Port of Python's difflib.SequenceMatcher class

[Bill Baxter]

Oskar Linde wrote:
> Bill Baxter wrote:
> 
>> V get(V,K)(V[K] dict, K key, V def = V.init)
>> {
>>     V* ptr = key in dict;
>>     return ptr? *ptr: def;
>> }
>>
> [snip]
>>     char[][int] i2s;
>>     i2s[1] = "Hello";
>>     i2s[5] = "There";
>>
>>     writefln( i2s.get(1, "yeh") );
>>     writefln( i2s.get(2, "default") );
>>     writefln( i2s.get(1) );
>>     writefln( i2s.get(2) );
>>
>> Too bad the template version doesn't work.
>> D doesn't seem to be able to pick out the V and K from an associative 
>> array argument.
> 
> Sorry, i missed this part. The compiler is confused by not being able to 
> tell if V should be char[] or char[3].
> 
> writefln( i2s.get(1, "yeh"[]) );
> writefln( i2s.get(2, "default"[]) );
> 
> both works. So you are right. The IFTI could perhaps be improved by 
> figuring out that both V argument types are implicitly convertible to 
> the same type.
> 
> /Oskar

Oh, ok.  So I was right, but for the wrong reason.  :-)  The compiler 
message wasn't very specific about what it didn't like, just "no match" 
was all it was willing to divulge.

These char[] char[N] conversion issues are rather annoying.


--bb