[Perl6/en]Modify an error about the Range constructor (#3612)

[Perl6/en] Modify an error about the Range constructor

1 files changed, 12 insertions, 3 deletions

diff --git a/perl6.html.markdown b/perl6.html.markdown
index 1304869b..c7fde218 100644
--- a/perl6.html.markdown
+++ b/perl6.html.markdown
@@ -499,10 +499,19 @@ say False ~~ True;  #=> True
 
 ## Range constructor
 ##------------------
-3 .. 7;          # 3 to 7, both included
+3 .. 7;          # 3 to 7, both included. 
 3 ..^ 7;         # 3 to 7, exclude right endpoint.
-3 ^.. 7;         # 3 to 7, exclude left endpoint. Same as `4..7`.
-3 ^..^ 7;        # 3 to 7, exclude both endpoints. Same as `4..6`.
+3 ^.. 7;         # 3 to 7, exclude left endpoint.
+3 ^..^ 7;        # 3 to 7, exclude both endpoints.
+		 # 3 ^.. 7 almost like 4 .. 7 when we only consider integers.
+		 # But when we consider decimals :
+3.5 ~~ 4 .. 7;	 # False
+3.5 ~~ 3 ^.. 7;	 # True, This Range also contains decimals greater than 3.
+		 # We describe it like this in some math books: 3.5 ∈ (3,7]
+		 # If you don’t want to understand the concept of interval 
+		 # for the time being. At least we should know：
+3 ^.. 7 ~~ 4 .. 7; # False
+
 
 ## This also works as a shortcut for `0..^N`:
 ^10;             # means 0..^10