Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Favorites infavorites:mine
infavorites:1234
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
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Results tagged with Search options user 16143

This challenge is related to the BF language. Note that challenges that require the answers to be in a specific language are generally discouraged.

1
vote
Perl, 325 bytes undef$/;open C,'<',pop;@I=split//,unpack'b*',<>;@C=split//,<C>;while($c<@C){$_=$C[$c];$D=\$D{$d};$$D=!$$D if/\+/;$$D=shift@I if/,/;/</&&$d--;/>/&&$d++;$O.=$$D?1:0if/;/;if(/\[/&&!$$D){ …
answered May 19 '14 by Heiko Oberdiek