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| author | Andreas Rumpf <rumpf_a@web.de> | 2016-11-01 09:45:37 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2016-11-01 09:45:37 +0100 |
| commit | 4884a56e38e97eecb9e780cdb7c8f876dd771798 (patch) | |
| tree | 7b40955255a60338326e2c23210f9b97d8c2a999 | |
| parent | d4c35da4700c1d2de4dc18e18b065b9b0108835a (diff) | |
| parent | 55b28f86e1fe0b7dc151f93692a987b4a48e98ac (diff) | |
| download | Nim-4884a56e38e97eecb9e780cdb7c8f876dd771798.tar.gz | |
Merge pull request #4980 from jlp765/tostring
Add nill value handling for seq/sets to system.CollectionToString()
| -rw-r--r-- | lib/system.nim | 3 | ||||
| -rw-r--r-- | tests/stdlib/tnilecho.nim | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/lib/system.nim b/lib/system.nim index 65304941d..9925079c7 100644 --- a/lib/system.nim +++ b/lib/system.nim @@ -2334,7 +2334,8 @@ proc collectionToString[T: set | seq](x: T, b, e: string): string = var firstElement = true for value in items(x): if not firstElement: result.add(", ") - result.add($value) + if value.isNil: result.add "nil" + else: result.add($value) firstElement = false result.add(e) diff --git a/tests/stdlib/tnilecho.nim b/tests/stdlib/tnilecho.nim new file mode 100644 index 000000000..147b5e492 --- /dev/null +++ b/tests/stdlib/tnilecho.nim @@ -0,0 +1,2 @@ +var x = @["1", nil, "3"] +doAssert $x == "@[1, nil, 3]" |