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What is “above-the-fold content” in Google Pagespeed?

Until recently, my site (www.heatexchangers.ca) scored 98% on Google Page Speed. There were a couple of things I could do nothing about such as the query string from web fonts. I was very happy with this as this represented all that I could do. ...
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Android Task Affinity Explanation

What exactly is the attribute taskAffinity used for? I have gone through the documentation but I couldn't understand much. ...
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Is there any way to view the currently mapped keys in Vim?

Basically, I'd like to view all of the keys maps made in the current buffer by all of plugins, vimrc, etc, in the current buffer. Is there anyway to do this? ...
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What is the purpose of the -nodes argument in openssl?

What is the purpose of the -nodes argument in openssl? 2 Answers 2 ...
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Mercurial (hg) commit only certain files

I'm trying to commit only certain files with Mercurial. Because of of hg having auto-add whenever I try to commit a change it wants to commit all files. But I don't want that because certain files are not "ready" yet. ...
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“Server” vs “Data Source” in connection string

I'm new to SqlServer, right now I have SqlLocalDb installed to work locally. Good, but I can see two connection strings typically and both works: ...
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passing several arguments to FUN of lapply (and others *apply)

I have a question regarding passing multiple arguments to a function, when using lapply in R . 4 Answers ...
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Do NSUserDefaults persist through an Update to an app in the Appstore?

Is this the case? Do NSUserDefaults get reset when you submit an update to an app on the App Store, or are they reset? 6 An...
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multiprocessing.Pool: When to use apply, apply_async or map?

I have not seen clear examples with use-cases for Pool.apply , Pool.apply_async and Pool.map . I am mainly using Pool.map ; what are the advantages of others? ...
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Compress files while reading data from STDIN

Is it possible to compress (create a compressed archive) data while reading from stdin on Linux? 3 Answers ...