| hex |
N/A |
(*)string |
Checks if a string field is a valid hexadecimal format number (0x prefix optional) |
| notnil |
N/A |
pointers, interfaces, chans, maps, slices |
Checks and fails if a pointer is nil |
| len |
1 |
(*)string, slices, maps, chans(?) |
Uses golang's built in len method to determine the length of the field |
| len |
1 |
int |
Checks if the value equals the parameter |
| uuid |
N/A |
(*)string |
Checks and fails if a string is not a valid UUID |
| required |
N/A |
Any Nullable Value (ptr, map, slice, chan) |
Checks to see if the pointer value is nil |
| required |
N/A |
string |
Checks to see if the string != "" |
| required |
N/A |
struct |
Checks to see if the struct equals the empty value struct |
| min |
1 |
(*)string, slices, maps, chans |
Checks minimum length using len(value) |
| min |
1 |
numbers |
Checks a simple value >= param |
| max |
1 |
(*)string, slices, maps, chans |
Checks minimum length using len(value) |
| max |
1 |
numbers |
Checks a simple value <= param |
| lt(e) |
1 |
See max |
See max |
| lt(e) |
1 |
time |
Checks that the field is less than (or equal to) time.Now().UTC() |
| gt(e) |
1 |
See min |
See min |
| gt(e) |
1 |
time |
Checks that the field is greater than (or equal to) time.Now().UTC() |
| dive |
N/A |
Any |
Dive will call gencheck.Validate() on the struct/ptr/interface passed in. That function will only call validate if it can be cast to the gencheck.Validateable interface. |
| contains |
1 |
(*)string |
Checks to see if the field contains the parameter string value |
| contains |
1 |
[](*)string |
Checks to see if any of the array elements equal the parameter value |
| bcp47 |
N/A |
(*)string |
Checks to see if the string value is one of the languages defined in https://tools.ietf.org/html/bcp47 |
| ff |
N/A |
Any |
Fail Fast allows you to specify that if any validation within this field is invalid see [Fail Fast](#Fail Fast Flag) for more information |