大约有 5,100 项符合查询结果（耗时：0.0312秒） [XML]
creating a random number using MYSQL
...00 in this case) and the lower bound (100 in this case)
So to produce the range you need:
SELECT name, address, ROUND(100.0 + 400.0 * RAND()) AS random_number
FROM users
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Find and replace string values in list
...erent approaches, here are some timings:
In [1]: words = [str(i) for i in range(10000)]
In [2]: %timeit replaced = [w.replace('1', '<1>') for w in words]
100 loops, best of 3: 2.98 ms per loop
In [3]: %timeit replaced = map(lambda x: str.replace(x, '1', '<1>'), words)
100 loops, best ...
What is the difference between linear regression and logistic regression?
...
This function has a nice property, basically it maps any value to the range [0,1] which is appropiate to handle propababilities during the classificatin. For example in case of a binary classification g(X) could be interpreted as the probability to belong to the positive class. In this case nor...
How can you profile a Python script?
...' of '_lsprof.Profiler objects}
1 0.000 0.000 0.000 0.000 {range}
1 0.003 0.003 0.003 0.003 {sum}
EDIT: Updated link to a good video resource from PyCon 2013 titled
Python Profiling
Also via YouTube.
...
How to pretty print nested dictionaries?
...ascii' codec can't encode character u'\xf3' in position 50: ordinal not in range(128)
– wonderwhy
Aug 27 '14 at 13:20
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git -> show list of files changed in recent commits in a specific directory
...it log <from revision>.., e.g. git log abc123... Read more about the range format here: kernel.org/pub/software/scm/git/docs/…
– htanata
Jul 13 '16 at 17:38
add a comm...
Compare if two variables reference the same object in python
... the same integer object. Thus your example only works for numbers in this range. Try assigning something larger, i.e. 270. For more info look here
– ted
Jan 28 '16 at 13:57
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How do ports work with IPv6?
... ICMP [ICMPv6]. So basically, anything TCP/UDP related, including the port range (0-65535) remains unchanged.
Edit: Port 0 is a reserved port in TCP but it does exist. See RFC793
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How do I drop table variables in SQL-Server? Should I even do this?
...scope rules as int or varchar variables
The scope of a variable is the range of Transact-SQL statements that can reference the variable. The scope of a variable lasts from the point it is declared until the end of the batch or stored procedure in which it is declared.
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Provide an image for WhatsApp link sharing
...t correct. The Whatsapp app fetches the first 300.000 bytes (Http header: "Range: bytes=0-299999")
– Adriano Tornatore
Oct 12 '16 at 17:28
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