにおいては、キャッシュ効率を高めてクエリ処理を高速化するために、転置インデックスの圧縮は必要不可欠となっている。 この記事では、転置インデックス、とくにポスティングリストの圧縮について、近年の手法を簡単にまとめる。 目次 転置インデックスの基本 転置インデックスのデータ構造と特性 転置インデックスのアクセスパターン 近年のインデックス圧縮技法 Variable-Byte Family VByte Varint-GB Varint-G8IU Masked-VByte Stream-VByte Opt-VByte Simple Family Simple9 Simple16

          転置インデックスの圧縮技法
        • GitHub - modelcontextprotocol/servers: Model Context Protocol Servers

          Official integrations are maintained by companies building production ready MCP servers for their platforms. 21st.dev Magic - Create crafted UI components inspired by the best 21st.dev design engineers. 2slides - An MCP server that provides tools to convert content into slides/PPT/presentation or generate slides/PPT/presentation with user intention. ActionKit by Paragon - Connect to 130+ SaaS inte

            GitHub - modelcontextprotocol/servers: Model Context Protocol Servers
          • OOP: the worst thing that happened to programming

            > BTC: bc1qs0sq7agz5j30qnqz9m60xj4tt8th6aazgw7kxr ETH: 0x1D834755b5e889703930AC9b784CB625B3cd833E USDT(Tron): TPrCq8LxGykQ4as3o1oB8V7x1w2YPU2o5n Ton: UQAtBuFWI3H_LpHfEToil4iYemtfmyzlaJpahM3tFSoxomYQ Doge: D7GMQdKhKC9ymbT9PtcetSFTQjyPRRfkwTdismiss OOP: the worst thing that happened to programming [2/24/2025] In this article, we will try to understand why OOP is the worst thing that happened to prog

              OOP: the worst thing that happened to programming
            • ソースコード & ドキュメントに対応したGraph RAGの実装(Tree-sitter + LightRAG)

              (module (function_definition (identifier) # ← ここに関数名「sample_func」が含まれます (parameters) (block (expression_statement (call (identifier) (argument_list (string)))))) (expression_statement (call (identifier) (argument_list)))) ノードが色々取れましたが、「function_definition」が関数、その子である「identifier」が関数名を表すため、 function_definition == 子ノード ==> identifier となっている箇所を探索すれば抽出できます(関数ではあっても「lambda」など異なる場合もあります)。 今回は上記のようにTree-si

                ソースコード & ドキュメントに対応したGraph RAGの実装(Tree-sitter + LightRAG)
              • Claude Mythos Preview \ red.anthropic.com

                Assessing Claude Mythos Preview’s cybersecurity capabilities April 7, 2026 Nicholas Carlini, Newton Cheng, Keane Lucas, Michael Moore, Milad Nasr, Vinay Prabhushankar, Winnie Xiao Hakeem Angulu, Evyatar Ben Asher, Jackie Bow, Keir Bradwell, Ben Buchanan, David Forsythe, Daniel Freeman, Alex Gaynor, Xinyang Ge, Logan Graham, Kyla Guru, Hasnain Lakhani, Matt McNiece, Mojtaba Mehrara, Renee Nichol, A

                • Understanding inheritance and other limitations in Rust - LogRocket Blog

                  Editor’s note: This Rust guide was updated on 3 Aug, 2022 to include information about doubly linked lists and borrowing things that aren’t static in async code. As a moderator of the Rust subreddit, I regularly happen upon posts about developers’ attempts to transpose their respective language paradigms to Rust, with mixed results and varying degrees of success. In this guide, I’ll describe some

                    Understanding inheritance and other limitations in Rust - LogRocket Blog
                  • Changing std::sort at Google’s Scale and Beyond

                    TL;DR; We are changing std::sort in LLVM’s libcxx. That’s a long story of what it took us to get there and all possible consequences, bugs you might encounter with examples from open source. We provide some benchmarks, perspective, why we did this in the first place and what it cost us with exciting ideas from Hyrum’s Law to reinforcement learning. All changes went into open source and thus I can

                      Changing std::sort at Google’s Scale and Beyond
                    • I have written a JVM in Rust

