stdlib.core

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Function get

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option

(

)

get (

int

list

(

)

Get the nth element of a list.Performance note: if you are looping through a list, you should rather use the looping functions,
which are much faster than calling get(0,l), get(1,l), ... get(n,l).

The index of an element of the list. The first element of the list is numbered 0.

returns

{none} if the list contains less than n+1 elements or if n < 0. Otherwise {some = x}, where xis the nth element of the list.

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Markdown Syntax Help

You can enter a message using a Markdown-like syntax. Here is a list of all elements recognized.

Paragraph

A group of text isolated by two or more linebreaks will be put in a HTML paragraph <p>.

Titles

You can enter titles using various syntax:

First level title
=================

will create:

First level title

and

Second level title
------------------

will create:

Second level title

You can also create titles by preceding text with as many # as the level of the title, so

#### Title 4

will create:

Title 4

Emphasis

You may want to put emphasis on some words in your texts.

You can do a simple emphasis by surrounding some text with * or _: *text* will give in result *text*.

To put a strong emphasis on something, you can surround it with ** or __: __text__ will give in result text.

You can put *a **strong emphasis** inside a simple one* or __a _simple emphasis_ inside a strong one__.

Lists

You can insert simple bullet lists simply by putting each element in a line starting by a -, a + or a *. Mixing symbols will not create different lists unless there is a blank line in the middle:

- one
- two

* three
+ four

will result in:

three
four

If you want to put a linebreak in your source to avoid very long lines, you can put four spaces or a tabulation at the beginning of your line to keep the content as one list element:

-   one
    two
-   three
    four

will result in:

one two
three four

To insert numbered lists, you can follow the same rules and start your lines with a number followed by a period. The numbers do not have to follow a logical suit to be recognized:

1.  one
    two
3.  three
42. four
444. five

will result in:

one two
three
four
five

Links

You can insert links inside your text in two ways:

some text [Inline-style](https://mlstate.com "MLstate") more text
or
some text [Reference-style][mlstate] some random text
[mlstate]: https://mlstate.com  "MLstate"

In both cases, the title ("MLstate") is optional. The result of the above is:

some text Inline-style more text or some text Reference-style some random text

Note that references are case-sensitive and can be used for several links.

Images

Image insertion uses the same syntax than inserting links preceded by a !:

![HTML5](http://www.w3.org/html/logo/badge/html5-badge-h-solo.png "HTML5")
![HTML5][html5]
[html5]: http://www.w3.org/html/logo/badge/html5-badge-h-solo.png "HTML5"

both result in:

You can use the same reference for a link and an image (referencing the same URL).

Code

There are two ways of inserting code inside your text.

Firstly, you can surround it with `, so `some code` will result in some code.

You can also indent a paragraph with at least four spaces or a tabulation:

    rec fact(x) =
      if x < 1 then 1
      else x * fact(x-1)

will result in:

rec fact(x) =
  if x < 1 then 1
  else x * fact(x-1)

Quote

You can insert a quote in you texts by preceding it with >. You can put a quote inside a quote:

> > An indented quote
> A standard quote

will result in:

An indented quote

A standard quote

Other

You can insert an html line break (<br/>) by putting two spaces at the end of the line. You can insert a horizontal line by writing a line containing only the character - preceded by an empty line (otherwise it would result in a second-level header).

--------------
Some text
with a linebreak

will result in:

Some text with a linebreak

You can enter a message using a Markdown-like syntax.
Here is a list of all elements recognized.

## Paragraph

A group of text isolated by two or more linebreaks will be put
in a HTML paragraph <p>.

## Titles

You can enter titles using various syntax:

    First level title
    =================

will create:

First level title
=================

and

    Second level title
    ------------------

will create:

Second level title
-----------------

You can also create titles by preceding text with as many `#` as the
level of the title, so

    #### Title 4

will create:

#### Title 4

## Emphasis

You may want to put emphasis on some words in your texts.

You can do a *simple emphasis* by surrounding some text with
`*` or `_`: `*text*` will give in result *text*.

To put a **strong emphasis** on something, you can surround it with
`**` or `__`: `__text__` will give in result __text__.

You can put *a **strong emphasis** inside a simple one* or
__a _simple emphasis_ inside a strong one__.

## Lists

You can insert simple bullet lists simply by putting each element in
a line starting by a `-`, a `+` or a `*`. Mixing symbols will not create
different lists unless there is a blank line in the middle:

    - one
    - two

    * three
    + four

will result in:

- one
- two

* three
+ four

If you want to put a linebreak in your source to avoid very long lines, you
can put four spaces or a tabulation at the beginning of your line to keep the
content as one list element:

    -   one
        two
    -   three
        four

will result in:

-   one
    two
-   three
    four

To insert numbered lists, you can follow the same rules and start your lines
with a number followed by a period. The numbers do not have to follow a logical
suit to be recognized:

    1.  one
        two
    3.  three
    42. four
    444. five

will result in:

1.  one
    two
3.  three
42. four
444. five


## Links

You can insert links inside your text in two ways:

    some text [Inline-style](https://mlstate.com "MLstate") more text
    or
    some text [Reference-style][mlstate] some random text
    [mlstate]: https://mlstate.com  "MLstate"

In both cases, the title `("MLstate")` is optional. The result of the above is:

some text [Inline-style](https://mlstate.com "MLstate") more text
or
some text [Reference-style][mlstate] some random text
[mlstate]: https://mlstate.com  "MLstate"

Note that references are case-sensitive and can be used for several links.

## Images

Image insertion uses the same syntax than inserting links preceded by a `!`:

    ![HTML5](http://www.w3.org/html/logo/badge/html5-badge-h-solo.png "HTML5")
    ![HTML5][html5]
    [html5]: http://www.w3.org/html/logo/badge/html5-badge-h-solo.png "HTML5"

both result in:

![HTML5](http://www.w3.org/html/logo/badge/html5-badge-h-solo.png "HTML5")
![HTML5][html5]
[html5]: http://www.w3.org/html/logo/badge/html5-badge-h-solo.png "HTML5"

You can use the same reference for a link and an image (referencing the same URL).

## Code

There are two ways of inserting code inside your text.

Firstly, you can surround it with `\``, so `\`some code\`` will
result in `some code`.

You can also indent a paragraph with at least four spaces or a tabulation:

        rec fact(x) =
          if x < 1 then 1
          else x * fact(x-1)

will result in:

    rec fact(x) =
      if x < 1 then 1
      else x * fact(x-1)

## Quote

You can insert a quote in you texts by preceding it with `>`. You
can put a quote inside a quote:

    > > An indented quote
    > A standard quote

will result in:

> > An indented quote
> A standard quote

## Other

You can insert an html line break (`<br/>`) by putting two spaces at
the end of the line.
You can insert a horizontal line by writing a line containing only
the character `-` preceded by an empty line (otherwise it would result
in a second-level header).

    --------------
    Some text
    with a linebreak


will result in:

--------------
Some text
with a linebreak

This help is written using this syntax. You can switch between the source and the result.

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