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Feature #461

New keyword "|->"? (same as "return")

Added by John Abbott over 10 years ago. Updated almost 2 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
John Abbott
Category:
Parser/Interpreter
Target version:
CoCoA-5.4.2
Start date:
09 Mar 2014
Due date:
% Done:

100%

Estimated time:
Spent time:
1.10 h

Description

Here is an idea (silly?)

We could add the new keyword |-> which has the same semantics as Return. This would be handy inside short anonymous functions:

fn := Func (X) Return X^2-2; EndFunc;

could become
fn := Func (X) |-> X^2-2 EndFunc;

It's not a great improvement, but at least it is conceptually simple :-)

History

#1 Updated by Anna Maria Bigatti about 10 years ago

  • Target version set to CoCoA-5.1.0 Easter14

#2 Updated by John Abbott about 10 years ago

  • Target version changed from CoCoA-5.1.0 Easter14 to CoCoA-5.1.1 Seoul14

#3 Updated by John Abbott almost 10 years ago

  • Target version changed from CoCoA-5.1.1 Seoul14 to CoCoA-5.?.?

#4 Updated by Anna Maria Bigatti almost 10 years ago

  • Subject changed from New keyword? to New keyword "|->"? (same as "return")
  • Target version changed from CoCoA-5.?.? to CoCoA-5.1.1 Seoul14

#5 Updated by John Abbott almost 10 years ago

  • Target version changed from CoCoA-5.1.1 Seoul14 to CoCoA-5.?.?

#6 Updated by John Abbott almost 2 years ago

  • Target version changed from CoCoA-5.?.? to CoCoA-5.4.2

The idea is fairly nice, but does not bring much benefit.
I do not relish the idea of modifying the parser/interpreter unless truly necessary.

So I suggest rejecting this proposal: too much work for too little benefit.

#7 Updated by Anna Maria Bigatti almost 2 years ago

John Abbott wrote:

The idea is fairly nice, but does not bring much benefit.
I do not relish the idea of modifying the parser/interpreter unless truly necessary.

So I suggest rejecting this proposal: too much work for too little benefit.

That rang some bell, so I checked: this is similar to Macaulay2:

A function can be created with the arrow operator, -> .

i19 : f = i -> i^3

the structure is anyway quite different, so this might be more confusing than handy.

I agree on rejecting.

#8 Updated by Anna Maria Bigatti almost 2 years ago

  • Status changed from New to Rejected

#9 Updated by John Abbott almost 2 years ago

  • Assignee set to John Abbott
  • % Done changed from 0 to 100

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