Richard,
Thanks for your reply. But I still cannot know how to write the stream. For
the following sample:
Source.from(Arrays.asList("H", "2", "3",
"4")).....to(Sink.foreach(System.out::println));
could you kindly write the stream for me so that it will print:
H, 2A, 3A, 4A
Thanks again!
Guofeng
For the following sample:
On Fri, Apr 15, 2016 at 1:35 PM, Richard Rodseth <rrods...@gmail.com> wrote:
> Take a look at prefixAndTail
>
>
> http://doc.akka.io/docs/akka/2.4.4/scala/stream/stages-overview.html#prefixAndTail
>
> On Thu, Apr 14, 2016 at 7:42 AM, Guofeng Zhang <guofen...@gmail.com>
> wrote:
>
>> Hi,
>>
>> I have a csv file like the following:
>> ID,Product name,Price
>> 1111,Sleeve,57.97
>> 2222,Jacket,83.44
>> ....
>>
>> I want to transform it to:
>> ID,Product name,Price
>> 1111,Sleeve,579.7
>> 2222,Jacket,834.4
>>
>> That is, the head line (the first line) is not changed, but the prices in
>> other lines are multiplied by 10. The result is then stored to another file.
>>
>> Because there is the head line that is different to the other lines, so I
>> do not know how to use akka-stream to transform it.
>>
>> Your help is appreciated.
>>
>> Thanks.
>>
>> Guofeng
>>
>>
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