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Rails where condition using NOT NIL
...tween tables, I prefer to leverage merge so that I can use existing scopes more easily.
Foo.includes(:bar).merge(Bar.where.not(id: nil))
Also, since includes does not always choose a join strategy, you should use references here as well, otherwise you may end up with invalid SQL.
Foo.includes(:b...
jquery if div id has children
.../ do something
}
Note that :parent also considers an element with one or more text nodes to be a parent.
Thus the div elements in <div>some text</div> and <div><span>some text</span></div> will each be considered a parent but <div></div> is not a pa...
Google Map API v3 — set bounds and center
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How to delete projects in IntelliJ 12?
...e a project from the Recent Projects list.
Vote for this issue to make it more obvious and user friendly.
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How do I run multiple background commands in bash in a single line?
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Upload files with HTTPWebrequest (multipart/form-data)
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How to suppress Update Links warning?
...everyday while sending my workbooks to 3rd party, and now I'm prepared), 2 more things learned:
Excel options DO matter, regardless of version - especially when we come to VBA solutions.
Every trouble has short and elegant solution - together with not obvious and complicated one. Just one more pro...
python numpy ValueError: operands could not be broadcast together with shapes
...done element-wise, but one or both of the values can be expanded in one or more dimensions to make them compatible. This operation are called broadcasting. Dimensions where size is 1 or which are missing can be used in broadcasting.
In the example above the dimensions are incompatible, because:
97...
What are inline namespaces for?
...ns were in the surrounding namespace (inline namespaces can be nested, so "more-nested" names percolate up all the way to the first non-inline namespace and look and act as if their declarations were in any of the namespaces in between, too).
As an example, consider the STL implementation of vector...
Position icons into circle
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2020 solution
Here's a more modern solution I use these days.
I start off by generating the HTML starting from an array of images. Whether the HTML is generated using PHP, JS, some HTML preprocessor, whatever... this matters less as the basic idea ...