Go 言語でスライスから要素を消すには
BRANK

はじめにGo 言語に躓く人の多くはスライスの操作に躓く事が多いと思います。モダンなプログラミング言語では、スライスから要素を消すのであればの様に直感的な操作ができるはずです。しかし Go 言語の場合、スライスの伸長にて発生するメモリアロケーションを append 関数と代入を使う事で透過的に行える仕組みを採用しています。例えばスライスの伸長はarr := []int{1, 2, 3} arr = append(arr, 4) この様に行います。C言語をかじった事のある方や、プログラミング言語の内部データ構造をご存じの方であれば、リストといった物が伸長の度にメモリを再確保する様な事をやっていない事はご存じだと思います。Go 言語のスライスも同様で、スライスには長さとキャパシティを持っており、キャパシティを超えない範囲で長さだけが増えていき、キャパシティを超えるとメモリが再確保されるという作りになっています。ですので、上記のコードであれば、スライス(実際は SliceHeader)が内部で持っているポインタ、長さ、キャパシティを、代入してやる事で上書きしています。スライスから要素を消すスライスの伸長と同様に、要素の削除もスライス自身を更新しなければなりません。Go…

zenn.dev
Related Topics: Go (programming language)
4 comments
  • This is a very insightful explanation about working with slices in Go! It's true that many beginners, myself included, often find slice manipulation a bit tricky at first. The way Go handles memory allocation during slice resizing, using append and assignments, is both powerful and unique compared to other modern programming languages.
    If you're as intrigued as I am about solutions blog, I highly recommend checking out my latest blog post.
    Epson printers are known for their reliable performance, but like any technology, they can sometimes encounter issues that disrupt your workflow. One common problem users face is their For more detailed troubleshooting steps, you can refer to epson printer saying offline.
    Another frustrating issue is when your Epson printer starts printing blank pages. This problem can arise due to several reasons, such as empty or improperly installed ink cartridges, clogged printheads, or software glitches.
    If the issue persists, you may need to reset your printer or update its firmware. For a comprehensive guide on fixing this problem, visit epson printer blank pages

  • Thank you for your kind words! I’m Swati, a nutritionist, and I'm glad you enjoyed the blog. If you have any health-related concerns, visit my website and explore my blog for helpful insights and solutions.

    If you're looking for Indian food to increase breast milk, several traditional foods can help boost milk production. One of the most popular choices is fenugreek, commonly used in Indian cuisine. Fenugreek seeds are known to enhance lactation and are often added to curries or consumed as a supplement. Moringa leaves, or drumstick leaves, are also highly recommended in Ayurveda for increasing breast milk supply.

    Another excellent option is ajwain (carom seeds), which is often used in Indian dishes to promote digestion and improve lactation. Ginger and garlic are also known to help stimulate milk production when included in daily meals. Additionally, ghee (clarified butter) is considered a nourishing fat that can support milk production, and it's commonly added to various Indian dishes.

    A balanced diet of Indian food to increase breast milk should also include plenty of fruits, vegetables, and whole grains to ensure overall health and nutrition for both mother and baby.

  • Doodle Jump is a true classic in mobile gaming. The simplicity of the game is what makes it so appealing. The cute character and whimsical graphics add to its charm. It's a game that I never get tired of playing.