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How do I merge a list of dicts into a single dict?
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In case of Python 3.3+, there is a ChainMap collection:
>>> from collections import ChainMap
>>> a = [{'a':1},{'b':2},{'c':1},{'d':2}]
>>> dict(ChainMap(*a))
{'b': 2, 'c': 1, 'a': 1, 'd': 2}
Also see:
What is the purpose of collections.ChainMap?
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Programmatically generate video or animated GIF in Python?
I have a series of images that I want to create a video from. Ideally I could specify a frame duration for each frame but a fixed frame rate would be fine too. I'm doing this in wxPython, so I can render to a wxDC or I can save the images to files, like PNG. Is there a Python library that will al...
Prevent Android activity dialog from closing on outside touch
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To prevent dialog box from getting dismissed on back key pressed use this
dialog.setCancelable(false);
And to prevent dialog box from getting dismissed on outside touch use this
dialog.setCanceledOnTouchOutside(false);
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What is the purpose of std::make_pair vs the constructor of std::pair?
...e passed to it, without you needing to tell it. That's what I could gather from various docs anyways.
See this example from http://www.cplusplus.com/reference/std/utility/make_pair/
pair <int,int> one;
pair <int,int> two;
one = make_pair (10,20);
two = make_pair (10.5,'A'); // ok: imp...
Convert to/from DateTime and Time in Ruby
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You'll need two slightly different conversions.
To convert from Time to DateTime you can amend the Time class as follows:
require 'date'
class Time
def to_datetime
# Convert seconds + microseconds into a fractional number of seconds
seconds = sec + Rational(usec, 10**6)...
C++ Modules - why were they removed from C++0x? Will they be back later on?
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From the State of C++ Evolution (Post San Francisco 2008), the Modules proposal was categorized as "Heading for a separate TR:"
These topics are deemed too important to wait for another standard after C++0x before being p...
How to replace (or strip) an extension from a filename in Python?
...how to remove an extension using pathlib (Python >= 3.4):
>>> from pathlib import Path
>>> filename = Path('/some/path/somefile.txt')
>>> filename_wo_ext = filename.with_suffix('')
>>> filename_replace_ext = filename.with_suffix('.jpg')
>>> print(...
npm install from Git in a specific version
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A dependency has to be available from the registry to be installed just by specifying a version descriptor.
You can certainly create and use your own registry instead of registry.npmjs.org if your projects shouldn't be shared publicly.
But, if it's not in ...
Set TextView text from html-formatted string resource in XML
...r code:
TextView foo = (TextView)findViewById(R.id.foo);
foo.setText(Html.fromHtml(getString(R.string.nice_html)));
IMHO, this is several orders of magnitude nicer to work with :-)
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improv...
How to remove files that are listed in the .gitignore but still on the repository?
...nored, i added them to the .gitignore but, of course, they are not removed from my repository.
6 Answers
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