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Bogus foreign key constraint fail

I get this error message: 9 Answers 9 ...
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Force R not to use exponential notation (e.g. e+10)?

... bit of a grey area. You need to recall that R will always invoke a print method, and these print methods listen to some options. Including 'scipen' -- a penalty for scientific display. From help(options): ‘scipen’: integer. A penalty to be applied when deciding to print numer...
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EC2 instance has no public DNS

A guy I work with gave me the EC2 credentials to log onto his EC2 console. I was not the one who set it up. Some of the instances show a public dns name and others have a blank public DNS. I want to be able to connect to the instances that have a blank public DNS. I have not been able to figure out ...
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How to add Action Bar from support library into PreferenceActivity?

...etDelegate().setSupportActionBar(toolbar); } @Override public MenuInflater getMenuInflater() { return getDelegate().getMenuInflater(); } @Override public void setContentView(@LayoutRes int layoutResID) { getDelegate().setContentView(layoutResID); } ...
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How to use support FileProvider for sharing content to other apps?

... support library you have to manually grant and revoke permissions(at runtime) for other apps to read specific Uri. Use Context.grantUriPermission and Context.revokeUriPermission methods. For example: //grant permision for app with package "packegeName", eg. before starting other app via intent c...
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How to reload/refresh an element(image) in jQuery

Is it possible to reload an image with an identical file name from a server using jQuery? 12 Answers ...
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Regular Expression For Duplicate Words

... Makes me wonder; is it possible to do \0 too? (Where \0 is the whole regex, up to the current point OR where \0 refers to the whole regex) – Pindatjuh May 12 '10 at 22:37 ...
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what is the right way to treat Python argparse.Namespace() as a dictionary?

If I want to use the results of argparse.ArgumentParser() , which is a Namespace object, with a method that expects a dictionary or mapping-like object (see collections.Mapping ), what is the right way to do it? ...
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How can you strip non-ASCII characters from a string? (in C#)

... string s = "søme string"; s = Regex.Replace(s, @"[^\u0000-\u007F]+", string.Empty); share | improve this answer | ...
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Remove CSS from a Div using JQuery

... Put your CSS properties into a class, then do something like this: $("#displayPanel div").live("click", function(){ $(this).addClass('someClass'); }); Then where your 'other functionalities' are do something like: $("#myButton").click(function(){ $("#displayPanel...