                      Lately I've been spending quite a bit of time learning Rust, and as any sane person would do, after writing a few 100 lines programs I've decided to take on something a little bit more ambitious: I have written a (toy) Java Virtual Machine in Rust. 🎉 With a lot of originality, I have called it rjvm. The code is available on GitHub. I want to stress that this is a toy JVM, built for learning purpo

                      • Golang Mini Reference 2022: A Quick Guide to the Modern Go Programming Language (REVIEW COPY)

                        Golang Mini Reference 2022 A Quick Guide to the Modern Go Programming Language (REVIEW COPY) Harry Yoon Version 0.9.0, 2022-08-24 REVIEW COPY This is review copy, not to be shared or distributed to others. Please forward any feedback or comments to the author. • feedback@codingbookspress.com The book is tentatively scheduled to be published on September 14th, 2022. We hope that when the release da

                        • Weird Lexical Syntax

                          I just learned 42 programming languages this month to build a new syntax highlighter for llamafile. I feel like I'm up to my eyeballs in programming languages right now. Now that it's halloween, I thought I'd share some of the spookiest most surprising syntax I've seen. The languages I decided to support are Ada, Assembly, BASIC, C, C#, C++, COBOL, CSS, D, FORTH, FORTRAN, Go, Haskell, HTML, Java,

                            Weird Lexical Syntax
                          • AST vs. Bytecode: Interpreters in the Age of Meta-Compilation

                            233 AST vs. Bytecode: Interpreters in the Age of Meta-Compilation OCTAVE LAROSE, University of Kent, UK SOPHIE KALEBA, University of Kent, UK HUMPHREY BURCHELL, University of Kent, UK STEFAN MARR, University of Kent, UK Thanks to partial evaluation and meta-tracing, it became practical to build language implementations that reach state-of-the-art peak performance by implementing only an interprete

                            • Parsing SQL - Strumenta

                              The code for this tutorial is on GitHub: parsing-sql SQL is a language to handle data in a relational database. If you worked with data you have probably worked with SQL. In this article we will talk about parsing SQL. It is in the same league of HTML: maybe you never learned it formally but you kind of know how to use it. That is great because if you know SQL, you know how to handle data. However

                                Parsing SQL - Strumenta
                              • A new way to bring garbage collected programming languages efficiently to WebAssembly · V8

                                Show navigation A recent article on WebAssembly Garbage Collection (WasmGC) explains at a high level how the Garbage Collection (GC) proposal aims to better support GC languages in Wasm, which is very important given their popularity. In this article, we will get into the technical details of how GC languages such as Java, Kotlin, Dart, Python, and C# can be ported to Wasm. There are in fact two m

                                • Kalyn: a self-hosting compiler for x86-64

                                  Over the course of my Spring 2020 semester at Harvey Mudd College, I developed a self-hosting compiler entirely from scratch. This article walks through many interesting parts of the project. It’s laid out so you can just read from beginning to end, but if you’re more interested in a particular topic, feel free to jump there. Or, take a look at the project on GitHub. Table of contents What the pro

                                  • Wasm core dumps and debugging Rust in Cloudflare Workers

                                    Wasm core dumps and debugging Rust in Cloudflare Workers2023-08-14 A clear sign of maturing for any new programming language or environment is how easy and efficient debugging them is. Programming, like any other complex task, involves various challenges and potential pitfalls. Logic errors, off-by-ones, null pointer dereferences, and memory leaks are some examples of things that can make software

                                      Wasm core dumps and debugging Rust in Cloudflare Workers
                                    • The life and times of an Abstract Syntax Tree

                                      You’ve reached computer programming nirvana. Your journey has led you down many paths, including believing that God wrote the universe in LISP, but now the truth is clear in your mind: every problem can be solved by writing one more compiler. It’s true. Even our soon-to-be artificially intelligent overlords are nothing but compilers, just as the legends foretold. That smart contract you’ve been wr

                                        The life and times of an Abstract Syntax Tree
                                      • April 2023 (version 1.78)

                                        Update 1.78.1: The update addresses this security issue. Update 1.78.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the April 2023 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Accessibility improvements - Better scre

