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Blank HTML SELECT without blank item in dropdown list

... Actually IE 11 does display the "hidden" option. – Edward Olamisan Oct 15 '13 at 18:47 6 ...
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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”

...ON DUPLICATE KEY UPDATE. If you use INSERT IGNORE, then the row won't actually be inserted if it results in a duplicate key. But the statement won't generate an error. It generates a warning instead. These cases include: Inserting a duplicate key in columns with PRIMARY KEY or UNIQUE constrain...
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Default value of BOOL

...nce variables of Objective-C objects are always set to 0 (or nil) when you allocate an object" and I cannot find any other, clearer, reference, so it's all a bit contradictory to me. – Kristof Van Landschoot Sep 9 '13 at 8:47 ...
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What is the proper way to check if a string is empty in Perl?

... situation where you haven't already guarded against undef, then the catch-all for "non-empty" that won't warn is if (defined $str and length $str). share | improve this answer | ...
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Create an instance of a class from a string

...of a class based on the fact I know the name of the class at runtime. Basically I would have the name of the class in a string. ...
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NSLog/printf specifier for NSInteger?

... z and t modifiers to handle NSInteger and NSUInteger without warnings, on all architectures. You want to use %zd for signed, %tu for unsigned, and %tx for hex. This information comes courtesy of Greg Parker. Original answer: The official recommended approach is to use %ld as your specifier, a...
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CSS text-overflow: ellipsis; not working?

... Note: white-space: nowrap is actually not necessary. We can still see the ellipses even without it. For multiple lines text-overflow, see this SO – gfaceless Jul 9 '15 at 10:38 ...
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How to test if list element exists?

... This is actually a bit trickier than you'd think. Since a list can actually (with some effort) contain NULL elements, it might not be enough to check is.null(foo$a). A more stringent test might be to check that the name is actually defin...
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How to get just the responsive grid from Bootstrap 3?

...nd you'll get the CSS and JS that you chose. Open up the CSS and remove all but the grid. They include some normalize stuff too. And you'll need to adjust all the styles on your site to box-sizing: border-box - http://www.w3schools.com/cssref/css3_pr_box-sizing.asp ...
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HTML/Javascript change div content

...L rather than innerText and textContent because innerHTML is compatible to all browsers. – Minh Triet Jun 26 '13 at 1:59 ...