.\"
.de Id
..
.de Sp
.if n .sp
.if t .sp 0.4
..
.TH catchmark 4rheolef "rheolef-6.7" "rheolef-6.7" "rheolef-6.7"
.\" label: /*Class:
.SH NAME
\fBcatchmark\fP - iostream manipulator
.\" skip: @clindex catchmark
.\" skip: @clindex field
.SH DESCRIPTION

The \fBcatchmark\fP is used for building labels used
for input-output of vector-valued fields (see field(2)):
.\" begin_example
.Sp
.nf
        cin  >> catchmark("f")   >> fh;
        cout << catchmark("u")   << uh
             << catchmark("w")   << wh
             << catchmark("psi") << psih;
.Sp
.fi
.\" end_example
Assuming its value for output
is \fB"u"\fP, the corresponding labels will be
\fB"#u0"\fP, \fB"#u1"\fP, \fB"#u2"\fP, ...
.\" END
.SH IMPLEMENTATION
.\" begin_example
.Sp
.nf
class catchmark {
    public:
        catchmark(const std::string& x);
        const std::string& mark() const { return _mark; }
        friend std::istream& operator >> (std::istream& is, const catchmark& m);
        friend std::ostream& operator << (std::ostream& os, const catchmark& m);
    protected:
        std::string _mark;
};
.Sp
.fi
.\" end_example

.\" LENGTH = 1
.SH SEE ALSO
field(2)