Skip to content

Instantly share code, notes, and snippets.

@Papierkorb
Created October 27, 2015 23:23
Show Gist options
  • Save Papierkorb/ec80fefe1d69c6918892 to your computer and use it in GitHub Desktop.
Save Papierkorb/ec80fefe1d69c6918892 to your computer and use it in GitHub Desktop.
require 'benchmark'
require 'execjs' # Using therubyrunner gem!
require 'redcarpet'
require 'kramdown'
#
test_data = File.read "big.md"
marked = ExecJS.compile File.read "marked.js" # https://github.com/chjj/marked/blob/master/lib/marked.js
redcarpet = Redcarpet::Markdown.new Redcarpet::Render::HTML.new
#
n = 10_000
Benchmark.bm(7) do |x|
x.report("RedCarpet"){ n.times{ redcarpet.render test_data } }
x.report("kramdown"){ n.times{ Kramdown::Document.new(test_data).to_html } }
x.report("marked.js"){ n.times{ marked.call 'marked', test_data } }
end

An h1 header

Paragraphs are separated by a blank line.

2nd paragraph. Italic, bold, and monospace. Itemized lists look like:

  • this one
  • that one
  • the other one

Note that --- not considering the asterisk --- the actual text content starts at 4-columns in.

Block quotes are written like so.

They can span multiple paragraphs, if you like.

Use 3 dashes for an em-dash. Use 2 dashes for ranges (ex., "it's all in chapters 12--14"). Three dots ... will be converted to an ellipsis. Unicode is supported. ☺

An h2 header

Here's a numbered list:

  1. first item
  2. second item
  3. third item

Note again how the actual text starts at 4 columns in (4 characters from the left side). Here's a code sample:

# Let me re-iterate ...
for i in 1 .. 10 { do-something(i) }

As you probably guessed, indented 4 spaces. By the way, instead of indenting the block, you can use delimited blocks, if you like:

define foobar() {
    print "Welcome to flavor country!";
}

(which makes copying & pasting easier). You can optionally mark the delimited block for Pandoc to syntax highlight it:

import time
# Quick, count to ten!
for i in range(10):
    # (but not *too* quick)
    time.sleep(0.5)
    print i

An h3 header

Now a nested list:

  1. First, get these ingredients:

    • carrots
    • celery
    • lentils
  2. Boil some water.

  3. Dump everything in the pot and follow this algorithm:

    find wooden spoon
    uncover pot
    stir
    cover pot
    balance wooden spoon precariously on pot handle
    wait 10 minutes
    goto first step (or shut off burner when done)
    

    Do not bump wooden spoon or it will fall.

Notice again how text always lines up on 4-space indents (including that last line which continues item 3 above).

Here's a link to a website, to a local doc, and to a section heading in the current doc. Here's a footnote 1.

Tables can look like this:

size material color


9 leather brown 10 hemp canvas natural 11 glass transparent

Table: Shoes, their sizes, and what they're made of

(The above is the caption for the table.) Pandoc also supports multi-line tables:


keyword text


red Sunsets, apples, and other red or reddish things.

green Leaves, grass, frogs and other things it's not easy being.


A horizontal rule follows.


Here's a definition list:

apples : Good for making applesauce. oranges : Citrus! tomatoes : There's no "e" in tomatoe.

Again, text is indented 4 spaces. (Put a blank line between each term/definition pair to spread things out more.)

Here's a "line block":

| Line one | Line too | Line tree

and images can be specified like so:

example image

Inline math equations go in like so: $\omega = d\phi / dt$. Display math should get its own line and be put in in double-dollarsigns:

$$I = \int \rho R^{2} dV$$

And note that you can backslash-escape any punctuation characters which you wish to be displayed literally, ex.: `foo`, *bar*, etc.

Footnotes

  1. Footnote text goes here.

$ ruby --version
ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux]
$ ruby benchmark.rb
user system total real
RedCarpet 0.220000 0.000000 0.220000 ( 0.227063)
kramdown 52.250000 0.000000 52.250000 ( 52.328927)
marked.js 3.660000 0.020000 3.680000 ( 3.632203)
# Machine:
# Intel Core i5 6600K (Skylake) 4x3.5GHz
# 16 GiB DDR-4 RAM @ 2666MHz
@Papierkorb
Copy link
Author

Correction: Used therubyracer gem

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment