Comments in continuation lines
来源： https://stackoverflow.com/questions/30050454/comments-in-continuation-lines
continuation
Comments in continuation lines
来源： https://stackoverflow.com/questions/30050454/comments-in-continuation-lines
Prevent Visual Studio 2015 from removing line continuation characters (_) in VB.NET files
问题 I'm opening some old VB.NET projects in Visual Studio 2015 and when I edit the code, VS changes the syntax: It removes "_" in concatenations: 'Before myString = "ABC" & _ "DEF" 'After myString = "ABC" & "DEF" or add a space before !: 'Before myDatatable.Rows(0)!myColumn 'After myDatatable.Rows(0) !myColumn This syntax isn't compatible with Visual Studio 2010 or 2013. How can I disable this changes? 回答1: I had the same problem, and I was able to fix it by disabling the "Pretty listing" option
Boost future continuation never changes state
i have a question concerning the boost future continuations. Consider the following code: #define BOOST_THREAD_PROVIDES_FUTURE #define BOOST_THREAD_PROVIDES_FUTURE_CONTINUATION #define BOOST_THREAD_PROVIDES_FUTURE_UNWRAP #include <boost/thread.hpp> #include <boost/thread/future.hpp> #include <boost/date_time/posix_time/posix_time.hpp> #include <iostream> boost::future<int> test() { return boost::async([]() { for(int i = 0; i < 10; ++i){ boost::this_thread::sleep(boost::posix_time::milliseconds(1000)); } return 10;}); } int main(int argc, char *argv[]) //boost::future<int> f1 = test(); boost:
Trying to apply CPS to an interpreter
问题 I'm trying to use CPS to simplify control-flow implementation in my Python interpreter. Specifically, when implementing return / break / continue , I have to store state and unwind manually, which is tedious. I've read that it's extraordinarily tricky to implement exception handling in this way. What I want is for each eval function to be able to direct control flow to either the next instruction, or to a different instruction entirely. Some people with more experience than me suggested
Trying to apply CPS to an interpreter
I'm trying to use CPS to simplify control-flow implementation in my Python interpreter. Specifically, when implementing return / break / continue , I have to store state and unwind manually, which is tedious. I've read that it's extraordinarily tricky to implement exception handling in this way. What I want is for each eval function to be able to direct control flow to either the next instruction, or to a different instruction entirely. Some people with more experience than me suggested looking into CPS as a way to deal with this properly. I really like how it simplifies control flow in the
Why can't there be an instance of MonadFix for the continuation monad?
问题 How can we prove that the continuation monad has no valid instance of MonadFix? 回答1: Well actually, it's not that there can't be a MonadFix instance, just that the library's type is a bit too constrained. If you define ContT over all possible r s, then not only does MonadFix become possible, but all instances up to Monad require nothing of the underlying functor : newtype ContT m a = ContT { runContT :: forall r. (a -> m r) -> m r } instance Functor (ContT m) where fmap f (ContT k) = ContT (
C# await vs continuations: not quite the same?
问题 After reading Eric Lippert’s answer I got the impression that await and call/cc are pretty much two sides of the same coin, with at most syntactic differences. However, upon trying to actually implement call/cc in C# 5, I ran into a problem: either I misunderstand call/cc (which is fairly possible), or await is only reminiscent of call/cc. Consider pseudo-code like this: function main: foo(); print "Done" function foo: var result = call/cc(bar); print "Result: " + result; function bar
Prevent Visual Studio 2015 from removing line continuation characters (_) in VB.NET files
I'm opening some old VB.NET projects in Visual Studio 2015 and when I edit the code, VS changes the syntax: It removes "_" in concatenations: 'Before myString = "ABC" & _ "DEF" 'After myString = "ABC" & "DEF" or add a space before !: 'Before myDatatable.Rows(0)!myColumn 'After myDatatable.Rows(0) !myColumn This syntax isn't compatible with Visual Studio 2010 or 2013. How can I disable this changes? I had the same problem, and I was able to fix it by disabling the "Pretty listing" option in the editor. You can find this option here: Tools > Options > Text Editor > Basic > Advanced > Editor Help
Continuation monad for a yield/await function in Haskell
I want to create an automata type with a type like this: newtype Auto i o = Auto {runAuto :: i -> (o, Auto i o)} I know this is the type of the Automata arrow , but I'm not looking for an arrow. I want to make this a monad, so presumably its going to have a type like newtype Auto i o a = ???? What goes here? with a function like this: yield :: o -> Auto i o i So when I call "yield" from within the Auto monad the "runAuto" function returns a pair consisting of the argument to "yield" and the continuation function. When the application program calls the continuation function the argument is then