                                          April 2023 (version 1.78)
                                        • The Go Programming Language and Environment – Communications of the ACM

                                          Go is a programming language created at Google in late 2007 and released as open source in November 2009. Since then, it has operated as a public project, with contributions from thousands of individuals and dozens of companies. Go has become a popular language for building cloud infrastructure: Docker, a Linux container manager, and Kubernetes, a container deployment system, are core cloud techno

                                          • Go 1.19 Release Notes - The Go Programming Language

                                            Introduction to Go 1.19 The latest Go release, version 1.19, arrives five months after Go 1.18. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language There is only one small change to the language, a

                                              Go 1.19 Release Notes - The Go Programming Language
                                            • 0.10.0 Release Notes ⚡ The Zig Programming Language

                                              Tier 4 Support § Support for these targets is entirely experimental. If this target is provided by LLVM, LLVM may have the target as an experimental target, which means that you need to use Zig-provided binaries for the target to be available, or build LLVM from source with special configure flags. zig targets will display the target if it is available. This target may be considered deprecated by

                                              • So, What's So Special About The Mill Scala Build Tool?

                                                So, What's So Special About The Mill Scala Build Tool? Mill is a Scala build tool that offers an alternative to the venerable SBT toolchain. Mill aims for simplicity by reusing concepts you are already familiar with, borrowing ideas from Functional Programming and modern tools like Bazel. Feedback from users of Mill is often surprisingly positive, with people saying it is "intuitive" or feels "jus

                                                • Functors and Monads For People Who Have Read Too Many "Tutorials" - iRi

                                                  Celebrating Over 10 Years Of Being Too Lazy To Pick A Tagline Title is literally true. This may not be the best place to learn about these concepts for the first time, because I'm going to focus on knocking down the misconceptions about them. Then again, it may not be the worst place, for the same reason. I had promised myself I would not add to the pile of functor or monad "tutorials", but I've b

                                                  • JEP 425: Virtual Threads (Preview)

                                                    Summary Introduce virtual threads to the Java Platform. Virtual threads are lightweight threads that dramatically reduce the effort of writing, maintaining, and observing high-throughput concurrent applications. This is a preview API. Goals Enable server applications written in the simple thread-per-request style to scale with near-optimal hardware utilization. Enable existing code that uses the j

                                                    • Fantastic Learning Resources

                                                      Aug 6, 2023 People sometimes ask me: “Alex, how do I learn X?”. This article is a compilation of advice I usually give. This is “things that worked for me” rather than “the most awesome things on earth”. I do consider every item on the list to be fantastic though, and I am forever grateful to people putting these resources together. Learning to Code I don’t think I have any useful advice on how to

                                                      • Manuel Cerón

                                                        Last year I finally decided to learn some Rust. The official book by Steve Klabnik and Carol Nichols is excellent, but even after reading it and working on some small code exercises, I felt that I needed more to really understand the language. I wanted to work on a small project to get some hands-on experience, but most of my ideas didn’t feel very well suited for Rust. Then I started reading the

                                                        • Frozen String Literals: Past, Present, Future?

                                                          If you are a Rubyist, you’ve likely been writing # frozen_string_literal: true at the top of most of your Ruby source code files, or at the very least, that you’ve seen it in some other projects. Based on informal discussions at conferences and online, it seems that what this magic comment really is about is not always well understood, so I figured it would be worth talking about why it’s there, w

                                                          • Hacker News folk wisdom on visual programming

                                                            I’m a fairly frequent Hacker News lurker, especially when I have some other important task that I’m avoiding. I normally head to the Active page (lots of comments, good for procrastination) and pick a nice long discussion thread to browse. So over time I’ve ended up with a good sense of what topics come up a lot. “The Bay Area is too expensive.” “There are too many JavaScript frameworks.” “Bootcam

                                                              Hacker News folk wisdom on visual programming
                                                            • V Language Review (2022)

                                                              V is a programming language promising to be “Simple, fast, safe, compiled. For developing maintainable software.” V has a controversial past but what is the state of V in 2022? Is V worth checking out? In this post, we’ll take a look at V as it exists in May 2022. TLDR Read the summary Rules of engagement I’ll be using the current version of V built from git which is 50ab2cfd1ae02d4f4280f38c60b8db

