Re: StringBuilder for byte[]

From:

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>

Newsgroups:

comp.lang.java.programmer

Date:

Fri, 18 Jan 2013 20:27:57 -0500

Message-ID:

<50f9f6a1$0$285$14726298@news.sunsite.dk>

On 1/18/2013 8:07 PM, Lew wrote:

Arne Vajh?j wrote:

Lew wrote:

Roedy Green:

It would be a fairly simple task to write a StringBuilder or FastCat
that worked with byte[]. I wonder if such a beast exists already, or
if there would be much use for it.

A better choice would be
http://docs.oracle.com/javase/7/docs/api/java/io/CharArrayWriter.html

But wasn't the point to work with byte[] instead of String/char[] ?

Was it?

He said that the task is "to write a StringBuilder or FastCat".

Not really.

That was the first part of what he said that you just arbitrarily truncated.

I don't know what a
"FastCat" is, but a 'StringBuilder' needs encodings.

True. But byte[] does not.

So 'byte[]' is a case of being
focused on implementation rather than goal,

It asked for a StringBuilder for byte[]. That is a goal.

It seems weird to me to assume that he want something else than
what he asked for.

So I have to ask, if your goal is to build a 'String', why would you use 'byte' when 'char'
is for that purpose?

There are not really any indication that he want to build a String.

There is every indication that he want to build a byte array.

When somebody ask for "Type1Something for Type2" it seems
natural to assume that they want "Type2Something" and a
ByteArrayBuilder would produce a byte array.

I presume to conclude that Roedy screwed up on that one.

It happens.

But I doubt it is the case this time.

Arne