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Should I use a data.frame or a matrix?
..., which handles factors appropriately by converting them to numeric values based on the internal levels. Coercing via as.matrix() will result in a character matrix if any of the factor labels is non-numeric. Compare:
> head(as.matrix(data.frame(a = factor(letters), B = factor(LETTERS))))
a ...
Why can't yield return appear inside a try block with a catch?
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My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
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When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
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Updating packages in Emacs
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
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How to add a local repo and treat it as a remote repo
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Covariance, Invariance and Contravariance explained in plain English?
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Java 8: performance of Streams vs Collections
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Creating a daemon in Linux
...r state-less protocols (such as syslog, DNS), a daemon implementing socket-based activation can be restarted without losing a single request. See below for details.
If applicable, a daemon should notify the init system about startup completion or status updates via the sd_notify(3) interface.
In...