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Not

This reference topic applies to FQL v4. Go to this page for the latest FQL v10 reference topics.

 
Not(value)
not_(value)
Not(value)
Not(value)
Not(value)

Description

The Not function computes the negation of a boolean value, returning true if its argument is "false", or false if its argument is "true".

Parameters

Parameter Type Definition and Requirements

value

Boolean

A single Boolean value.

Returns

A Boolean value.

Examples

The following query returns false because an argument of "true" is provided:

client.query(
  q.Not(true)
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))
false
result = client.query(
  q.not_(True)
)
print(result)
False
result, err := client.Query(
	f.Not(true))

if err != nil {
	fmt.Fprintln(os.Stderr, err)
} else {
	fmt.Println(result)
}
false
try
{
    Value result = await client.Query(
        Not(true)
    );
    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}
BooleanV(False)
Not(true)
false
Query metrics:

  •    bytesIn:  12

  •   bytesOut:  18

  • computeOps:   1

  •    readOps:   0

  •   writeOps:   0

  •  readBytes:   0

  • writeBytes:   0

  •  queryTime: 2ms

  •    retries:   0

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