ModView

Example Program

ModView

How to modify strings with a per-character functor.

Remarks

Take a look at the file seqan/modifier/modifier_functors.h to see what functors are already part of SeqAn.

A tutorial about the use of a user-defined modifier.

1	#include <iostream>
2	#include <seqan/file.h>
3	#include <seqan/modifier.h>
4
5	using namespace seqan;
6

A user-defined modifier that transforms all characters to upper case.

7	struct MyFunctor : public ::std::unary_function<char,char>
8	{
9	inline char operator()(char x) const
10	{
11	if (('a' <= x) && (x <= 'z')) return (x + ('A' - 'a'));
12	return x;
13	}
14	};
15
16
17	int main ()
18	{

The modifier is applied to a string.

19	String<char> myString = "A man, a plan, a canal-Panama";
20	ModifiedString< String<char>, ModView<MyFunctor> > myModifier(myString);
21
22	::std::cout << myString << ::std::endl;
23	::std::cout << myModifier << ::std::endl;
24	infix(myString, 9, 9) = "master ";
25	::std::cout << myString << ::std::endl;
26	::std::cout << myModifier << ::std::endl;
27
28	return 0;
29	}

Output

weese@tanne:~/seqan$ cd demos
weese@tanne:~/seqan/demos$ make modifier_modview
weese@tanne:~/seqan/demos$ ./modifier_modview
A man, a plan, a canal-Panama
A MAN, A PLAN, A CANAL-PANAMA
A man, a master plan, a canal-Panama
A MAN, A MASTER PLAN, A CANAL-PANAMA
weese@tanne:~/seqan/demos$

See

ModView, ModifiedString, String

SeqAn - Sequence Analysis Library - www.seqan.de