Databases
StackOverflow2013
Postsdbo
POWhat is your preferred style for naming variables in R?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWhat is your preferred style for naming variables in R?
    primarykey
    data
    text
    <p>Which conventions for naming variables and functions do you favor in R code? </p> <p>As far as I can tell, there are several different conventions, all of which coexist in cacophonous harmony:</p> <p><strong>1. Use of period separator, e.g.</strong> </p> <pre><code> stock.prices &lt;- c(12.01, 10.12) col.names &lt;- c('symbol','price') </code></pre> <p><em>Pros:</em> Has historical precedence in the R community, prevalent throughout the R core, and recommended by <a href="https://google.github.io/styleguide/Rguide.xml" rel="noreferrer">Google's R Style Guide</a>.</p> <p><em>Cons:</em> Rife with object-oriented connotations, and confusing to R newbies</p> <p><strong>2. Use of underscores</strong> </p> <pre><code> stock_prices &lt;- c(12.01, 10.12) col_names &lt;- c('symbol','price') </code></pre> <p><em>Pros:</em> A common convention in many programming langs; favored by <a href="http://had.co.nz/stat405/resources/r-style-guide.html" rel="noreferrer">Hadley Wickham's Style Guide</a>, and used in ggplot2 and plyr packages. </p> <p><em>Cons:</em> Not historically used by R programmers; is annoyingly mapped to '&lt;-' operator in Emacs-Speaks-Statistics (alterable with 'ess-toggle-underscore').</p> <p><strong>3. Use of mixed capitalization (camelCase)</strong></p> <pre><code> stockPrices &lt;- c(12.01, 10.12) colNames &lt;- c('symbol','price') </code></pre> <p><em>Pros:</em> Appears to have wide adoption in several language communities.</p> <p><em>Cons:</em> Has recent precedent, but not historically used (in either R base or its documentation).</p> <p>Finally, as if it weren't confusing enough, I ought to point out that the Google Style Guide argues for dot notation for variables, but mixed capitalization for functions.</p> <p>The lack of consistent style across R packages is problematic on several levels. From a developer standpoint, it makes maintaining and extending other's code difficult (esp. where its style is inconsistent with your own). From a R user standpoint, the inconsistent syntax steepens R's learning curve, by multiplying the ways a concept might be expressed (e.g. is that date casting function asDate(), as.date(), or as_date()? No, it's as.Date()).</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMartijn Pieters
    1. USmedriscoll
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POWhat is your preferred style for naming variables in R?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POWhat is your preferred style for naming variables in R?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POWhat is your preferred style for naming variables in R?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThere are also instances of MATLAB style `alllowercase` variable names, and plenty of straight-from-the-equation very short names (`x`, `y`, etc.).
      singulars
      1. POWhat is your preferred style for naming variables in R?
      1. USRichie Cotton
    2. COunderscores are like python, so i tend to use underscores. ESS should be fixed, that's really silly.
      singulars
      1. POWhat is your preferred style for naming variables in R?
      1. USBrendan OConnor
    3. COThere is nothing to fix, it has a toggle for that. But the _default behaviour_ is to interpret an underscore as a shortcut for <- saving you a key to press. So if you publish variables with underscores (Hi, Hadley) you force every ESS user to press _ twice to get the original bahaviour -- or to have customised their ESS setup. I still prefer camelCase by a new nautical miles.
      singulars
      1. POWhat is your preferred style for naming variables in R?
      1. USDirk Eddelbuettel
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload