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Select between two dates with Django

... Use the __range operator: ...filter(current_issue__isnull=True, created_at__range=(start_date, end_date)) share | improve this an...
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AngularJS : Factory and Service? [duplicate]

...ating between controllers like sharing data. Can use other dependencies Usually used when the service instance requires complex creation logic Cannot be injected in .config() function. Used for non configurable services If you're using an object, you could use the factory provider. Syntax: module...
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java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'

...ead: For a supplementary character, utf8 cannot store the character at all, while utf8mb4 requires four bytes to store it. Since utf8 cannot store the character at all, you do not have any supplementary characters in utf8 columns and you need not worry about converting characters or losi...
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Passing parameters in rails redirect_to

How do we pass parameters in redirect_to in rails? I know we can pass id using this: 9 Answers ...
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Javascript replace with reference to matched group?

I have a string, such as hello _there_ . I'd like to replace the two underscores with <div> and </div> respectively, using JavaScript . The output would (therefore) look like hello <div>there</div> . The string might contain multiple pairs of underscores. ...
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Why are #ifndef and #define used in C++ header files?

...he header is included, it checks if a unique value (in this case HEADERFILE_H) is defined. Then if it's not defined, it defines it and continues to the rest of the page. When the code is included again, the first ifndef fails, resulting in a blank file. That prevents double declaration of any iden...
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Get underlined text with Markdown

... I guess this is because underlined text is hard to read, and that it's usually used for hyperlinks. share | improve this answer | follow | ...
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Why is HttpClient BaseAddress not working?

...se class of my RestClient, it was almost invisible and got no attention at all, and I never saw the full url in at my breakpoints etc. – ProfK Dec 13 '16 at 14:32 ...
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How to create a density plot in matplotlib?

...with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the function covariance_factor of the gaussian_kde class. First, here is what you get without changing that function: However, if I use the following code: import...
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C# 4.0 optional out/ref arguments

Does C# 4.0 allow optional out or ref arguments? 9 Answers 9 ...