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.
File "modifier_modview.cpp"
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 | replace(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

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