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Does Python optimize tail recursion?
.... if n == 0:
... return csum
... n, csum = n - 1, csum + n # Update parameters instead of tail recursion
>>> trisum(1000,0)
500500
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Huawei, logcat not showing the log for my app?
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edited Feb 5 '18 at 5:20
copolii
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CSS endless rotation animation
...ting 2s linear infinite;
}
<div
class="rotating"
style="width: 100px; height: 100px; line-height: 100px; text-align: center;"
>Rotate</div>
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time.sleep — sleeps thread or process?
...Thread
class worker(Thread):
def run(self):
for x in xrange(0,11):
print x
time.sleep(1)
class waiter(Thread):
def run(self):
for x in xrange(100,103):
print x
time.sleep(5)
def run():
worker().start()
waiter().start(...
Removing pip's cache?
I need to install psycopg2 v2.4.1 specifically. I accidentally did:
17 Answers
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Switch statement: must default be the last case?
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10 Answers
10
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Switching to a TabBar tab view programmatically?
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12 Answers
12
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Why should eval be avoided in Bash, and what should I use instead?
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152
There's more to this problem than meets the eye. We'll start with the obvious: eval has the p...