Edit: I have to apologize, the problem I posted about actually does not exist in the code I posted, because I oversimplified it. I'll try to post something later. Deletion would also be ok, but there are too many answers at present, so I cannot do it myself. Edit2: Ok, here goes: Let, function F() { this.field = "value" ; v...
Is there any reason why MUL operator is only in single operand form? IMUL operator can be in three different forms (with one, two or three operands) and this is much more convenient. From the technical point of view I don't see any reason why MUL operator can't be in two/three operands form. ...
Hello, I want to call a specific operator of specific base class of some class. For simple functions it's easy: I just write SpecificBaseClass::function( args );. How should I implement the same for operators without casting trickery? Isolated problem: class A { public: A operator+( const A &other ) const {...} }; class B :...
Following parameters are given: boolean a = true ; boolean b = false ; boolean c = true ; I want to have minimal code of this version: if ( ( a && ! b) || ( ! a && b) ) { z1 += 99 ; } if (a ^ b) { z1 += 19 ; } if ( ( a && b) || ( ! a && ! b) ) { z1 += 118; } What needs to be modified? ...
This has been probably asked a lot of times, but couldn't find anything like this from searching, possible that I used wrong keywords - have no idea what is this called. Basicly, I've seen people using @ before their function calls, not for every function, but some kind of extension functions like file_get_contents(), mysql_connect() an...
Possible Duplicate: How to search for punctuation that gets ignored by Google? Occasionally, I come across an unfamiliar operator that can't be read aloud. One example is the heredoc notation of PHP, where strings are demarked with <<<. Another example is |= in C#. (If I'm entirely honest, I still don't know 100% what it is ...
After some trial and a lot of error, I have come to find out that it is not very useful to template operators. As an Example: class TemplateClass { //Generalized template template<TType> TType& operator[](const std::string& key) { return TType; } //Specialized template for int template<> int& operator[]<int>(const st...
The code below is part of an rss feed parser using WordPress's simplepie fetch_feed()... Code is: if ($enclosure = $item->get_enclosure(0)) { $image_thumb = $item->get_enclosure()->get_link().'screenshot.jpg'; $image = $item->get_enclosure()->get_link().'screenshot-full.jpg'; } $link = esc_url( strip_tags( $item...
The "goatse operator" or the =()= idiom in Perl causes an expression to be evaluated in list context. An example is: my $str = "5 and 4 and a 3 and 2 1 BLAST OFF!!!"; my $count =()= $str =~ /\d/g; # 5 matches... print "There are $count numbers in your countdown...\n\n"; As I interprete the use, this is what happens: $str =~ /\d/g ...
Possible Duplicate: What does !! mean in ruby? Hi, I'm new to Ruby and can't find anywhere description of what "!!" means. Here's an example: def signed_in? !!current_user end If this is a double negative, why not to say: def signed_in? current_user end Please help. ...
I tried using 6%2, but its always giving the value as 2 and not 0. Why and how can I get a solution to this? ...
Fallowing statement is from Character class of java: (1 << Character.PARAGRAPH_SEPARATOR)) >> type PARAGRAPH_SEPARATOR is a byte and type is an integer. The operators in this sentence, what do they do? how and where I can use those operators? Here is the oracles java.lang.Character doc. Nearly all the methods in the class uses those...
How come this is not possible? I am getting illegal start of expression. (s1.charAt(i) == ' ') ? i++ : break; ...
In my code I'm passing around some structures by reference, declaring them mutable and using the & symbol. The problem is that in some place the fields are corrupted (happens only in release mode) and I don't know absolutely why. I have found a fix, using ref keyword instead of the address-of operator. I understand that you can intercha...
I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not. Here are two strings. The top string is matched while the lower is not. The absence of a single letter in the lower string is what is making it fail. I'd like to get the single letter after the startin...
I know the rules for && but what is & and | how to evaluate? Please explain me with an example. ...
Hi all. I usually write this: if ($myvar == null) but sometimes I read this: if (null == $myvar) I remember somebody told me the latter is better but I don't remember why. Do you know which is better and why? Thanks, Dan ...
I'm working on Arrows in F# and I wanted to create a *** operator. I note, however, that (***), the necessary way to express an operator in a function definition, overlaps with the F# block comment syntax. So how could you actually express this? I thought of maybe .***. but I think that will actually treat the dots as part of the ope...
While playing with this answer by user GMan I crafted the following snippet (compiled with Visual C++ 9): class Class { public: operator void() {} }; Class object; static_cast<void>( object ); (void)object; object.operator void(); after stepping over with the debugger I found out that casting to void doesn't invoke Class:...
I have the following in a for loop and the compiler says 'operator = is ambiguous'. Not sure how to solve this issue, can anyone help? rootelement = document->getDocumentElement(); boost::interprocess::unique_ptr<DOMNodeIterator, release_deleter> itera (document->createNodeIterator(rootelement, DOMNodeFilter::SHOW_ALL, NULL, true))...