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Can table columns with a Foreign Key be NULL?

... a little bit to remember what needs to be done. If the data submitted is cast or interpreted as an empty string, it will fail. However, by explicitly setting the value to NULL when INSERTING or UPDATING, you're good to go. But this is the fun of programming, isn't it? Creating our own problems a...
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ArrayList initialization equivalent to array initialization [duplicate]

...he source for Arrays.asList, it constructs an ArrayList, but by default is cast to List. So you could do this (but not reliably for new JDKs): ArrayList<String> list = (ArrayList<String>)Arrays.asList("Ryan", "Julie", "Bob") ...
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How do you simulate Mouse Click in C#?

... You need to cast the X and Y to uints. – Dibesjr Jan 5 '13 at 19:10 1 ...
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Insert new item in array on any position in PHP

...ht not behave the same for an array, an object, or null. For scalars, type-casting (array)$scalar is equivalent to array($scalar), but for an array, an object, or null, it will be ignored (array), convert to an array (object), or become an empty array (null) - see php.net/manual/en/… ...
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How to convert a Base64 string into a Bitmap image to show it in a ImageView?

... to you from API is Base64 Encoded and should be decoded first in order to cast it to a Bitmap object! -Take a look at your Base64 encoded String, If it starts with data:image/jpg;base64 The Base64.decode won't be able to decode it, So it has to be removed from your encoded String: final Str...
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How can I create an object based on an interface file definition in TypeScript?

... If you are using React, the parser will choke on the traditional cast syntax so an alternative was introduced for use in .tsx files let a = {} as MyInterface; https://www.typescriptlang.org/docs/handbook/jsx.html ...
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How can I convert a string to boolean in JavaScript?

... BTW, for 1 or 0 it should also cast for false or true – Miguel Mar 9 '18 at 18:12  |  show 5 more ...
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Update MongoDB field using value of another field

...lection or create a new one. Also for update operations that require "type casting" you will need client side processing, and depending on the operation, you may need to use the find() method instead of the .aggreate() method. MongoDB 3.2 and 3.0 The way we do this is by $projecting our documents ...
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Formula px to dp, dp to px android

...integer value.. The 0.5 is added and then the result of the calculation is cast as an int causing it to truncate the mantissa and leaving characteristic as a properly rounded integer value. – Kelly Copley Aug 24 '12 at 4:40 ...
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Validation failed for one or more entities while saving changes to SQL Server Database using Entity

..., I've got Date and time respectively. Could this be the reason? How can I cast to the appropriate datatype in the code before saving changes to database. ...