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Checking if a double (or float) is NaN in C++
...se IEEE floating point, this trick should work. But I can't guarantee that it will work in practice. Check with your compiler, if in doubt.
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ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
...iewModel : ViewModelBase
{
public ObservableCollection<EntityViewModel> ContentList
{
get { return _contentList; }
}
public CollectionViewModel()
{
_contentList = new ObservableCollection<EntityViewModel>();
_contentList.Collection...
How do I look inside a Python object?
...and dir() are particularly useful for inspecting the type of an object and its set of attributes, respectively.
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Installing older version of R package
...ackage that are not yet reflected in Rpy2 (for example, see this post (Edit: Link is now dead)).
7 Answers
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Scala best way of turning a Collection into a Map-by-key?
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edited Oct 20 '16 at 10:47
answered Jul 14 '10 at 18:56
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Double Negation in C++
I just came onto a project with a pretty huge code base.
14 Answers
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Can Objective-C switch on NSString?
Is there a more intelligent way to rewrite this?
13 Answers
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not None test in Python [duplicate]
...This idiom has particular uses in the case of declaring keyword functions with default parameters. is tests identity in Python. Because there is one and only one instance of None present in a running Python script/program, is is the optimal test for this. As Johnsyweb points out, this is discussed i...
How to disable python warnings
I am working with code that throws a lot of (for me at the moment) useless warnings using the warnings library. Reading (/scanning) the documentation I only found a way to disable warnings for single functions . But I don't want to change so much of the code.
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Remove duplicates from an array of objects in JavaScript
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A primitive method would be:
var obj = {};
for ( var i=0, len=things.thing.length; i < len; i++ )
obj[things.thing[i]['place']] = things.thing[i];
things.thing = new Array();
for ( var key in obj )
things.thing.push(o...