New Zealand happy to build depth despite ODI series defeat in Bangladesh

The Black Caps are without many first-choice players due to the involvement in the IPL and PSL and have been forced to dig deep into the playing resources.

Walter though takes the learnings as a massive positive as the tourists contend with extreme heat in Bangladesh.

"There's no downside to that type of experience for the players - whether they do well or poorly," Walter said. "Because there's so much to learn from it.

"So the skills get put under pressure by a good team. You either find your way through or not...but whatever happens as long as you're learning individually and as a collective, there will definitely be some massive learnings around those guys who have sat in the wings or waited for opportunities and then exposed to a quality opposition in testing conditions."

Walter said the return of Will O'Rourke is one of the biggest positives with the fast bowler completing all three ODIs after a lengthy injury lay-off.

The lanky paceman was constantly hitting speeds of close to 140kph and generally troubled the home batters with his bounce on unhelpful pitches.

"We've seen some nice performances - Will O'Rourke back on the field and bowling well again," Walter said. "He got better and better with every game that he played.

"We were managing him as best as we can. We had a sort of how many overs we wanted him to cover in this period. Obviously, the heat was a factor that we were aware of, but you can't quantify it, really.

"So, it was being aware of how we wanted to use Will with a far bigger picture in mind. So, it was a massive victory given the injury he has come back from and given the way he bowled."

Walter and his charges will look to go one better in Bangladesh with the three-match T20I series set to start on Monday.

READ MORE: Gary Kirsten: There is no doubt about the talent which Sri Lanka is known for