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Why does Oracle 9i treat an empty string as NULL?

...'t do much to tell me why this is the case. As I understand the SQL specifications, ' ' is not the same as NULL -- one is a valid datum, and the other is indicating the absence of that same information. ...
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window.location.reload with clear cache [duplicate]

...o your head: <meta http-equiv="Cache-control" content="no-cache"> If you want to remove the document from cache, expires meta tag should work to delete it by setting its content attribute to -1 like so: <meta http-equiv="Expires" content="-1"> http://www.metatags.org/meta_http_equi...
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What is the difference between a.getClass() and A.class in Java?

...that there would be performance or other subtle benefits to using both in different circumstances (just like there are with Class.forName() and ClassLoader.loadClass() . ...
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C# DateTime.Now precision

I just ran into some unexpected behavior with DateTime.UtcNow while doing some unit tests. It appears that when you call DateTime.Now/UtcNow in rapid succession, it seems to give you back the same value for a longer-than-expected interval of time, rather than capturing more precise millisecond incre...
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How might I find the largest number contained in a JavaScript array?

... Ah, but now it has the SO Sticker of Quality affixed to it in an only slightly-crooked fashion! – Shog9 Sep 4 '09 at 14:26 ...
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How to print number with commas as thousands separators?

...ython ≥2.7 f'{value:n}' # For Python ≥3.6 Reference Per Format Specification Mini-Language, The ',' option signals the use of a comma for a thousands separator. For a locale aware separator, use the 'n' integer presentation type instead. ...
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Can I bind an array to an IN() condition?

I'm curious to know if it's possible to bind an array of values to a placeholder using PDO. The use case here is attempting to pass an array of values for use with an IN() condition. ...
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Creating and Update Laravel Eloquent

What's the shorthand for inserting a new record or updating if it exists? 13 Answers 1...
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MbUnit under Linux, used within an F# project?

... have of Gallio, but you may try the Gallio bundle nuget from here and see if you get different results with this version: https://www.nuget.org/packages/GallioBundle/3.4.14. See this post: https://stackoverflow.com/a/21185517/9798633 2) Make sure your tests are compiled with the same version of Mb...
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Why use double indirection? or Why use pointers to pointers?

...t of bio-libraries (a ??lol), you can use char ******lol ... ... yes, I know these might not be the best data structures Usage example with a very very very boring lol #include <stdio.h> #include <stdlib.h> #include <string.h> int wordsinsentence(char **x) { int w = 0; ...