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🏷️ NAME

BSON::Double - BSON type wrapper for Double

🚀 Quick Reference

Use Case	Command	Description
Wrap a number as BSON double	bson_double($number)	Creates a BSON double wrapper for the numeric value
Positive infinity	BSON::Double::pInf()	Returns positive infinity
Negative infinity	BSON::Double::nInf()	Returns negative infinity
Not‑a‑number	BSON::Double::NaN()	Returns NaN
Extended JSON (strict)	TO_JSON (automatic)	Outputs {"$numberDouble":"…"} when strict extJSON is enabled
Numification overload	0 + $obj	Returns the wrapped numeric value

📦 VERSION

version v1.12.2

📝 SYNOPSIS

use BSON::Types ':all';

my $bytes = bson_double( $number );

💡 DESCRIPTION

This module provides a BSON type wrapper for a numeric value that would be represented in BSON as a double.

⚙️ ATTRIBUTES

🔹 value

A numeric scalar (or the special strings "Inf", "-Inf" or "NaN"). This will be coerced to Perl's numeric type. The default is 0.0.

🛠️ METHODS

🔸 TO_JSON

Returns a double.

If the BSON_EXTJSON environment variable is true and the BSON_EXTJSON_RELAXED environment variable is false, returns a hashref compatible with MongoDB's extended JSON format, which represents it as a document as follows:

{"$numberDouble" : "42.0"}

If BSON_EXTJSON is false and the value is 'Inf', '-Inf' or 'NaN' (which are illegal in regular JSON), then an exception is thrown.

∞ INFINITY AND NAN

Some Perls may not support converting "Inf" or "NaN" strings to their double equivalent. They are available as functions from the POSIX module, but as a lighter alternative to POSIX, the following functions are available:

• BSON::Double::pInf() – positive infinity
• BSON::Double::nInf() – negative infinity
• BSON::Double::NaN() – not‑a‑number

⚡ OVERLOADING

The numification operator, 0+ is overloaded to return the value, the full minimal set of overloaded operations is provided (per overload documentation) and fallback overloading is enabled.

✍️ AUTHORS

• David Golden <david AT mongodb.com>
• Stefan G. <minimalist AT lavabit.com>

©️ COPYRIGHT AND LICENSE

This software is Copyright (c) 2020 by Stefan G. and MongoDB, Inc.

This is free software, licensed under:

The Apache License, Version 2.0, January 2004

🏷️ NAME 🚀 Quick Reference 📦 VERSION 📝 SYNOPSIS 💡 DESCRIPTION ⚙️ ATTRIBUTES 🛠️ METHODS ∞ INFINITY AND NAN ⚡ OVERLOADING ✍️ AUTHORS ©️ COPYRIGHT AND LICENSE