Re: [Quickfix-developers] How to set custom/user-defined fields

[Oren M. <om...@ri...>]

Nope, that should be passed as a reference.  I made the change and did=20=

a performance test and it actually doesn't make any difference, at=20
least when using an optimizer.  My guess is the optimizer is smart=20
enough to know that if you are passing in a const object, it might as=20
well pass it in as a reference anyway.  With the optimizer turned off=20
it there would be a significant difference.  In any case I'll check in=20=

the change.

--oren

On May 17, 2004, at 9:08 AM, Caleb Epstein wrote:

> On Mon, May 17, 2004 at 09:00:48AM -0500, Vijay Singh Yadav wrote:
>
> > Hello All, This should be a fairly elementary question. How does one
>  > set a user-defined tag in a message (I need to do this for both
>  > NewOrderSingle and CancelReplace classses).=A0 We have a custom tag
>  > 9707 that needs to take a value 20 so I need to append 9707=3D20 to
>  > all the messages I have. My current code works but this is a new
>  > requirement I would like to introduce this change with minimal
>  > impact.
>
> =A0=A0=A0=A0=A0=A0=A0 Use one of these methods:
>
> =A0=A0=A0=A0=A0=A0=A0 FieldMap::setField (const FieldBase& field, bool =
overwrite =3D=20
> true);
>  =A0=A0=A0=A0=A0=A0=A0 FieldMap::setField (int field, const =
std::string value);
>
> =A0=A0=A0=A0=A0=A0=A0 The message classes all derive from FieldMap.
>
> =A0=A0=A0=A0=A0=A0=A0 Oren: any reason the second form of setField =
takes a "const
>  =A0=A0=A0=A0=A0=A0=A0 std::string" and not a "const std::string&"?
>
> --=20
> Caleb Epstein |=A0 bklyn . org=A0 | Military secrets are the most =
fleeting=20
> of all.
>  =A0=A0=A0 cae at=A0=A0=A0 | Brooklyn Dust | =A0=A0=A0=A0=A0=A0=A0 =
=A0=A0=A0=A0=A0=A0=A0 -- Spock, "The=20
> Enterprise
>  bklyn dot org |=A0=A0 Bunny Mfg.=A0 | =A0=A0=A0=A0=A0=A0=A0 =A0=A0=A0=A0=
=A0=A0=A0 Incident", stardate=20
> 5027.4
>
>
>
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