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.\" ========================================================================
.\"
.IX Title "GraphQL::Type::Scalar 3pm"
.TH GraphQL::Type::Scalar 3pm "2022-03-27" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
GraphQL::Type::Scalar \- GraphQL scalar type
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 9
\&  use GraphQL::Type::Scalar;
\&  my $int_type = GraphQL::Type::Scalar\->new(
\&    name => \*(AqInt\*(Aq,
\&    description =>
\&      \*(AqThe \`Int\` scalar type represents non\-fractional signed whole numeric \*(Aq .
\&      \*(Aqvalues. Int can represent values between \-(2^31) and 2^31 \- 1. \*(Aq,
\&    serialize => \e&coerce_int,
\&    parse_value => \e&coerce_int,
\&  );
.Ve
.SH "ATTRIBUTES"
.IX Header "ATTRIBUTES"
Has \f(CW\*(C`name\*(C'\fR, \f(CW\*(C`description\*(C'\fR from GraphQL::Role::Named.
.SS "serialize"
.IX Subsection "serialize"
Code-ref. Required.
.PP
Coerces
\&\fBfrom\fR a Perl entity of the required type,
\&\fBto\fR a GraphQL entity,
or throws an exception.
.PP
Must throw an exception if passed a defined (i.e. non-null) but invalid
Perl object of the relevant type. \f(CW\*(C`undef\*(C'\fR must always be valid.
.SS "parse_value"
.IX Subsection "parse_value"
Code-ref. Required if is for an input type.
.PP
Coerces
\&\fBfrom\fR a GraphQL entity,
\&\fBto\fR a Perl entity of the required type,
or throws an exception.
.SH "METHODS"
.IX Header "METHODS"
.SS "is_valid"
.IX Subsection "is_valid"
True if given Perl entity is valid value for this type. Uses \*(L"serialize\*(R"
attribute.
.SH "EXPORTED VARIABLES"
.IX Header "EXPORTED VARIABLES"
.ie n .SS "$Int"
.el .SS "\f(CW$Int\fP"
.IX Subsection "$Int"
.ie n .SS "$Float"
.el .SS "\f(CW$Float\fP"
.IX Subsection "$Float"
.ie n .SS "$String"
.el .SS "\f(CW$String\fP"
.IX Subsection "$String"
.ie n .SS "$Boolean"
.el .SS "\f(CW$Boolean\fP"
.IX Subsection "$Boolean"
.ie n .SS "$ID"
.el .SS "\f(CW$ID\fP"
.IX Subsection "$ID"