c++ - 将 QStringList 打包成 QString 并解压回来

Question

我正在寻找一种简单且万无一失的方法来将任意 QStringList 转换为单个 QString 并返回。

QStringList fruits;
fruits << "Banana", "Apple", "Orange";
QString packedFruits = pack(fruits);
QStringList unpackFruits = unpack(packedFruits);

// Should be true 
// fruits == unpackFruits;

对于此类问题，最简单的解决方案可能是什么？

Answer 1

从QStringList到QString - QStringList::join :

Joins all the string list's strings into a single string with each element separated by the given separator (which can be an empty string).

QString pack(QStringList const& list)
{
    return list.join(reserved_separator);
}

---

从QString到QStringList - QString::split :

Splits the string into substrings wherever sep occurs, and returns the list of those strings. If sep does not match anywhere in the string, split() returns a single-element list containing this string.

QStringList unpack(QString const& string)
{
    return string.split(reserved_separator);
}