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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?

... How do you want the error message in the following case look like? AnyObject.GetANullObject().ToString(); private object GetANullObject() { return null; } No variable names to report here! ...
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How to write the Fibonacci Sequence?

...beginning of the function but of course there is a billin an done lines of error. Where should I be putting it? Thx – SD. Feb 3 '09 at 21:12 ...
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Difference of keywords 'typename' and 'class' in templates?

...ctual classes, you're better off adding a specialization to throw/cause an error for non-class types. If you want to limit use to particular classes, only specialize for them. In any case, such a stylistic distinction is too subtle to get the message across. – Potatoswatter ...
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How do I modify fields inside the new PostgreSQL JSON datatype?

...r the JSON object when the key is not used. If it's used, it will raise an error: SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,c}', jsonb '[2]') -- will yield jsonb '{"a":[null,{"b":[1],"c":[2]}]}', but SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,b}', jsonb '[2]') -- will raise SQLSTA...
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Do you (really) write exception safe code? [closed]

... (using std::numeric_limits<T>::max()) before doing the addition. My error would go in the "Normal failure vs. bug" section, that is, a bug. It doesn't invalidate the reasoning, and it does not mean the exception-safe code is useless because impossible to attain. You can't protect yourself aga...
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how do I use UIScrollView in Interface Builder?

... Deployment Target is 5.1) When I first did this I received the following error: Illegal Configuration:      Size type user defined runtime attributes with Xcode versions prior to 4.3      MainStoryboard.storyboard If you too get this error it is simple to fix: select the Story...
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Combine two data frames by rows (rbind) when they have different sets of columns

...er of dataframes (16) with different column names When I try this I get an error Error: Column ABC can't be converted from character to numeric. Is there a way to convert the columns first? – sar Mar 24 at 16:57 ...
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Creating and Update Laravel Eloquent

...fault value or its id column auto incremented one. Otherwise it will throw error when executing above example: Illuminate\Database\QueryException with message 'SQLSTATE[HY000]: General error: 1364 Field '...' doesn't have a default value (SQL: insert into `...` (`...`,.., `updated_at`, `created_at`)...
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Python debugging tips [closed]

...tparse LOGGING_LEVELS = {'critical': logging.CRITICAL, 'error': logging.ERROR, 'warning': logging.WARNING, 'info': logging.INFO, 'debug': logging.DEBUG} def main(): parser = optparse.OptionParser() parser.add_option('-l', ...
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Heroku NodeJS http to https ssl forced redirect

... 307 (redirect with same method) is probably better than a 400 error. – Beni Cherniavsky-Paskin Aug 19 '15 at 12:21 ...