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I'm using libpqxx to access PostgreSQL database. It provides very low level interface so queries are actually constructed by hand using string operations. I feel that this approach has some drawbacks:
typos possibility
no type checking
a lot of handwriting
So most errors will be noticed at runtime. I would like to have more checks at compile time so that code that I write and ship is more reliable.
Is there a solution to my problem?
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If I make some changes to my code in the hopes that it will improve performance, what's the best way to tell? Just running my code again I often find that Yes, it improved speed from 20.0 seconds to 19.5 seconds, but then I run it again and whops, 20.1 seconds. Is there something like a "total number of operations" or something that will be completely deterministic between runs that you can use to measure performance? I am coding C++ in Visual Studio
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I am using boost msm to implement HSM and I am at the point where the maximum number of transitions possible is 50. I looked at some blog posts and they said that if we create /mpl/vector/vector60.hpp, it should work. I tried and this is the error I get
I am wondering how I am generate these vector60, vector70.hpp .. files or map60, map70.hpp files so that I can get more transitions.
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So I'm brand new to c++ and just started the beginner class. The professor has given us the exact prompt to put into the program and I am still receiving an error. I have checked over and over for any small flaws such as spacing or random ";" that a lot of people seem to do, but still no results. Can anyone see anything wrong with what I have down?
Remove asterisk (*) right below "//Purpose of this program ..." and try it again.
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When i tried to register my POA in corba, i am getting Marshelling exception. I registered all registry already with my object.
I m using ACE/TAO 2.0a
Any help appriciated
Architecture has been changed in corba since 1.3a now you have to try registering all MarshellingProxyies that supply. Please have a look at new registryfactory in CORBA 2.2a,
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I downloaded the source of libao. Do I need to compile it into a library/dll for windows or do I use the source as is.
Has anyone done this before? libao is an audio library, which I found here: http://www.xiph.org/ao/
Like plenty of open source projets, you need to compile it first before using it, unless you want to keep every required source codes along with your project and compile them each time. This can be a mess since you can (and more likely will) alterate something in the library one day or another. For that reason, you should compile it into something then link to it.