boost-parameter

Boost Parameters library

由 徘徊边缘 提交于 2019-12-21 02:41:08
问题 Recently I found Parameters library in the Boost. Honestly I didn't understand the reason why this is a part of Boost. When there is need to pass several parameters to the function you can make a structure from them, like: struct Parameters { Parameters() : strParam("DEFAULT"), intParam(0) {} string strParam; int intParam; }; void foo(const Parameters & params) { } Parameters params; params.intParam = 42; foo(params); This is very easy to write and understand. Now example with using Boost

Boost Parameters library

由 最后都变了- 提交于 2019-12-21 02:41:08
问题 Recently I found Parameters library in the Boost. Honestly I didn't understand the reason why this is a part of Boost. When there is need to pass several parameters to the function you can make a structure from them, like: struct Parameters { Parameters() : strParam("DEFAULT"), intParam(0) {} string strParam; int intParam; }; void foo(const Parameters & params) { } Parameters params; params.intParam = 42; foo(params); This is very easy to write and understand. Now example with using Boost

boost::property_tree : Parsing of Complex xml strucure

由 柔情痞子 提交于 2019-12-10 00:08:22
问题 I am want to parse below xml structure using boost property_tree. <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <Txn ver="1.0"> <TOpts tCount="1" tformat="0" ttimeout="10" /> <TData> <Tvalue date="YYMMDD" time="HHMM" Ref="100"/> </TData> <TCustOpts> <Param name="SALE" value="xyz" /> </TCustOpts> </Txn> I am able to parse, first Topts field of above xml, But for TData & TCustOpts field, I am not getting right iteration and approach to parse the xml and facing exception. Can someone

boost::property_tree : Parsing of Complex xml strucure

由 孤街醉人 提交于 2019-12-04 21:21:08
I am want to parse below xml structure using boost property_tree. <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <Txn ver="1.0"> <TOpts tCount="1" tformat="0" ttimeout="10" /> <TData> <Tvalue date="YYMMDD" time="HHMM" Ref="100"/> </TData> <TCustOpts> <Param name="SALE" value="xyz" /> </TCustOpts> </Txn> I am able to parse, first Topts field of above xml, But for TData & TCustOpts field, I am not getting right iteration and approach to parse the xml and facing exception. Can someone provide me right approach for TData & TCustOpts field parsing. Below is my code for reference.

Boost Parameters library

由 我的梦境 提交于 2019-12-03 08:31:48
Recently I found Parameters library in the Boost. Honestly I didn't understand the reason why this is a part of Boost. When there is need to pass several parameters to the function you can make a structure from them, like: struct Parameters { Parameters() : strParam("DEFAULT"), intParam(0) {} string strParam; int intParam; }; void foo(const Parameters & params) { } Parameters params; params.intParam = 42; foo(params); This is very easy to write and understand. Now example with using Boost Parameters: BOOST_PARAMETER_NAME(param1) BOOST_PARAMETER_NAME(param2) BOOST_PARAMETER_FUNCTION( (void), //

C++ “Named Parameter Idiom” vs. Boost::Parameter library

由 和自甴很熟 提交于 2019-11-27 18:30:55
I've looked at both the Named Parameter Idiom and the Boost::Parameter library . What advantages does each one have over the other? Is there a good reason to always choose one over the other, or might each of them be better than the other in some situations (and if so, what situations)? Implementing the Named Parameter Idiom is really easy, almost about as easy as using Boost::Parameter, so it kind of boils down to one main point. -Do you already have boost dependencies? If you don't, Boost::parameter isn't special enough to merit adding the dependency. Personally I've never seen Boost:

Using strong typedef as a more lightweight alternative to Boost Parameter library?

由 ≡放荡痞女 提交于 2019-11-27 02:38:55
问题 I often use the Boost strong typedef utility to improve the safety of my programs. For example by writing code like this: BOOST_STRONG_TYPEDEF(int, X) BOOST_STRONG_TYPEDEF(int, Y) BOOST_STRONG_TYPEDEF(int, Width) BOOST_STRONG_TYPEDEF(int, Height) struct Rect { Rect(X x, Y y, Width w, Height h); }; // Usage: Rect rect(X(10), Y(20), Width(800), Height(600)); The strong typedef here improves both code readability and safety. (The compiler will report an error if the arguments are provided in the

C++ “Named Parameter Idiom” vs. Boost::Parameter library

由 谁都会走 提交于 2019-11-26 19:28:46
问题 I've looked at both the Named Parameter Idiom and the Boost::Parameter library. What advantages does each one have over the other? Is there a good reason to always choose one over the other, or might each of them be better than the other in some situations (and if so, what situations)? 回答1: Implementing the Named Parameter Idiom is really easy, almost about as easy as using Boost::Parameter, so it kind of boils down to one main point. -Do you already have boost dependencies? If you don't,
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