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What is the difference between a shim and a polyfill?

Both seem to be used in web development circles, see e.g. HTML5 Cross Browser Polyfills , which says: 6 Answers ...
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How do I make a simple makefile for gcc on Linux?

... Interesting, I didn't know make would default to using the C compiler given rules regarding source files. Anyway, a simple solution that demonstrates simple Makefile concepts would be: HEADERS = program.h headers.h default...
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What is the difference between Pan and Swipe in iOS?

Sounds simple .. Hold the Trackpad, move the finger, release .. But somehow swipe is not being triggered (pan is triggered instead) ...
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Configure nginx with multiple locations with different root folders on subdomain

I'm looking to serve the root url of a subdomain and directory of a subdomain to two different folders on my server. Here is the simple set-up that I have and is not working... ...
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How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly

I have a dataframe with ~300K rows and ~40 columns. I want to find out if any rows contain null values - and put these 'null'-rows into a separate dataframe so that I could explore them easily. ...
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Android adding simple animations while setvisibility(view.Gone)

I have designed a simple layout.I have finished the design without animation, but now I want to add animations when textview click event and I don't know how to use it. Did my xml design looks good or not? Any suggestions would be appreciated. ...
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In git, what is the difference between merge --squash and rebase?

I'm new to git and I'm trying to understand the difference between a squash and a rebase. As I understand it you perform a squash when doing a rebase. ...
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Convert columns to string in Pandas

I have the following DataFrame from a SQL query: 5 Answers 5 ...
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What are the differences between a UIView and a CALayer?

Both have most of the same attributes, both support different kind of animations, both represent different data. What are the differences between a UIView and a CALayer? ...
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Argparse optional positional arguments?

I have a script which is meant to be used like this: usage: installer.py dir [-h] [-v] 3 Answers ...