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Set value to NULL in MySQL

...emname')"); So the $quantity is outside of the main string. My sql table now accepted to record null quantity instead of 0 share | improve this answer | follow ...
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Java Interfaces/Implementation naming convention [duplicate]

... interface implementations (which may also be proxied - your code doesn't know!). Even if you only have two implementations - one a Mock for testing, and one that gets injected into the actual production code - this doesn't make having an interface superfluous. A well documented interface establis...
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using lodash .groupBy. how to add your own keys for grouped output?

... Using _.chain is considered a bad practice now. – Pawel Jan 5 '18 at 13:18  |  show 3 more comments ...
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Facebook Access Token for Pages

...e_pages permission (you may need the user_events permission too, not sure) Now access the me/accounts connection and copy your page's access_token Click on your page's id Add the page's access_token to the GET fields Call the connection you want (e.g.: PAGE_ID/events) ...
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How to sort an ArrayList in Java [duplicate]

... return fruit1.fruitName.compareTo(fruit2.fruitName); } }); Now your fruits list is sorted based on fruitName. share | improve this answer | follow ...
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How to pass dictionary items as function arguments in python? [duplicate]

...l cityName = city standardName = standard studentName = name Now you can use ** when you call the function: data = {'school':'DAV', 'standard': '7', 'name': 'abc', 'city': 'delhi'} my_function(**data) and it will work as you want. P.S. Don't use reserved words such as class.(e.g.,...
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How to limit setAccessible to only “legitimate” uses?

...-so-ever. The singleton pattern (putting doubts about its merits aside) is now impossible to enforce. If that worries you, then I suppose you need to worry. But really you should not be trying to force other programmers to respect your design decisions. If people are stupid enough to use reflect...
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jQuery to retrieve and set selected option value of html select element

...Down list using SELECT tag like as follows, <select id="Country"> Now if you want to see what is the selected value from drop down using JQuery then, simply put following line to retrieve that value.. var result= $("#Country option:selected").text(); it will work fine. ...
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Getting random numbers in Java [duplicate]

...it becomes 0.0 to 49.999... when you add 1, it becomes 1.0 to 50.999..., now when you truncate to int, you get 1 to 50. (thanks to @rup in comments). leepoint's awesome write-up on both the approaches. 2. Using Random class in Java. Random rand = new Random(); int value = rand.nextInt(50); ...
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linq query to return distinct field values from a list of objects

... Now I can see there is an overload of Distinct in LINQ which take an IEqualityComparer as parameter and return a list of distinct objects depending upon the implementation of methods in IEqualityComparer ...