From 15e7708bebf7826c127b5567f95e9a70dd3df27d Mon Sep 17 00:00:00 2001
From: Martin Reinecke <martin@mpa-garching.mpg.de>
Date: Thu, 2 Aug 2018 09:52:30 +0200
Subject: [PATCH] tweaks
---
nifty5/domain_tuple.py | 7 +++++++
nifty5/utilities.py | 4 ++--
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/nifty5/domain_tuple.py b/nifty5/domain_tuple.py
index 287192d9f..64d5b53ad 100644
--- a/nifty5/domain_tuple.py
+++ b/nifty5/domain_tuple.py
@@ -37,6 +37,7 @@ class DomainTuple(object):
via the factory function :attr:`make`!
"""
_tupleCache = {}
+ _scalarDomain = None
def __init__(self, domain, _callingfrommake=False):
if not _callingfrommake:
@@ -150,3 +151,9 @@ class DomainTuple(object):
for i in self:
res += "\n" + str(i)
return res
+
+ @staticmethod
+ def scalar_domain():
+ if DomainTuple._scalarDomain is None:
+ DomainTuple._scalarDomain = DomainTuple.make(())
+ return DomainTuple._scalarDomain
diff --git a/nifty5/utilities.py b/nifty5/utilities.py
index e7e7d1200..2ae4364c3 100644
--- a/nifty5/utilities.py
+++ b/nifty5/utilities.py
@@ -33,8 +33,8 @@ __all__ = ["get_slice_list", "safe_cast", "parse_spaces", "infer_space",
"my_product", "frozendict", "special_add_at"]
-def my_sum(terms):
- return reduce(lambda x, y: x+y, terms)
+def my_sum(iterable):
+ return reduce(lambda x, y: x+y, iterable)
def my_lincomb_simple(terms, factors):
--
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