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What is a Question Mark “?” and Colon “:” Operator Used for? [duplicate]
Two questions about using a question mark "?" and colon ":" operator within the parentheses of a print function: What do they do? Also, does anyone know the standard term for them or where I can find more information on their use? I've read that they are similar to an 'if' 'else' statement.
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file_put_contents(meta/services.json): failed to open stream: Permission denied
I am new to Laravel. I was trying to open http://localhost/test/public/ and I got
30 Answers
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Why not infer template parameter from constructor?
... the only point of entry of the class (I am talking about copy constructor and operator=). So suppose you are using your class like this :
MyClass m(string s);
MyClass *pm;
*pm = m;
I am not sure if it would be so obvious for the parser to know what template type is the MyClass pm;
Not sure if ...
Best TCP port number range for internal applications [closed]
...re each of our internal applications runs on an individual Tomcat instance and uses a specific TCP port. What would be the best IANA port range to use for these apps in order to avoid port number collisions with any other process on the server?
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Is storing a delimited list in a database column really that bad?
...y connection with the authors. I like to celebrate good products, services and help when I see it.
– therobyouknow
Jan 30 '12 at 16:22
2
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How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
...ow about accesing data from one structure vs the other? I'm thinking cache and location
– Horia Toma
Apr 14 '14 at 22:38
9
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Programmatic equivalent of default(Type)
I'm using reflection to loop through a Type 's properties and set certain types to their default. Now, I could do a switch on the type and set the default(Type) explicitly, but I'd rather do it in one line. Is there a programmatic equivalent of default?
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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In contrast, Intel C++ Compiler , executable icc , will eliminate the library call for pow(a,6) .)
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Order of items in classes: Fields, Properties, Constructors, Methods
... the ordering is as follows.
Within a class, struct or interface: (SA1201 and SA1203)
Constant Fields
Fields
Constructors
Finalizers (Destructors)
Delegates
Events
Enums
Interfaces (interface implementations)
Properties
Indexers
Methods
Structs
Classes
Within each of these groups order by acces...
What is the difference between a regular string and a verbatim string?
I have a trial version of Resharper and it always suggests that I switch regular strings to verbatim strings. What is the difference?
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