format_ipv4_mask
Formats an IPv4 address as a CIDR, `a.b.c.d/N`, keeping the leading bits of the smaller of its own /mask and the optional prefix.
With neither, the mask is /32. The address may be a string or a long. An invalid address or a prefix outside 0-32 gives an empty string.
Syntax
format_ipv4_mask(ip)Parameters
Prop
Type
Given a dynamic field
This parameter is string-only. In permissive mode — the default — almost every field arrives as a dynamic, so passing one works because Berserk injects asstring: extract-or-null, the value when it really is a string and null otherwise, so the call yields null (a predicate yields false). A property bag or array is therefore not matched, and tostring() is never applied implicitly — use it explicitly to match a bag's JSON text, keys included. Strict mode rejects the dynamic instead of coercing it. See String coercion and the asXXX family.
Returns: string
Syntax
format_ipv4_mask(ip, prefix)Parameters
Prop
Type
Given a dynamic field
This parameter is string-only. In permissive mode — the default — almost every field arrives as a dynamic, so passing one works because Berserk injects asstring: extract-or-null, the value when it really is a string and null otherwise, so the call yields null (a predicate yields false). A property bag or array is therefore not matched, and tostring() is never applied implicitly — use it explicitly to match a bag's JSON text, keys included. Strict mode rejects the dynamic instead of coercing it. See String coercion and the asXXX family.
Returns: string
Syntax
format_ipv4_mask(ip)Parameters
Prop
Type
Returns: string
Syntax
format_ipv4_mask(ip, prefix)Parameters
Prop
Type
Returns: string
Examples
Example 1
print format_ipv4_mask('192.168.1.255', 24)| print_0 (string) |
|---|
| 192.168.1.0/24 |