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long form version of a function
f#

Hi,

In Beginning F#, there is an example of a shorthand for pattern matching:

let rec concatString =

function head::tail -> head plus concatString tail

| [] -> ""

Can this be written in the long hand version?

That is,

let x =

match x with ...

The reason I ask is, it is hard to understand the syntax for the shorthand version when the is no long-hand version of the same example to compare it with.

.

Any shorthand version can be converted like so:

let myFunc = function

...

let myFunc a = match a with

...

The difference between the two is function returns a function that takes an argument to match against and returns the result, and match just gives the result.

By on 3/6/2010 9:26 PM ()

(See also [link:stackoverflow.com] )

By on 3/6/2010 10:23 PM ()

Thank you very much brianmcn. That post explained it really well.

The long version of the fucntion is:

1
2
3
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7

let rec concatStringList stringList =

    match stringList with

    | head::tail -> head + concatStringList tail

    | [] -> ""

PS how do you format code in these posts? I've seen it in other posts, and I cannot even get the indenting happening.

By on 3/8/2010 4:46 AM ()

how do you format code in these posts? I've seen it in other posts, and I cannot even get the indenting happening.

See

[link:cs.hubfs.net]

By on 3/8/2010 8:33 AM ()

OK. I've got the coloring happening.

But still no indentation. Any ideas? I used notepad in combination with the F# toolbar button.

By on 3/8/2010 3:56 PM ()

I'm sorry BFalkner, but I cannot understand what you are saying. I tend to understand things better when I have an example.

I've provided a funtion in some kind of shorthand notation. How can that be written in it's corresponding long-hand version?

By on 3/6/2010 9:47 PM ()

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