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Why does X[Y] join of data.tables not allow a full outer join, or a left join?
... suggestion with unique() is a great help. That ought to be in the FAQ. I know Matthew Dowle "designed it for his own use, and he wanted it that way." (FAQ 1.9), but I thought X[Y,all=T] could be an elegant way to specify a full outer join within the data.table X[Y] syntax. Or X[Y,all.x=T] for the ...
Making custom right-click context menus for my web-app
...k. Somehow they override the browser's behavior of drop-down menu, and I'm now sure exactly how they do it. I found a jQuery plugin that does this, but I'm still curious about a few things:
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How to validate an Email in PHP?
How can I validate the input value is a valid email address using php5. Now I am using this code
7 Answers
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How to edit incorrect commit message in Mercurial? [duplicate]
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Update: Mercurial has added --amend which should be the preferred option now.
You can rollback the last commit (but only the last one) with hg rollback and then reapply it.
Important: this permanently removes the latest commit (or pull). So if you've done a hg update that commit is no longer i...
Why can't a 'continue' statement be inside a 'finally' block?
... {
try
{
throw new Exception("What now?");
}
finally
{
continue;
}
}
}
catch
{
//do I get hit?
}
}
The Dreaded Goto
public static void Goto()
{
foreach(var i...
Equation for testing if a point is inside a circle
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if dx>R then
return false.
if dy>R then
return false.
Now imagine a square diamond drawn inside this circle such that it's vertices touch this circle:
if dx + dy <= R then
return true.
Now we have covered most of our space and only a small area of this circle remains ...
npm windows install globally results in npm ERR! extraneous
...nt-end-developer#front_end_developers '.
You should not have to look there now, but I thought it could be good to share the site.
So far so good, til it comes to the global installing. (Ok, some errors I had to figure out, but now I have working npm).
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Autoresizing issue of UICollectionViewCell contentView's frame in Storyboard prototype cell (Xcode 6
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Only this works now, you have to do it just for IOS 8, and I have to call it after each dequeue ! But this also is not ideal solution because multiple selection do not work as it should visually...
– Renetik
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Why are data transfer objects (DTOs) an anti-pattern?
...the data in a slightly different format than a native business object.
I know this is a Java-oriented question, but in .NET languages anonymous types, serialization, and LINQ allow DTOs to be constructed on-the-fly, which reduces the setup and overhead of using them.
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How can I filter a date of a DateTimeField in Django?
...n't work with datetimefields. The second alternative works ;). If someone knows another method please answer
– Xidobix
Aug 23 '09 at 4:14
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