大约有 44,300 项符合查询结果（耗时：0.0461秒） [XML]
Select top 10 records for each category
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228
If you are using SQL 2005 you can do something like this...
SELECT rs.Field1,rs.Field2
F...
How do I add multiple arguments to my custom template filter in a django template?
... example, if you want a filter that checks if variable X is in the list [1,2,3,4] you will want a template filter that looks like this:
{% if X|is_in:"1,2,3,4" %}
Now we can create your templatetag like this:
from django.template import Library
register = Library()
def is_in(var, args):
if...
How can I pad a value with leading zeros?
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72 Answers
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How comment a JSP expression?
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215
Pure JSP comments look like this:
<%-- Comment --%>
So if you want to retain the "="....
Python: access class property from string [duplicate]
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280
x = getattr(self, source) will work just perfectly if source names ANY attribute of self, incl...
How do I pick 2 random items from a Python set? [duplicate]
...currently have a Python set of n size where n >= 0. Is there a quick 1 or 2 lines Python solution to do it? For example, the set will look like:
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What's the difference between `=` and `
I'm using R 2.8.1 and it is possible to use both = and <- as variable assignment operators. What's the difference between them? Which one should I use?
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What do numbers using 0x notation mean?
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112
Literals that start with 0x are hexadecimal integers. (base 16)
The number 0x6400 is 25600.
6 ...
Complex numbers usage in python [closed]
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2 Answers
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