大约有 44,300 项符合查询结果(耗时:0.0442秒) [XML]

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How do I write a short literal in C++?

... 82 ((short)2) Yeah, it's not strictly a short literal, more of a casted-int, but the behaviour is...
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How do I immediately execute an anonymous function in PHP?

... 121 For PHP7: see Yasuo Ohgaki's answer: (function() {echo 'Hi';})(); For previous versions: the o...
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Can you have if-then-else logic in SQL? [duplicate]

...e1 WHERE project = 1 ELSE IF ((SELECT COUNT(*) FROM table1 WHERE project = 2) > 0) SELECT product, price FROM table1 WHERE project = 2 ELSE IF ((SELECT COUNT(*) FROM table1 WHERE project = 3) > 0) SELECT product, price FROM table1 WHERE project = 3 ...
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How do I get user IP address in django?

... | edited May 23 '17 at 10:31 Community♦ 111 silver badge answered Jan 3 '11 at 4:08 ...
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Select top 10 records for each category

... 228 If you are using SQL 2005 you can do something like this... SELECT rs.Field1,rs.Field2 F...
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Create an enum with string values

... 26 Answers 26 Active ...
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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...
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How can I pad a value with leading zeros?

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How comment a JSP expression?

... 215 Pure JSP comments look like this: <%-- Comment --%> So if you want to retain the "="....
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Python: access class property from string [duplicate]

... 280 x = getattr(self, source) will work just perfectly if source names ANY attribute of self, incl...