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| author | Brujo Benavides <[email protected]> | 2016-07-12 14:27:13 +0200 |
|---|---|---|
| committer | GitHub <[email protected]> | 2016-07-12 14:27:13 +0200 |
| commit | 66cc419fd993204a66cf57a674a2c62bbd14d9fe (patch) | |
| tree | 6c019dc549c1c27334c8b001588706de56f470dc | |
| parent | 761e4679cd3963f09e6d1623734aa2c6e28d788a (diff) | |
| download | otp-66cc419fd993204a66cf57a674a2c62bbd14d9fe.tar.gz otp-66cc419fd993204a66cf57a674a2c62bbd14d9fe.tar.bz2 otp-66cc419fd993204a66cf57a674a2c62bbd14d9fe.zip | |
Add clarification on LC semantics (#1)
It addresses the special case of generator-less LCs.
As a bonus, I fixed a typo :)
| -rw-r--r-- | system/doc/reference_manual/expressions.xml | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/system/doc/reference_manual/expressions.xml b/system/doc/reference_manual/expressions.xml index 355fd3cfef..1a3d19aed1 100644 --- a/system/doc/reference_manual/expressions.xml +++ b/system/doc/reference_manual/expressions.xml @@ -1541,7 +1541,16 @@ end</pre> <pre> 1> <input>[X*2 || X <- [1,2,3]].</input> [2,4,6]</pre> - <p>More examples are provoded in + <p>When there are no generators or bit string generators, a list comprehension + returns either a list with one element (the result of evaluating <c>Expr</c>) + if all filters are true or an empty list otherwise.</p> + <p><em>Example:</em></p> + <pre> +1> <input>[2 || is_integer(2)].</input> +[2] +2> <input>[x || is_integer(x)].</input> +[]</pre> + <p>More examples are provided in <seealso marker="doc/programming_examples:list_comprehensions"> Programming Examples.</seealso></p> |