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How to check if an object is a generator object in python?
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You can use GeneratorType from types:
>>> import types
>>> types.GeneratorType
<class 'generator'>
>>> gen = (i for i in range(10))
>>> isinstance(gen, types.GeneratorType)
True
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Why is Scala's immutable Set not covariant in its type?
... the method works just like Set's. So there is nothing really stopping Set from being co-variant, except a design decision.
– Daniel C. Sobral
Jul 24 '09 at 2:44
6
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How do I invert BooleanToVisibilityConverter?
... In their documentation they say you can use their MapConverter to convert from Visibility enumeration to bool
<Label>
<Label.Visible>
<Binding Path="IsVisible">
<Binding.Converter>
<con:MapConverter>
<con:...
Why do my list item bullets overlap floating elements
...list won't flow around the floating image. The list will has a huge margin from top to the end if the image is very wide.
– yang
Jul 26 '14 at 21:10
2
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Multiple Models in a single django ModelForm?
...am trying to create a profile edit form. So I need to include some fields from the User model and the UserProfile model. Currently I am using 2 forms like this
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How to enable cross-origin resource sharing (CORS) in the express.js framework on node.js
...at will support cross-domain scripting, while still providing static files from a public directory. I'm using the express.js and am not really sure how to allow cross-domain scripting ( Access-Control-Allow-Origin: * ).
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Android: Scale a Drawable or background image?
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There is an easy way to do this from the drawable:
your_drawable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:drawable="@color/bg_color"/>
<...
What is the difference between CHARACTER VARYING and VARCHAR in PostgreSQL?
... difference.
The long answer: CHARACTER VARYING is the official type name from the ANSI SQL standard, which all compliant databases are required to support. VARCHAR is a shorter alias which all modern databases also support. I prefer VARCHAR because it's shorter and because the longer name feels pe...
What is Compass, what is sass…how do they differ?
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From Sass and Compass in Action, by Wynn Netherland, Nathan Weizenbaum, Chris Eppstein, and Brandon Mathis:
1.3 What is Compass?
Compass helps Sass authors write smarter stylesheets and empowers a community
of designers and ...
reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
...aranteed to be atomic on all .NET platforms.
My colleague is reasoning from false premises. Does that mean that their conclusions are incorrect?
Not necessarily. Your colleague could be giving you good advice for bad reasons. Perhaps there is some other reason why you ought to be using Interlo...