Re: Compilation error after upgrade to 1.0.2 from 0.19

[axben]

Thanks for the answer; I'll give that a try...

Re: Compilation error after upgrade to 1.0.2 from 0.19

[kaushalmodi]

This works on the latest Nim release (should work on 1.0.2 too): 
[https://play.nim-lang.org/#ix=26Zl](https://play.nim-lang.org/#ix=26Zl)

Re: Compilation error after upgrade to 1.0.2 from 0.19

[axben]

Sorry for my late reply, and thanks for the answer. However I didn't find a 
solution for the following problem:


import nre

var
   tokens = newSeq[string]()

tokens = "abc > 
def".match(re"\s*(\S+)\s*(?:>\s*(\S.*\S))?\s*").get.captures.toSeq()  # ERROR

echo tokens[0]
tokens[0] = "ghi"


Run

The nre docs state:


Note: If you love sequtils.toSeq we have bad news for you. This library 
doesn't work with it due to documented compiler limitations."

Suppose, this is still the problem... Is there a simpler workaround than to 
enumerate the captures, get the values, and assign to tokens? - as e.g. in


caps = "abc > def".match(re"\s*(\S+)\s*(?:>\s*(\S.*\S))?\s*").get.captures

for cap in caps:
   tokens.add(cap.get)


Run

Re: Compilation error after upgrade to 1.0.2 from 0.19

[demotomohiro]

According to your error message, it seems tokens[ITEM_NAME] is 
Option[system.string] type and you are trying to add it to seq[string] type 
result variable.

You might need to read this document and learn how to get a value from an 
Option type. 
[https://nim-lang.org/docs/options.html](https://nim-lang.org/docs/options.html)

Compilation error after upgrade to 1.0.2 from 0.19

[axben]

The following code used to compile in nim 0.19:


result = newSeq[string]()
  ...
  var tokens = 
li.match(re"\s*(\S+)\s*(?:>\s*(\S.*\S))?\s*").get.captures.toSeq()
  
  # Add to the list of list values
  result.add(tokens[ITEM_NAME])


Run

Now, I get the following error:


G:\src\nim\vim256\opts.nim(281, 19) Error: type mismatch: got 
but expected one of:
proc add[T](x: var seq[T]; y: openArray[T])
  first type mismatch at position: 2
  required type for y: openArray[T]
  but expression 'tokens[0]' is of type: Option[system.string]
proc add[T](x: var seq[T]; y: T)
  first type mismatch at position: 2
  required type for y: T
  but expression 'tokens[0]' is of type: Option[system.string]
9 other mismatching symbols have been suppressed; compile with 
--showAllMismatches:on to see them


Run

As I have "been away" from nim for a relatively long period, I would appreciate 
some hint as how to remedy this...