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Why does 2 == [2] in JavaScript?
... who determines that precedence. Is because [2] has a number as it's first item, so it converts to a number? Or is it that when passing an array into a[array] it tries to turn the array into a number first, then string. Who knows?
var a = { "abc" : 1 };
a[["abc"]] === a["abc"];
In this example, y...
In what order do static/instance initializer blocks in Java run?
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Best possible answer. Great job!
– Chip Uni
Jan 5 '10 at 17:08
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How to select a single field for all documents in a MongoDB collection?
...od returns all documents that match the query. In the result set, only the item and qty fields and, by default, the _id field return in the matching documents.
db.inventory.find( { type: 'food' }, { item: 1, qty: 1 } )
In this example from the folks at Mongo, the returned documents will contain onl...
What's better to use in PHP, $array[] = $value or array_push($array, $value)?
...ter, 300ms vs. 2000ms for 1M assignments on my machine. However, adding 20 items at once in array_push was about as fast as 20 $array[] =s.
– Elle
May 25 '15 at 17:13
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jQuery: Get height of hidden element in jQuery
...jackJoe I have been using this code for quite some time without issues. At best I would say I need $clone.width() instead of 'this'. Not $wrap since I want the size of the element inside the wrap. Wrapper could be 10000x10000px while the element I want to measure is still 30x40px for example.
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UIBarButtonItem with custom image and no border
I want to create a UIBarButtonItem with a custom image, but I don't want the border that iPhone adds, as my Image has a special border.
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Error: CUICatalog: Invalid asset name supplied: (null), or invalid scale factor : 2.000000
...n Xcode 6.4, this seems to occur when using "Selected Image" for a tab bar item in the storyboard, even if it's a valid image.
This doesn't actually seem to set the selected state image anyway, so it needs to be defined in User Defined Runtime Attributes, and removed from the SelectedImage attrib...
Combining two expressions (Expression)
... = "test";
Expression<Func<Coco, bool>> expr1 = p => p.Item1.Contains(text);
Expression<Func<Coco, bool>> expr2 = q => q.Item2.Contains(text);
Expression<Func<Coco, bool>> expr3 = UpdateParameter(expr2, expr1.Parameters[0]);
var expr4 = Exp...
Windows Explorer “Command Prompt Here” [closed]
...current folder's context menu, where you'll find the "command window here" item.
(Note that to see that menu item, you need to have the corresponding "power toy" installed, or you can create the right registry keys yourself to add that item to folders' context menus.)
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What is the difference between declarative and imperative programming? [closed]
... everything where it's odd", not "Step through the collection. Check this item, if it's odd, add it to a result collection."
In many cases, code will be a mixture of both designs, too, so it's not always black-and-white.
s...