StackOverflow2013

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PO
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Id
17736610
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0
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2013-07-19T01:15:56.813
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2013-07-19T01:15:56.813
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text
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Just as a follow up, this does the same this for arbitrary width, and does the same for binary output, for example, assuming the below in in a file called hexbinfmt.h, the following: <pre><code>#include <hexbinfmt.h> int main() { unsigned long long ll=0x7589347dfdf7834; std::cout << "hexb(ll): 0x" << hexb(ll) << ", bin(ll): " << bin(ll) << '\n'; uint8_t u8t=0xce; std::cout << "hexb(u8t): 0x" << hexb(u8t) << ", bin(u8t): " << bin(u8t) << '\n'; } </code></pre> outputs: <pre><code>hexb(ll): 0x07589347dfdf7834, bin(ll): 0000011101011000100100110100011111011111110111110111100000110100 hexb(u8t): 0xce, bin(u8t): 11001110 </code></pre> Can you help me find a simpler way of doing the same thing? <pre><code>#ifndef HEXBINFMT_H #define HEXBINFMT_H #include <iostream> #include <iomanip> template<typename T> class hexcdumper{ public: hexcdumper(T c):c(c){}; std::ostream& operator()(std::ostream& os) const { // set fill and width and save the previous ones to be restored later char fill=os.fill('0'); std::streamsize ss=os.width(sizeof(T)*2); // get a copy of the format flags to be restored after setting std::hex std::ios::fmtflags ff=os.flags(); // put the character out as hex if(sizeof(T)==1){ os << std::hex << int(c); }else{ os << std::hex << c; } // restore everything os.fill(fill); os.width(ss); os.flags(ff); return os; } private: T c; }; template<typename T> hexcdumper<T> hexb(T c) { return(hexcdumper<T>(c)); } template<typename T> std::ostream& operator<<(std::ostream& os, const hexcdumper<T>& hcd) { return(hcd(os)); } template<typename T> class bincdumper{ public: bincdumper(T c):c(c){}; std::ostream& operator()(std::ostream& os) const { T mask=1; mask <<= (sizeof(T)*8)-1; for(size_t i=0;i<sizeof(T)*8;i++){ if(c&mask){ os<<'1'; }else{ os<<'0'; } mask>>=1; } return os; } private: T c; }; template<typename T> bincdumper<T> bin(T c) { return(bincdumper<T>(c)); } template<typename T> std::ostream& operator<<(std::ostream& os, const bincdumper<T>& bcd) { return(bcd(os)); } #endif </code></pre>
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1. This table or related slice is empty.
PostParentId
1. POc++ insert to a stream with formatting for hex
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1. PTAnswer
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1. This table or related slice is empty.
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1. USPatrick
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