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Using %f with strftime() in Python to get microseconds
I'm trying to use strftime() to microsecond precision, which seems possible using %f (as stated here ). However when I try the following code:
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MySQL vs MongoDB 1000 reads
...ssuming that all indexes are in memory (which is harder since there are 20 times more of them) is about 20 range lookups.
These range lookups are likely comprised of random IO — different tables will definitely reside in different spots on disk, and it's possible that different rows in the same r...
How to use timeit module
I understand the concept of what timeit does but I am not sure how to implement it in my code.
14 Answers
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Inserting a Python datetime.datetime object into MySQL
I have a date column in a MySQL table. I want to insert a datetime.datetime() object into this column. What should I be using in the execute statement?
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How to change Git log date formats
...nd’s --date option.
--date=relative shows dates relative to the current time, e.g. "2 hours ago".
--date=local shows timestamps in user’s local timezone.
--date=iso (or --date=iso8601) shows timestamps in ISO 8601 format.
--date=rfc (or --date=rfc2822) shows timestamps in RFC 2822 format,
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Using str_replace so that it only acts on the first match?
... It is "hacky" in the sense that it takes considerably more time to figure out what's going on. Also if it was clear code, it wouldn't have been mentioned that the code has an error. If it's possible to make a mistake in such a small snippet, it's way too hacky already.
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Smarty中date_format日期格式化详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...或缩写
%% - 文字上的 `%' 字符。
而在smarty模板中，如$time是php文件中assign过来的时间戳，在模板文件中写法为：
<{$time|date_format:'%Y-%m-%d %H:%M:%S'}> ，同样对应的输出格式为：“年-月-日 时：分：秒”。
例子：
<?php
//导入...
how do I check in bash whether a file was created more than x time ago?
I want to check in linux bash whether a file was created more than x time ago.
8 Answers
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Dictionary vs Object - which is more efficient and why?
...aved because __dict__ is not created for each instance.
So does this save time as well as memory?
Comparing the three approaches on my computer:
test_slots.py:
class Obj(object):
__slots__ = ('i', 'l')
def __init__(self, i):
self.i = i
self.l = []
all = {}
for i in range(1000000):
all...
Fastest way to check if string contains only digits
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Parsing a number definitely takes more time than just checking each digit, as you're performing base conversion.
– user684934
Sep 18 '11 at 11:21
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