Is UTF-16 a problem?

[Martin]

Hi,

in Dart strings are UTF-16 because of Webkit. While on the client side (browser) this might be beneficial, on the server side this introduces unnecessary overhead. HTTP requests, database strings, ... are converted to UTF-16 and need to be converted back to UTF-8 for output.

Does that degrade performance noticeably? Does the Dart VM do anything to avoid converting to UTF-16 and back?

Martin

[Austin Cummings]

I believe in the Dart VM they do optimizations for one byte strings (UTF-8). I am not sure though.

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[Lasse R.H. Nielsen]

Dart's one-byte strings are Latin-1 strings, not UTF-8. Is just said space internally when all the code units of a string are <256.

/L

[Randal L. Schwartz]

>>>>> "Nielsen" == 'Lasse R H Nielsen' via Dart Misc <mi...@dartlang.org> writes:

Nielsen> Dart's one-byte strings are Latin-1 strings, not UTF-8. Is just
Nielsen> said space internally when all the code units of a string are
Nielsen> <256.

Latin-1? Why not ASCII, which has the advantage that it can't be
confused with an improperly marked UTF-8 string, since every ASCII
string is automatically a UTF-8 string.

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[Alan Knight]

These are internal VM data structures. I don't think "improperly marked" is something that can happen.