Hash
function Hash: TvxHash;
Example
procedure ScriptEvent(var Value: variant);
begin
Value := Hash.HashString('Example');
end;
Usage
Hash provides the action's reusable hashing operations. Use HashString to calculate a digest, HasChanged to compare data with a supplied hash, and RowHash as documented for the helper.
The same helper is used by scripts throughout the action, so do not rely on mutable helper state remaining unchanged across other calls. Copy the string or Boolean result you need. Reading Hash does not hash, validate or persist data by itself.
Additional Technical Info
Hash is a no-argument Velox scripting helper that returns a live object. It does not copy the object or make the returned reference private to the calling statement.
| Property | Detail |
|---|---|
| Return type | TvxHash |
| Ownership | Action-owned and shared across the action's scripts |
| Creation/access | Getter call; see lifecycle below |
| Thread safety | Mutable and not safe for concurrent/asynchronous use |
Failures, safety and implementation cautions
A hash is not encryption, authentication, authorisation or a digital signature. Do not use an undocumented algorithm/output as password storage or a security protocol, and do not assume collision resistance or cross-version stability beyond the documented class contract.
Class methods can raise on invalid state, parsing/conversion failures, I/O errors or invalid arguments unless their own contract documents a different result. Copy required scalar results before another script or operation can replace mutable state.
Related entry
TvxHashdocuments the returned class and its exposed methods/properties.Helperscompares lifetime, sharing and context rules for all helper objects.
External references
- No core Delphi/FPC function is wrapped directly by this accessor; use the Velox class link above as the behavioural contract.