What kind of damage after seedlings left out last night?

Hi Everyone! I am new to D's G. I will edit my profile shortly. In the meantime, I have an immediate question in order to quell my fears. I didn't find the info I was looking for after searching the forums. I hope this is the correct place to post this question.
I have snow and sugar snap peas, pole beans, squash, cukes, melon, okra, brussels sprouts, cabbage, tomatoes, beets, zinnias, marigolds, celosia, bells of Ireland and various herbs, all thriving. Since leaving my seedlings on the patio, the lowest evening temp has been 50 degrees with daytime temps averaging 65 degrees. Unbeknownst to me, it got down to 40 degrees last night. I brought them inside this morning and they all seem fine. I'm wondering if that was enough of a temperature drop to cause long-term damage?
I would love any feedback you all may have for me (other than watch the hour by hour temps on weather.com before bed, doh!!)

Hi SoJo and welcoem to Dave's.

I would copy and past yoru question over in the veggie forum.

The experts are there for those kind of plants.

http://davesgarden.com/community/forums/f/yumyum/all/

Will do, thanks much!!

Sujo 16
Relax, they will be fine with no long term damage. They may just have slacked off in growth, but with warmer temp, they will continue like nothing happened. You had no frost or freezing weather and they look ok to you so I wouldnl't worry. They will be fine.

The beans & cucumbers would definitely show frost damage if it it froze. Your patio area may have been sheltered enough to prevent the from from coming down. If you have other cold nights forecasted, you may want to cover them with a bed sheet. The cucumbers, squash, beans, melons and some of your herbs may need to be brought indoors. The others can handle a mild frost.