[erlang-questions] Print Date

[Lucky]

Hi Erlang Developers'

I'm stuck here, I am trying to print date which is in this format "2012/04/23" using io:format/2, but I want it to be printed like this: 2012/04/23 without invited commas, how do I go about resolving this?

Kindest Regards,
Lucky

To God Alone be the Glory...Amen.
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[Artem Teslenko]

Use ~s instead of ~p in the format argument of io:format/2:

1> io:format("~s~n", ["2012/04/23"]).
2012/04/23

[Fredrik Andersson]

Here is a good resource on learning Erlang, please read it http://learnyousomeerlang.com/content

When you know what function you need to use but want to change some minor behaviour check the documentation for it http://erldocs.com/ has a good search function for finding the documentation for most Erlang functions.

[Håkan Nilsson]

If you run into any more problems I would recommend that you read http://www.erldocs.com before asking the mailing list. 

--

Håkan Nilsson Developer Engineering +46 70 001 27 07 klarna.se		Klarna AB Norra Stationsgatan 61 11343 Stockholm +46 8 120 120 00

[Richard O'Keefe]

On 15/11/2012, at 5:06 AM, Lucky wrote:

> Hi Erlang Developers'
>
> I'm stuck here, I am trying to print date which is in this format "2012/04/23" using io:format/2, but I want it to be printed like this: 2012/04/23 without invited commas, how do I go about resolving this?

READ THE MANUAL!

Specifically http://www.erlang.org/doc/man/io.html#format-2

Ask yourself, "how did those quotation marks get there? What did I to that
made io:format/2 think I was ASKING for them?"

It looks to me as though you used ~p when you meant ~s,
and in particular it looks to me as though you very likely
just want to do
io:put_chars(IoDevice, "2012/04/23")
and not involve io:format/2 at all. (Like in C you'd use fputs() rather
than fprintf().)

1> io:format(standard_io, "~p~n", ["2012/04/23"]).
"2012/04/23"
ok
2> io:format(standard_io, "~s~n", ["2012/04/23"]).
2012/04/23
ok
3> io:put_chars(standard_io, "2012/04/23"), io:nl(standard_io).
2012/04/23
ok

Before posting one more question, PLEASE try reading the manual.

[Henrik Nord]

Hi

Why not encourage users of Erlang, and just help them out, or ignore
those questions that you deem to "easy" to be allowed to be asked on the
mailing list.

There is really no reason to shout at a potential Erlang user of the
year, just because he/she is just starting out with the language and
does not know the ropes yet. Maybe its her first language? first time
trying to program anything?, do you want to be responsible for scaring
users away from the community?

BE NICE ON THE MAILING LIST PLEASE


To Lucky:
www.erlang.org contains a lot of information including, but not limited
to, the documentation.
http://www.erlang.org/erldoc

There is also http://learnyousomeerlang.com/ for a guide and a first
look at the language.

Erlang solutions also provides courses both E-lerning and classroom

https://www.erlang-solutions.com/services/training

[Thomas Lindgren]

Here's my honest advice to the guy who has been sending us his homework: For these kinds of problems, ask your tutor. 

And as a bonus, here's something that may help homework guy out, hopefully before he will be inflicted on the world as a contractor: http://catb.org/~esr/faqs/smart-questions.html

Best,

Thomas

[Tony Rogvall]

+1 

But maybe Lucky is some new kind of bot ?

/Tony

"Installing applications can lead to corruption over time. Applications gradually write over each other's libraries, partial upgrades occur, user and system errors happen, and minute changes may be unnoticeable and difficult to fix"