Merge DMD r304: refactor invariant => immutable --- dmd/cast.c | 2 +- dmd/declaration.c | 2 +- dmd/declaration.h | 3 +-- dmd/doc.c | 2 +- dmd/expression.c | 6 +++--- dmd/interpret.c | 4 ++-- dmd/mtype.c | 2 +- dmd/mtype.h | 2 +- dmd/parse.c | 4 ++-- dmd/struct.c | 2 +- 10 files changed, 14 insertions(+), 15 deletions(-)

int find(char[] s, dchar c)
{
    // c is a universal character
    foreach (int i, dchar c2; s)
    {
    if (c == c2)
        return i;
    }
    return -1;
}

void main()
{
    char[] hello = "hello world";
    int i = find(hello, 'w');
    assert(i == 6);
    i = find(hello, 'z');
    assert(i == -1);
}