大约有 48,000 项符合查询结果(耗时:0.0751秒) [XML]

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How to create module-wide variables in Python? [duplicate]

...e true. But for variables that might contain a number value that might be 0, you can't just say if not variablename; in that case, you should explicitly test for None using the is operator. I modified the example to add an explicit None test. The explicit test for None is never wrong, so I defaul...
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JavaScript OR (||) variable assignment explanation

... | edited Feb 5 '12 at 20:43 Lightness Races in Orbit 350k6666 gold badges574574 silver badges955955 bronze badges ...
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Why does this Java program terminate despite that apparently it shouldn't (and didn't)?

... chain of events I lost $12 million of equipment. I've narrowed down over 40K lines in the faulty module to this: 5 Answers...
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django-debug-toolbar not showing up

...t won't load unless it's True. If it's still not working, try adding '127.0.0.1' to INTERNAL_IPS as well. UPDATE This is a last-ditch-effort move, you shouldn't have to do this, but it will clearly show if there's merely some configuration issue or whether there's some larger issue. Add the foll...
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CSS overflow-x: visible; and overflow-y: hidden; causing scrollbar issue

... 703 After some serious searching it seems i've found the answer to my question: from: http://www.b...
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Using the HTML5 “required” attribute for a group of checkboxes?

...xpression: $('div.checkbox-group.required :checkbox:checked').length > 0 which returns true if at least one element is checked. Based on that, you can implement your validation check. share | ...
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jQuery callback for multiple ajax calls

...tions) options = {}; numRequestToComplete = options.numRequest || 0; requestsCompleted = options.requestsCompleted || 0; callBacks = []; var fireCallbacks = function() { alert("we're all complete"); for (var i = 0; i < callBacks.length; i++...
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how to remove the dotted line around the clicked a element in html

... 200 Use outline:none to anchor tag class ...
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How can I add an animation to the activity finish()

... answered Jan 5 '12 at 11:40 GoofyaheadGoofyahead 5,53566 gold badges2525 silver badges3232 bronze badges ...
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How to debug template binding errors for KnockoutJS?

... | edited Jun 9 '14 at 22:00 Jeroen 50.2k2727 gold badges161161 silver badges258258 bronze badges answer...