I am plotting a categorical dataset and want to use distinctive colors to represent different categories. Given a number n , how can I get n number of MOST distinctive colors in R? Thanks. ...

...ing) Result of this is a collection of Model objects. Not plain ratings. And from uniq's point of view, they are completely different. You can use this: Model.select(:rating).map(&:rating).uniq or this (most efficient) Model.uniq.pluck(:rating) # rails 5+ Model.distinct.pluck(:rating) U...

I have a simple setter method for a property and null is not appropriate for this particular property. I have always been torn in this situation: should I throw an IllegalArgumentException , or a NullPointerException ? From the javadocs, both seem appropriate. Is there some kind of an understood...

... I have tried both ways, and from the Edit|Advanced menu, and they are not doing anything to my source code. Other options like line indent are working. What could be wrong? – Chucky Jul 12 '13 at 11:06 ...

... I upgrade all my python packages from requirements.txt file using pip command? 13 Answers ...

...earranged array. You can see in you example you are deleting the value '3' and leaving the value '2' when you should be deleting only values '1' and '2' – NotGaeL Aug 23 '13 at 18:14 ...

I am calling a REST service with a JSON request and it responds with a HTTP 415 "Unsupported Media Type" error. 15 Answe...

... I'm afraid this isn't possible with plain CSS, and won't be possible to make completely cross-browser compatible. However, using a jQuery plugin, you could style the dropdown: https://www.filamentgroup.com/lab/jquery-ui-selectmenu-an-aria-accessible-plugin-for-styling-a...

... suggested. But beware, this operator will throw an error if the first operand is a number since it thinks will be adding and not concatenating. To resolve this issue just add '' in front. For example someNumber + 'someString' + .... + lastVariableToConcatenate will raise an error BUT '' + someNu...

... Try this: // save index and top position int index = mList.getFirstVisiblePosition(); View v = mList.getChildAt(0); int top = (v == null) ? 0 : (v.getTop() - mList.getPaddingTop()); // ... // restore index and position mList.setSelectionFromTop(in...