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Invalid argument supplied for foreach()

It often happens to me to handle data that can be either an array or a null variable and to feed some foreach with these data. ...
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How to get all count of mongoose model?

How can I know the count of a model that data has been saved? there is a method of Model.count() , but it doesn't seem to work. ...
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How to make a vertical line in HTML

...order-left: thick solid #ff0000; } <div class="verticalLine"> some other content </div> share | improve this answer | follow | ...
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Design Patterns: Abstract Factory vs Factory Method

... factories. I used Head First Design Patterns as my reference. I used yuml.me to diagram. Static Factory Is a class with a Static Method to product various sub types of Product. Simple Factory Is a class that can produce various sub types of Product. (It is better than the Static Factory. When...
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Preloading images with JavaScript

... add a comment  |  45 ...
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Getting values from query string in an url using AngularJS $location

...sible. $location.search() will return an object of key-value pairs, the same pairs as the query string. A key that has no value is just stored in the object as true. In this case, the object would be: {"test_user_bLzgB": true} You could access this value directly with $location.search().test_use...
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Entity Framework select distinct name

How can I do this SQL query with Entity Framework ? 8 Answers 8 ...
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How to stop event propagation with inline onclick attribute?

...ck="event.stopPropagation(); alert('you clicked inside the header');">something inside the header</span> For IE: window.event.cancelBubble = true <span onclick="window.event.cancelBubble = true; alert('you clicked inside the header');">something inside the header</span> ...
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How do I make a UITableViewCell appear disabled?

I know about UITableview: How to Disable Selection for Some Rows but Not Others and cell.selectionStyle = UITableViewCellSelectionStyleNone , but how do I make a cell (or any UIView for that matter) appear disabled (grayed-out) like below? ...
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Call a function from another file?

...ecause file is one of Python's core modules, so I suggest you change the name of your file. Note that if you're trying to import functions from a.py to a file called b.py, you will need to make sure that a.py and b.py are in the same directory. ...