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c++ Programming Glossary: x1Why does wide file-stream in C++ narrow written data by default? http://stackoverflow.com/questions/1509277/why-does-wide-file-stream-in-c-narrow-written-data-by-default an UTF 8 locale I get env LC_ALL en_US.utf8 . a.out od t x1 test.dat 0000000 c3 bf 0a 0000003 od t x1 just dump the file.. . a.out od t x1 test.dat 0000000 c3 bf 0a 0000003 od t x1 just dump the file represented in hex exactly what I expect..
What is the difference between (type)value and type(value)? http://stackoverflow.com/questions/1652396/what-is-the-difference-between-typevalue-and-typevalue declared constructor 8.5 12.1 and the expression T x1 x2 ... is equivalent in effect to the declaration T t x1 x2.. T x1 x2 ... is equivalent in effect to the declaration T t x1 x2 ... for some invented temporary variable t with the result..
Finding the centroid of a polygon? http://stackoverflow.com/questions/2792443/finding-the-centroid-of-a-polygon 0.0 Current vertex X double y0 0.0 Current vertex Y double x1 0.0 Next vertex X double y1 0.0 Next vertex Y double a 0.0 Partial.. i 0 i vertexCount 1 i x0 vertices i .x y0 vertices i .y x1 vertices i 1 .x y1 vertices i 1 .y a x0 y1 x1 y0 signedArea.. i .y x1 vertices i 1 .x y1 vertices i 1 .y a x0 y1 x1 y0 signedArea a centroid.x x0 x1 a centroid.y y0 y1 a Do last..
boost spirit semantic action parameters http://stackoverflow.com/questions/3066701/boost-spirit-semantic-action-parameters say part of our input is a sequence of three CSV integers x1 x2 x3 and we only care out an arithmetic function of these three.. out an arithmetic function of these three integers f x0 x1 x2 x3 where x0 is a value obtained elsewhere. One option is.. int _a ascii space_type intRule qi int_ qi _a qi _1 local x1 qi int_ qi _a qi _1 local x1 x2 qi int_ qi _val qi _a qi..
http://stackoverflow.com/questions/3247285/const-int-int-const equivalent. Declares 2 ints which are constant int const x1 3 const int x2 3 Declares a pointer whose data cannot be changed..
Nonstatic member as a default argument of a nonstatic member function http://stackoverflow.com/questions/4539406/nonstatic-member-as-a-default-argument-of-a-nonstatic-member-function instance of the class the default value mem belongs to X x1 100 mem 100 X x2 200 mem 200 x1.f param is 100 or 200 or something.. value mem belongs to X x1 100 mem 100 X x2 200 mem 200 x1.f param is 100 or 200 or something else Your answer might be.. Your answer might be 100 as f is invoked on the object x1 which has mem 100 . If so then it requires the implementation..
Sequence-zip function for c++11? http://stackoverflow.com/questions/8511035/sequence-zip-function-for-c11 unfamiliar with Python the code Y1 1 2 3 Y2 4 5 6 7 for x1 x2 in zip Y1 Y2 print x1 x2 Gives as output 1 4 2 5 3 6 c c.. the code Y1 1 2 3 Y2 4 5 6 7 for x1 x2 in zip Y1 Y2 print x1 x2 Gives as output 1 4 2 5 3 6 c c 11 sequences share improve..
C++ compile-time constant detection http://stackoverflow.com/questions/3299834/c-compile-time-constant-detection is_const X is_const_0 X ^ X 0x7FFFFFFF #define const_bit X1 bit is_const_0i X1 1 bit bit #define const_nibl X1 bit const_bit.. X ^ X 0x7FFFFFFF #define const_bit X1 bit is_const_0i X1 1 bit bit #define const_nibl X1 bit const_bit X1 bit const_bit.. X1 bit is_const_0i X1 1 bit bit #define const_nibl X1 bit const_bit X1 bit const_bit X1 bit 1 const_bit X1 bit 2 const_bit..
Best way to build a list of per type data? http://stackoverflow.com/questions/401621/best-way-to-build-a-list-of-per-type-data to remember to create a static AutoRegister SomeClass X1 auto_X1 static AutoRegister SomeClass X2 auto_X2 ... etc...... remember to create a static AutoRegister SomeClass X1 auto_X1 static AutoRegister SomeClass X2 auto_X2 ... etc.... for each..
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