                                                              • Ruby's Hash is a Swiss-Army Knife

                                                                When I used to program in C# (or even Java before that), one of the topics that always puzzled me was when to use which class. There are literally thousands and thousands of classes in the core language, framework, and the standard library. For example, here are the five types that implement the IDictionary interface in C#. HashtableSortedListSortedList<TKey, TValue>Dictionary<TKey, TValue>Concurr

                                                                  Ruby's Hash is a Swiss-Army Knife
                                                                • Sayonara, C++, and hello to Rust!

                                                                  This past May, I started a new job working in Rust. I was somewhat skeptical of Rust for a while, but it turns out, it really is all it’s cracked up to be. As a long-time C++ programmer, and C++ instructor, I am convinced that Rust is better than C++ in all of C++’s application space, that for any new programming project where C++ would make sense as the programming language, Rust would make more

                                                                  • Unicode is harder than you think · mcilloni's blog

                                                                    Reading the excellent article by JeanHeyd Meneide on how broken string encoding in C/C++ is made me realise that Unicode is a topic that is often overlooked by a large number of developers. In my experience, there’s a lot of confusion and wrong expectations on what Unicode is, and what best practices to follow when dealing with strings that may contain characters outside of the ASCII range. This a

                                                                    • Why We Use Julia, 10 Years Later

                                                                      Exactly ten years ago today, we published "Why We Created Julia", introducing the Julia project to the world. At this point, we have moved well past the ambitious goals set out in the original blog post. Julia is now used by hundreds of thousands of people. It is taught at hundreds of universities and entire companies are being formed that build their software stacks on Julia. From personalized me

                                                                        Why We Use Julia, 10 Years Later
                                                                      • madhadron - The seven programming ur-languages

                                                                        I regularly hear people asking which programming language to learn, and then reeling off a list of very similar languages (“Should I learn Java, C#, C++, Python, or Ruby?”). In response I usually tell them that it doesn’t really matter, as long as they get started. There are fundamentals behind them. What do I mean when I say fundamentals? If you have an array or list of items and you’re going to

                                                                        • 21st Century C++ – Communications of the ACM

                                                                          It is now 45+ years since C++ was first conceived. As planned, it evolved to meet challenges, but many developers use C++ as if it was still the previous millennium. This is suboptimal from the perspective of ease of expressing ideas, performance, reliability, and maintainability. Here, I present the key concepts on which performant, type safe, and flexible C++ software can be built: resource mana

                                                                          • Go 1.19 Release Notes - The Go Programming Language

                                                                            Introduction to Go 1.19 The latest Go release, version 1.19, arrives five months after Go 1.18. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language There is only one small change to the language, a

                                                                              Go 1.19 Release Notes - The Go Programming Language
                                                                            • Patterns in confusing explanations

                                                                              August 19, 2021 Hello! Recently I’ve been thinking about why I explain things the way I do. The usual way I write is: Try to learn a topic Read a bunch of explanations that I find confusing Eventually understand the topic Write an explanation that makes sense to me, to help others So why do I find all these explanations so confusing? I decided to try and find out! I came up with a list of 13 patte

                                                                              • When Is WebAssembly Going to Get DOM Support? - ACM Queue

                                                                                July 2, 2025 Volume 23, issue 3 PDF When Is WebAssembly Going to Get DOM Support? Or, how I learned to stop worrying and love glue code Daniel Ehrenberg Is WebAssembly (Wasm) really ready for production usage in web applications, even though that usage requires integration with a web page and the APIs used to manipulate it, such as the DOM? Simultaneously, the answer to this question is that "Wasm

                                                                                • What's New in Emacs 28.1?

                                                                                  Try Mastering Emacs for free! Are you struggling with the basics? Have you mastered movement and editing yet? When you have read Mastering Emacs you will understand Emacs. It’s that time again: there’s a new major version of Emacs and, with it, a treasure trove of new features and changes. Notable features include the formal inclusion of native compilation, a technique that will greatly speed up y