AsFloat
property AsFloat: Double read write;
Example
procedure ScriptEvent(var Value: Variant);
begin
Locals['Amount'].AsFloat := 12.5;
Value := Locals['Amount'].AsFloat;
end;
Usage
AsFloat reads the raw Variant as Double with zero on caught coercion failure and writes a raw Double directly.
Additional Technical Info
The getter returns a floating-point Variant directly when VarIsFloat succeeds. Otherwise it asks Delphi to coerce the raw Variant to Double inside a try/except; any exception produces 0.
Consequently zero is ambiguous between a real zero and invalid/Null/unconvertible content. String conversion follows Delphi Variant/locale rules. Use explicit validation when invalid input must be distinguishable.
The setter assigns a Double directly to raw FValue. It bypasses Value validation and encryption. The getter likewise does not decrypt, so encrypted variables commonly convert ciphertext and collapse to zero.
AsFloat0 adds only an initial trimmed-string empty check; it does not improve nonempty conversion diagnostics.