大约有 40,000 项符合查询结果(耗时:0.0501秒) [XML]

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Way to ng-repeat defined number of times instead of repeating over array?

... Update (9/25/2018) Newer versions of AngularJS (>= 1.3.0) allow you to do this with only a variable (no function needed): <li ng-repeat="x in [].constructor(number) track by $index"> <span>{{ $index+1 }}</span> </li> $scope.number = 5; This was not poss...
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Substitute multiple whitespace with single whitespace in Python [duplicate]

...ce characters that are combined. To match unicode whitespace: import re _RE_COMBINE_WHITESPACE = re.compile(r"\s+") my_str = _RE_COMBINE_WHITESPACE.sub(" ", my_str).strip() To match ASCII whitespace only: import re _RE_COMBINE_WHITESPACE = re.compile(r"(?a:\s+)") _RE_STRIP_WHITESPACE = re.co...
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find() with nil when there are no records

... Yes, just do: Challenge.find_by_id(10) For Rails 4 and 5: Challenge.find_by(id: 10) share | improve this answer | ...
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Case-insensitive string comparison in C++ [closed]

...case-insensitive string comparison in C++ without transforming a string to all uppercase or all lowercase? 30 Answers ...
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What are CN, OU, DC in an LDAP search?

...N = Common Name OU = Organizational Unit DC = Domain Component These are all parts of the X.500 Directory Specification, which defines nodes in a LDAP directory. You can also read up on LDAP data Interchange Format (LDIF), which is an alternate format. You read it from right to left, the right-m...
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django : using select_related and get_object_or_404 together

Is there any way of using get_object_or_404 and select_related together or any other way to achieve the result of using these two together(except from putting it in try/except)?? ...
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How to check if a value exists in a dictionary (python)

... it wasn't necesarry after all, unless run on bigger dict. I guess overhead in values() is caused by copying the value list and in viewvalues() by maintaining the view alive. – soulcheck Nov 21 '11 at 17:12 ...
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Append TimeStamp to a File Name

... to a file using the Path class and string manipulation is not an issue at all. this only an alternative to DateTime.ToString Method (String) or string.Format("{0:yyyy-MM-dd_hh-mm-ss-tt}",DateTime.Now); – Joseph Jun 26 '17 at 11:50 ...
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Delegates in swift?

...interface MyCustomClass: UIViewController <ClassIWantToUseDelegate>, allowing you to init/configure the viewcontroller, as well as call delegate methods on the subviews? Something similar to this? – Mahmud Ahmad Aug 11 '16 at 22:32 ...
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How does free know how much to free?

... FYI, for example BSD has malloc_size() to reliably access the block size from an malloc()ed pointer. But there's no reliable, portable way. – laalto Oct 5 '09 at 7:53 ...