Still with software science translations.. Now I'm coming to you with this expression that have always bothered me: "on the fly"

How the hood would you translate that *elegantly* to spanish?

It feels like "sobre la marcha" is way overkill, at least from a structure point of view. Also "al toque", sounds maybe too coloquial.

What do you think?

edit: so the english sentence could be:

> 
> The value is returned from a new function executed on the fly.
> 
> 
>
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"Al toque" sounds to me like Latin America spanish... in Spain, al least in Madrid, we don't use that expression.

"On the fly" can be translated in several forms, but "sobre la marcha" I think is the most accurate. Other forms can be "al momento", "instantáneo" or "conforme se vea". Depends from context, but I think "sobre la marcha" is the most elegant, formal and easy.

Some examples:

> 
> We will fix the errors on the fly. - Iremos corrigiendo los errores
>  *sobre la marcha* / *conforme los veamos*.
> 
> 
> The system enables 'on-the-fly' processing of queries. - El sistema
>  permite el procesamiento *instantáneo* de consultas.
> 
> 
>
I'm from Latin America and "al toque" doesn't mean exactly "on the fly", the correct translation would be "sobre la marcha".

"Al toque" it's more like a "immediately after".