字符串

在 Move 中，没有原生的字符串类型，但有一个有用的装饰器。

module examples::strings {
    use sui::object::{Self, UID};
    use sui::tx_context::TxContext;

    // Use this dependency to get a type wrapper for UTF-8 strings
    use std::string::{Self, String};

    /// A dummy Object that holds a String type
    struct Name has key, store {
        id: UID,

        /// Here it is - the String type
        name: String
    }

    /// Create a name Object by passing raw bytes
    public fun issue_name_nft(
        name_bytes: vector<u8>, ctx: &mut TxContext
    ): Name {
        Name {
            id: object::new(ctx),
            name: string::utf8(name_bytes)
        }
    }
}

字符串字面量

在 Move 中，通过将字符串前置 b 来将其定义为字节字符串。

const IMAGE_URL: vector<u8> = b"https://api.capy.art/capys/";

let keys = vector[
            utf8(b"name"),
            utf8(b"link"),
            utf8(b"image_url"),
            utf8(b"description"),
            utf8(b"project_url"),
            utf8(b"creator"),
        ];

字符串字面量​

字符串字面量