Feature #9099: Train emoji lambda operator

• Status: Feedback
• Priority: Normal
• Assignee: -
• Target version: -

[charliesome (Charlie Somerville)]

Matz mentioned during the 'Questions for Matz' section at RubyConf 2013 that he would like to the train emoji as an alternative to the stabby lambda operator.

I have implemented this and attached the patch.

Example code:

fn =

[charliesome (Charlie Somerville)]

• File train.rb train.rb added

Redmine truncated the sample code due to the use of emoji, so I have attached a sample file instead.

[duerst (Martin Dürst)]

I had a look at https://bugs.ruby-lang.org/attachments/4038/train.patch.
Catching the 'train' emoji should be handled in the lexer, not in the
parser.

But first you have to make sure that the source file is actually UTF-8.

Also, when I looked at you first mail, I saw something that looked close
to a λ. Is that why this symbol was choosen?

Please note that there is nothing in the Unicode standard that says that
the symbol has to look like that, it can be a train looked at from the
front (see e.g. http://www.iemoji.com/view/emoji/847/places/train), or
any other representation of a train.

Also, as currently emoji characters are not that well supported, there
is quite some chance that the character gets rendered as a box or a
question mark, or not at all.

Regards, Martin.

On 2013/11/11 7:05, charliesome (Charlie Somerville) wrote:

Issue #9099 has been updated by charliesome (Charlie Somerville).

File train.rb added

Redmine truncated the sample code due to the use of emoji, so I have attached a sample file instead.

Feature #9099: Train emoji lambda operator
https://bugs.ruby-lang.org/issues/9099#change-42850

Author: charliesome (Charlie Somerville)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:

Matz mentioned during the 'Questions for Matz' section at RubyConf 2013 that he would like to the train emoji as an alternative to the stabby lambda operator.

I have implemented this and attached the patch.

Example code:

fn =

[nobu (Nobuyoshi Nakada)]

• File 0001-keywords-parse.y-keyord-lambda.patch 0001-keywords-parse.y-keyord-lambda.patch added

Just implemented with λ.

[matz (Yukihiro Matsumoto)]

• Category set to Joke
• Status changed from Open to Feedback

Currently I have no idea to include any method not operator whose name contains non-ascii characters in the core libraries.

Matz.

[duerst (Martin Dürst)]

On 2013/11/11 17:52, matz (Yukihiro Matsumoto) wrote:

Issue #9099 has been updated by matz (Yukihiro Matsumoto).

Category set to Joke
Status changed from Open to Feedback

Currently I have no idea to include any method not operator whose name contains non-ascii characters in the core libraries.

This may imply that you have some ideas about implementing some
operators containing non-ascii characters. Can you confirm or deny?

Regards, Martin.

Matz.

[matz (Yukihiro Matsumoto)]

It's fundamentally denial.

Matz.

[mame (Yusuke Endoh)]

For those who cannot see it: U+1F685

http://www.unicode.org/charts/PDF/U1F680.pdf

--
Yusuke Endoh [e-mail]

@mame (Yusuke Endoh): OMG there are crazier people than me out there.