File modules/editor/codemirror/mode/r/index.html

Last commit: Sun Dec 17 01:14:09 2017 +0100	Jan Dankert	Integration eines weiteren Code-Editors: Codemirror. Demnächst müssen wir hier mal aufräumen und andere Editoren rauswerfen.


     1 <!doctype html>
     2 
     3 <title>CodeMirror: R mode</title>
     4 <meta charset="utf-8"/>
     5 <link rel=stylesheet href="../../doc/docs.css">
     6 
     7 <link rel="stylesheet" href="../../lib/codemirror.css">
     8 <script src="../../lib/codemirror.js"></script>
     9 <script src="r.js"></script>
    10 <style>
    11       .CodeMirror { border-top: 1px solid silver; border-bottom: 1px solid silver; }
    12       .cm-s-default span.cm-semi { color: blue; font-weight: bold; }
    13       .cm-s-default span.cm-dollar { color: orange; font-weight: bold; }
    14       .cm-s-default span.cm-arrow { color: brown; }
    15       .cm-s-default span.cm-arg-is { color: brown; }
    16     </style>
    17 <div id=nav>
    18   <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
    19 
    20   <ul>
    21     <li><a href="../../index.html">Home</a>
    22     <li><a href="../../doc/manual.html">Manual</a>
    23     <li><a href="https://github.com/codemirror/codemirror">Code</a>
    24   </ul>
    25   <ul>
    26     <li><a href="../index.html">Language modes</a>
    27     <li><a class=active href="#">R</a>
    28   </ul>
    29 </div>
    30 
    31 <article>
    32 <h2>R mode</h2>
    33 <form><textarea id="code" name="code">
    34 X <- list(height = 5.4, weight = 54)
    35 cat("Printing objects: "); print(X)
    36 print("Accessing individual elements:")
    37 cat(sprintf("Your height is %s and your weight is %s\n", X$height, X$weight))
    38 
    39 # Functions:
    40 square <- function(x) {
    41   return(x * x)
    42 }
    43 cat(sprintf("The square of 3 is %s\n", square(3)))
    44 
    45 # In R, the last expression in a function is, by default, what is
    46 # returned. The idiomatic way to write the function is:
    47 square <- function(x) {
    48   x * x
    49 }
    50 # or, for functions with short content:
    51 square <- function(x) x * x
    52 
    53 # Function arguments with default values:
    54 cube <- function(x = 5) x * x * x
    55 cat(sprintf("Calling cube with 2 : %s\n", cube(2))  # will give 2^3
    56 cat(sprintf("Calling cube        : %s\n", cube())   # will default to 5^3.
    57 
    58 powers <- function(x) list(x2 = x*x, x3 = x*x*x, x4 = x*x*x*x)
    59 
    60 cat("Powers of 3: "); print(powers(3))
    61 
    62 # Data frames
    63 df <- data.frame(letters = letters[1:5], '#letter' = 1:5)
    64 print(df$letters)
    65 print(df$`#letter`)
    66 
    67 # Operators:
    68 m1 <- matrix(1:6, 2, 3)
    69 m2 <- m1 %*% t(m1)
    70 cat("Matrix product: "); print(m2)
    71 
    72 # Assignments:
    73 a <- 1
    74 b <<- 2
    75 c = 3
    76 4 -> d
    77 5 ->> e
    78 </textarea></form>
    79     <script>
    80       var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
    81     </script>
    82 
    83     <p><strong>MIME types defined:</strong> <code>text/x-rsrc</code>.</p>
    84 
    85     <p>Development of the CodeMirror R mode was kindly sponsored
    86     by <a href="https://twitter.com/ubalo">Ubalo</a>.</p>
    87 
    88   </article>



Download modules/editor/codemirror/mode/r/index.html


History
Sun, 17 Dec 2017 01:14:09 +0100	Jan Dankert	Integration eines weiteren Code-Editors: Codemirror. Demnächst müssen wir hier mal aufräumen und andere Editoren rauswerfen.