On Sunday, 13 October 2013 at 13:40:21 UTC, Sönke Ludwig wrote:
Am 13.10.2013 15:25, schrieb nickles:
Ok, if my understandig is wrong, how do YOU measure the length
of a string?
Do you always use count(), or is there an alternative?
The thing is that even count(), which gives you the number of
*code points*, isn't necessarily what is desired - that is, the
number of actual display characters. UTF is quite a complex
beast and doing any operations on it _correctly_ generally
requires a lot of care. If you need to do these kinds of
operations, I would highly recommend to read up the basics of
UTF and Unicode first (quick overview on Wikipedia:
<http://en.wikipedia.org/wiki/Unicode#Mapping_and_encodings>).
arr.length is meant to be used in conjunction with array
indexing and slicing (arr[...]) and its value is consistent for
all string and array types for this purpose.
I recently discovered a bug in my program. If you take the letter
"é" for example (Linux, Ubuntu 12.04), std.utf.count() returns 1
and .length returns 2. I needed the length to slice the string at
a given point. Using .length instead of std.utf.count() fixed the
bug.
