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Studies on optimal code width?
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Actually, the 80-column thing long precedes DOS. It comes from card punches, which were 80-column devices.
And to kind of answer the OP's question, one "study" has been going on for about 600 years now - the printed book. These have evolved over the centuries, with readbility forem...
How to check if AlarmManager already has an alarm set?
...ar alarm (registered via AlarmManager) is already set and running. Results from google seem to indicate that there is no way to do this. Is this still correct? I need to do this check in order to advise the user before any action is taken to create a new alarm.
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How can I apply a function to every row/column of a matrix in MATLAB?
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You may want the more obscure Matlab function bsxfun. From the Matlab documentation, bsxfun "applies the element-by-element binary operation specified by the function handle fun to arrays A and B, with singleton expansion enabled."
@gnovice stated above that sum and other basic...
What's a good (free) visual merge tool for Git? (on windows) [closed]
... mouseover descriptions. Another - Beyond Compare provides buttons to move from one difference to the next. Another - Beyond Compare shows the file paths in the window title bars. Meld was certainly "Good enough", but I'd rather pay for Beyond Compare. (And I have no affiliation with Beyond Compare)...
Why do most C developers use define instead of const? [duplicate]
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+1 for correct answer among a sea of wrong ones from C++ coders who don't know C.
– R.. GitHub STOP HELPING ICE
Oct 26 '10 at 13:59
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How does lucene index documents?
... system himself. Note that by using Skip-Lists, the index can be traversed from one hit to another, making things like set and, particularly, range queries possible (much like B-Trees). And the Wikipedia entry on indexing Skip-Lists also explains why Lucene's Skip-List implementation is called a mul...
How do I convert datetime to ISO 8601 in PHP
How do I convert my time from 2010-12-30 23:21:46 to ISO 8601 date format? (-_-;)
6 Answers
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How can I brew link a specific version?
...sql 0
Update (15.10.2014):
The brew versions command has been removed from brew, but, if you do wish to use this command first run brew tap homebrew/boneyard.
The recommended way to install an old version is to install from the homebrew/versions repo as follows:
$ brew tap homebrew/versions
$...
What is the best way to implement “remember me” for a website? [closed]
...dentifier and a token. The series and token are unguessable random numbers from a suitably large space. Both are stored together in a database table, the token is hashed (sha256 is fine).
When a non-logged-in user visits the site and presents a login cookie, the series identifier is looked up in the...
Explain “claims-based authentication” to a 5-year-old
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@Marnix has a pretty good answer, but to step away from the technical aspect of it:
Claims Based Authentication is about defining who you trust to give you accurate information about identity, and only ever using that information provided. My (the) go-to example is at a bar...