Nik Faraday

var dict = new Dictionary<MyNullableInt, string>();
dict[null] = "hello, world!";

Console.WriteLine(dict[null]); // Output: hello, world!


struct MyNullableInt: IEquatable<MyNullableInt>, IEquatable<int?>
{
    public int? Value { get; set; }
    public bool Equals(MyNullableInt other)
    {
        return other.Value == Value;
    }

    public bool Equals(int? other)
    {
        return other == Value;
    }

    public static implicit operator MyNullableInt(int? value)
    {
        return new MyNullableInt() {Value = value};
    }

    public static implicit operator int?(MyNullableInt value)
    {
        return value.Value;
    }
    
    public override bool Equals(object? obj)
    {
        if (obj is int value)
        {
            return value == Value;
        }

        if (obj is MyNullableInt mni)
        {
            return mni.Value == Value;
        }

        return false;
    }

    public override int GetHashCode()
    {
        return Value.GetHashCode();
    }
}

char charToEncode = textToEncrypt[charIndex++];

                    byte[] colorBytes = new byte[] { originalColor.R, originalColor.G, originalColor.B };
                    for (int i = 0; i < 3; i++)
                    {
                        int bitIndex = (bitsPerChannel * i); 
                        if (bitIndex < 8)
                        {
                            colorBytes[i] = (byte)((colorBytes[i] & ~1) | ((charToEncode >> bitIndex) & 1));
                        }
                    }

for (int i = 0; i < 3; i++)
                {
                    int bitIndex = (bitsPerChannel * i);
                    if (bitIndex < 8)
                    {
                        charCode |= (byte)((encodedColor.ToArgb() >> bitIndex) & 1);
                        if (bitIndex <= 2)
                        {
                            charCode <<= bitsPerChannel;
                        }
                    }
                }

<Modal>
    <Switch>
        <Route path="/modal/presets" component={Presets} />
        <Route path="/modal/edit/:id" component={EditPhrase} />
        <Route path="/modal/create" component={CreatePhrase} />
        <Route path="/modal/delete/:id" component={DeletePhrase} />
        {/* ... */}
    </Switch>
</Modal>

function ModalComponent() {
    return (
        <Modal>
            <Switch>
                <Route path="/modal/presets" component={Presets} />
                <Route path="/modal/edit/:id" component={EditPhrase} />
                <Route path="/modal/create" component={CreatePhrase} />
                <Route path="/modal/delete/:id" component={DeletePhrase} />
                {/* ... */}
            </Switch>
        </Modal>
    );
}

function Presets() {
    const phrases = ... // получите фразы

    return (
        <div>
            {phrases.map(phrase => (
                <div key={phrase.id}>
                    {phrase.text}
                    <Link to={`/modal/edit/${phrase.id}`}>Редактировать</Link>
                </div>
            ))}
            <Link to="/modal/create">Создать новую фразу</Link>
        </div>
    );
}