Hackers need to eat.

Suggestions

Kiwi convenience store is upen until 23:00. Yum.
The indian place up at Maridalsveien is quite good. Main dishes are 160-170 NOK. 20-25 minutes prep time on takeaway. +47 22201248. http://rdtandoori.com/st.html
Asian place in Møllergata is fast and cheap. Main dishes 110-130NOK.
Funky Fresh Foods @ DogA, Hausmannsgate 16. One of the best places for vegan food in Oslo. http://www.funkyfreshfoods.no/
Gourmet thai corner of Rosteds gate & Fredensborgveien. Great thai curry. Dishes around 100NOK. http://gourmetthai.no/
Nam Fah, on Nordre gate. Good Thai place. Around 110NOK. http://www.nam-fah.com/
Sushi on corner of Rosted gate and Deichmans gate. Prices vary but not the most expensive sushi in the city.
Pizza place across the street next to Kiwi. Pizzas, kebabs and falafels. They bake their own bread and pizza dough. 90-150NOK
Freddy Fuego has nice burritos. They serve meat, veggie and vegan styles. 90-150NOK depending on choices.
Peloton, a bar/café, has both normal and vegan pizza, coffee, and homemade ice cream at Torggata 35. https://www.pelotonbar.no/

Tips