大约有 31,000 项符合查询结果(耗时:0.0300秒) [XML]

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'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?

..."no", and (skips b completely, it is not evaluated at all, and) says: a is my result (NOT: False is my result). If a doesn't answer, and asks it: what is your length? (Again, you can customize this as an author of a's class). If a answers 0, and does the same as above - considers it false (NOT Fals...
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Default string initialization: NULL or Empty? [closed]

I have always initialized my strings to NULL, with the thinking that NULL means the absence of a value and "" or String.Empty is a valid value. I have seen more examples lately of code where String.Empty is considered the default value or represents no value. This strikes me as odd, with the newly...
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Creating email templates with Django

... a mailchimp etc. set of templates for transactional, templated emails for my own project). It is still a work-in-progress though, but for the example above, you would do: from templated_email import send_templated_mail send_templated_mail( 'email', 'from@example.com', ['to@...
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Best way to store a key=>value array in JavaScript?

... That's just what a JavaScript object is: var myArray = {id1: 100, id2: 200, "tag with spaces": 300}; myArray.id3 = 400; myArray["id4"] = 500; You can loop through it using for..in loop: for (var key in myArray) { console.log("key " + key + " has value " + myArray[key...
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The ViewData item that has the key 'MY KEY' is of type 'System.String' but must be of type 'IEnumera

..."populate it again"...I have a fairly robust system in place for composing my view models, but I had completely forgotten to call it. Thus, the property wasn't populated and I received this (rather ambiguous) message no matter what I tried. – Tim Medora Dec 25 ...
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“Could not find bundler” error

...nd see if it shows up. If it does not, you need to install it as listed in my answer. – ardavis Mar 19 '13 at 19:21 10 ...
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Razor HtmlHelper Extensions (or other namespaces for views) Not Found

... It's not working for me. I'm using MVC 3 RC , I added my namespace to the web.config in my views folder. Still can't see my extensions in Razor page. Event putting @using <extensionname> doesn't work. @ TWith2Sugars I can't even find System.Web.WebPages.Razor to add , I a...
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Celery Received unregistered task of type (run example)

... +1 for --loglevel=DEBUG, there was a syntax error in my task. – Jacob Valenta Dec 11 '13 at 19:51 14 ...
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How do I import a Swift file from another Swift file?

I simply want to include my Swift class from another file, like its test 13 Answers 13...
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How to delete a file via PHP?

How do I delete a file from my server with PHP if the file is in another directory? 6 Answers ...