I would strongly recommend that you get the exposure spot-on, in-camera, and not rely on Photoshop, Lightroom or other software for image manipulation/touch-up, other than to assign a profile, resize and complete print-step tasks. Reliance on heavy post manipulation only perpetuates an incompetent approach to photography and leads you directly to full digital photography. If that is your objective, well and good, but strive to get everything done in-camera rather than clacking away at a keyboard and romancing a mouse.
Here is no black or white approach in digital photography. And here is limit of digital sensors, metering in many cameras. To strongly recommend exposure as spot-on it has to be digital sensor with ideal dynamic range and very intelligent metering. Which even modern digital cameras lack of.
So, in real world digital photography spot-on often not exist due to limitations of digital sensors.
From my close to two hundred thousands frames and all kind of photography with digital cameras experience over decade and common knowledge some of those methods are:
Shot it to the right - situation with low light and high ISO. Overexpose, bring it to normal in PP. It allows to lower high ISO noise.
Dial exposure to -2 or so. Known trick to get different look in digital BW photography. It will require PP.
Expose for highlights, bring up darks and shadows in PP. Very common method these days to avoid clipping of image information in very common scenario - bright sky, dark foreground. LR will give correct image without noise with one mouse click.
It is nothing new and well known techniques for situations then digital sensor, metering is not allowing you yours spot-on mode.
You know, photography is not always about spending your time to get perfect exposure. Street photography, for example.
And I do prefer to take pictures which are usable SOOC, BTW.