One indeed needs to be careful with the different dynamic range of digital camera and different films. Still - one may use the spot metering of the camera to estimate the contrast range of the scene and then decide on the exposure.

Of course as mentioned by Greg - you need to check how does ISO 100 of your DSLR compares to ISO 100 of your film (or light meter you are used to - if you want to compare those).

I have and older DSLR which less dynamic range than the modern ones so I am closer to slide film response