named

问题 Taking an exemple derived from RWOCaml : utop # let divide ~first ~second = first / second;; val divide : first:int -> second:int -> int = <fun> utop # let apply_to_tuple_3 f (first,second) = f second first;; val apply_to_tuple_3 : ('a -> 'b -> 'c) -> 'b * 'a -> 'c = <fun> utop # apply_to_tuple_3 divide;; Error: This expression has type first:int -> second:int -> int but an expression was expected of type 'a -> 'b -> 'c Does it make sense to not match the types here ? apply_to_tuple_3 only

问题 I have a CDI bean implementation in a dependency jar file: @ApplicationScoped public class MyService { public String doSomething() {...} } In my webapp, I want to access that service via EL Expression, therefore I have to give it a @Named annotation. But I cannot add the annotation on the MyService implementation because I don't have the rights to change that code. Therefore I tried creating a producer like public class MyServiceProducer { @Inject MyService myService; @Produces @Named(

问题 I love the flexibility of named branches but I have some concerns about the prolifieration of heads. Even when the branch is closed, it still shows up in the heads. I have an idea for how to clean up the output from "hg heads" My question to the gurus: "What am I missing?" First off you may ask, Why might I want to totally hide the head of a named branch? For various reasons: the feature is a bad idea the feature is a good idea that is not ready for merging to tip, but maybe in a few months

问题 @FredOverflow mentioned in the C++ chatroom that this is a rare case of rvalues that have names. The C++0x FDIS mentions under 5.1.1 [expr.prim.general] p4 : Otherwise, if a member-declarator declares a non-static data member (9.2) of a class X, the expression this is a prvalue of type “pointer to X” within the optional brace-or-equal-initializer. It shall not appear elsewhere in the member-declarator. (emphasis mine) What others are there, if any? 回答1: One prominent case are enumerators enum

问题 I am using named parameters in class method calls and was wondering if there is a best practice to make sure no unknown parameters are passed. Here's what I am doing sub classmethod { my $self = shift; my %args = ( "param1" => "default1", "param2" => "default2", @_ ) if (my @invalid = grep { !/^(param1|param2)$/ } keys %args) { croak "received unknown arg(s) ".join(",", @invalid)." from ".caller(); } } Is that a proper way to go forward, or could this cause a performance problem? Best, Marcus

问题 I have a PowerShell script that accepts 3 named parameters. Please let me know how to pass the same from command line. I tried below code but same is not working. It assigns the entire value to P3 only. My requirement is that P1 should contain 1, P2 should 2 and P3 should be assigned 3. Invoke-Command -ComputerName server -FilePath "D:\test.ps1" -ArgumentList {-P1 1 -P2 2 -P3 3} Ihe below is script file code. Param ( [string]$P3, [string]$P2, [string]$P1 ) Write-Output "P1 Value :" $P1 Write

问题 I need help returning a "status code" from my child program back to the parent, where it will check the status code, print code, and exit the parent. This is for a class project, so I will put some relevant code here, but I don't to post the entire project for obvious reasons. I have forked and created the child process through exec. The parent does some fancy math and uses a named pipe to push data to the child process. The child does some more fancy math. When I uses a keyword, the child

问题 I need help returning a "status code" from my child program back to the parent, where it will check the status code, print code, and exit the parent. This is for a class project, so I will put some relevant code here, but I don't to post the entire project for obvious reasons. I have forked and created the child process through exec. The parent does some fancy math and uses a named pipe to push data to the child process. The child does some more fancy math. When I uses a keyword, the child

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I am trying to find the perfect logging clause in named.conf that would help me enable full-level logs for named service. Can someone give an example here? My current clause is given below, but this generates very minimal logs. logging { channel querylog{ file "/var/log/querylog"; severity debug 10; print

问题 I have a fairly large (new) project in which we have annotated many domain classes with JPA mappings. Now it is time to implement many named queries -- some entities may have as many as 15-20 named queries. I am thinking that writing these named queries in annotations will clutter the source files and therefore am considering putting these in XML mapping files. Is this possible? Mort importantly, is this reasonable? Are there better approaches? How is this done? 回答1: Is this possible? Yes it