大约有 19,000 项符合查询结果（耗时：0.0431秒） [XML]
DateTime2 vs DateTime in SQL Server
...
DATETIME2 has a date range of "0001 / 01 / 01" through "9999 / 12 / 31" while the DATETIME type only supports year 1753-9999.
Also, if you need to, DATETIME2 can be more precise in terms of time; DATETIME is limited to 3 1/3 milliseconds, while DATETIME2 ca...
Cannot truncate table because it is being referenced by a FOREIGN KEY constraint?
...ime.
– Tom Stickel
May 11 '17 at 20:01
1
And how would you do that? Example requests?
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Why am I merging “remote-tracking branch 'origin/develop' into develop”?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
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How does one write code that best utilizes the CPU cache to improve performance?
...re evicted. May I ask what sort of profiling tools give you this kind of information, and how?
– Dragon Energy
May 3 '15 at 19:25
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How to validate IP address in Python? [duplicate]
...ot work with all legal IP addresses: >>> socket.inet_aton("2001:660::1") Traceback (most recent call last): File "<stdin>", line 1, in <module> socket.error: illegal IP address string passed to inet_aton
– bortzmeyer
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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
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(For information about the new exception helper in Visual Studio 2017 see the end of this answer)
Consider this code:
String s = null;
Console.WriteLine(s.Length);
This will throw a NullReferenceException in the second line an...
C#: Raising an inherited event
... |
edited Jun 5 '12 at 15:01
answered Apr 16 '09 at 14:01
F...
Python __str__ versus __unicode__
... them for compatibility reasons. Generally, you should put all your string formatting in __unicode__(), and create a stub __str__() method:
def __str__(self):
return unicode(self).encode('utf-8')
In 3.0, str contains characters, so the same methods are named __bytes__() and __str__(). These b...
Why is it bad style to `rescue Exception => e` in Ruby?
...StandardError and you need a variable with the exception, you can use this form:
begin
# iceberg!
rescue => e
# lifeboats
end
which is equivalent to:
begin
# iceberg!
rescue StandardError => e
# lifeboats
end
One of the few common cases where it’s sane to rescue from Exceptio...
How to get string objects instead of Unicode from JSON?
...eritems()
}
# if it's anything else, return it in its original form
return data
Example usage:
>>> json_loads_byteified('{"Hello": "World"}')
{'Hello': 'World'}
>>> json_loads_byteified('"I am a top-level string"')
'I am a top-level string'
>>> json_load...