Mirror/wren
1
0
Fork 1
mirror of https://github.com/wren-lang/wren.git synced 2026-01-18 13:49:59 +01:00
Code Issues Packages Projects Releases Wiki Activity

Subscript operators!

Browse Source
This commit is contained in:
Bob Nystrom
2013-11-24 10:45:07 -08:00
parent e3e1f7f3d4
commit f9b008e283
3 changed files with 93 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
test/string_subscript.wren Normal file
View File

@ -0,0 +1,24 @@
// Returns characters (as strings).
io.write("abcd"[0]) // expect: a
io.write("abcd"[1]) // expect: b
io.write("abcd"[2]) // expect: c
io.write("abcd"[3]) // expect: d
// Allows indexing backwards from the end.
io.write("abcd"[-4]) // expect: a
io.write("abcd"[-3]) // expect: b
io.write("abcd"[-2]) // expect: c
io.write("abcd"[-1]) // expect: d
// Handle out of bounds.
// TODO(bob): Should halt the fiber or raise an error somehow.
io.write("abcd"[4]) // expect: null
io.write("abcd"[-5]) // expect: null
// Handle wrong argument type.
// TODO(bob): Should halt the fiber or raise an error somehow.
io.write("abcd"[true]) // expect: null
// Handle non-integer index.
// TODO(bob): Should halt the fiber or raise an error somehow.
io.write("abcd"[1.5]) // expect: null