Error converting between gregorian and julian calendar types

[nisse2562]

this code: http://pastebin.com/f168570c8
gives the compile error:
test_templates. cpp: In function 'int main(int, char**)':
test_templates. cpp:51: error: expected `(' before 'g'
test_templates. cpp:51: error: expected `)' before ';' token
test_templates. cpp:51: error: invalid const_cast from type 'bar<lab2::Greg orian>' to type 'bar<lab2::Juli an>*'

where the Julian and Gregorian are date classes that inherit from Date
How do I "make" the variable j as if it was of <template> type Georgian?

[r035198x]

this code: http://pastebin.com/f168570c8
gives the compile error:
test_templates. cpp: In function 'int main(int, char**)':
test_templates. cpp:51: error: expected `(' before 'g'
test_templates. cpp:51: error: expected `)' before ';' token
test_templates. cpp:51: error: invalid const_cast from type 'bar<lab2::Greg orian>' to type 'bar<lab2::Juli an>*'

where the Julian and Gregorian are date classes that inherit from Date
How do I "make" the variable j as if it was of <template> type Georgian?

Don't be too lazy to post your code here. It's just a copy paste operation.

[sicarie]

this code: http://pastebin.com/f168570c8
gives the compile error:
test_templates. cpp: In function 'int main(int, char**)':
test_templates. cpp:51: error: expected `(' before 'g'
test_templates. cpp:51: error: expected `)' before ';' token
test_templates. cpp:51: error: invalid const_cast from type 'bar<lab2::Greg orian>' to type 'bar<lab2::Juli an>*'

where the Julian and Gregorian are date classes that inherit from Date
How do I "make" the variable j as if it was of <template> type Georgian?

You sure you want to do that with 'j'? Your error is about 'g'....

(Of course, if you'd posted your code, we could see. Specifically, line 51. PS - I don't follow links posted by people I don't know on an internet board...)

[weaknessforcats]

j=const_cast< bar<Julian> *>g;

has a syntax error. It shouild be:

j=const_cast< bar<Julian> *> (g);
 

Now the only problem is that g is an object and you can't use const_cast to change an object into a pointer.

While I'm at it, what's with the cast?? Usually in C++ you cast when a) you need to call a relic C function that has something like a void* argument or b) your C++ design is screwed up. C++ casting is a firefighting tool not intended to be part of your everyday coding style.