On 01/24/2013 03:13 PM, Christian Inci wrote:
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Subject: Feature Request: expand list/tuple in 'if (... in ...):' ...
expand list/tuple in 'if (... in ...):' on compile-time if the list/tuple
contains only static values.
test1: list is expanded manually.
test2: list is not expanded.
The output of the testcase is:
test1: timediff: 0.205533
test2: timediff: 17.567185
Testcase:
from time import time
cdef tuple INT_TUPLE = (0x66, 0x67, 0x2e,
0x36, 0x3e, 0x26, 0x64,
0x65, 0xf2, 0xf3, 0xf0)
How do you know that INT_TUPLE isn't reassigned to something else?
Dag Sverre
cpdef test():
cdef unsigned int i
cdef unsigned short j # 'unsigned char j' won't work for some reason
cdef double start_time
start_time = time()
for i in range(0x50000):
for j in range(256):
if (j == 0x66 or j == 0x67 or j == 0x2e or j == 0x36 or j == 0x3e
or j == 0x26 or j == 0x64 or j == 0x65 or j == 0xf2 or j == 0xf3 or j == 0xf0):
pass
print("test1: timediff: {0:f}".format(time()-start_time))
start_time = time()
for i in range(0x50000):
for j in range(256):
if (j in INT_TUPLE):
pass
print("test2: timediff: {0:f}".format(time()-start_time))
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