World: r3wp

does it build a series without corrupting binary data ??

perhaps i need 'bjoin :)

Yes. The mezzanine is faster than the native version, but the native 
doesn't have the intermediate block overhead.

Where is it?

'funco i.e.

It's just another name for FUNC (where FUNC is redefined in R2/Forward).

ask-brian: funco [ ask-brian ]

oops... missing the second block!

Just use FUNC :)

Nope... seems to give the same problems as rejoin

ajoin: func [[throw!] block [block!]][make string! reduce block]
>> ajoin [ "hello" make binary! 1 ]
== "hello#{}"

apologies .. Sunanda's workround works  viz to-string rejoin [ #{} 
.... ]

Wow, that make string! change to join/rejoin yields about a 300% 
speed increase! Definiately one to backport to R2.

doesn't help with 'ajoin though ... need to coerce to binary first

Graham -- glad the workaround  works.
But it is R2 only. R3 has other problems.

not too fast .. it exhibits different behaviours

Just needs a bit of datatype coercing added.

this has always got me
 rejoin [ <text> "hello" </text> ]
== <texthello</text>>

rejoin [ "" <text> "hello" </text> ]
== "<text>hello</text>"

which is I guess one should use 'reform when constructing strings 
for web output.

this fix allows me to upload a binary document using the googleapi 
.. eg. docx

First cut QAD on join/rejoin, still about twice as fast the originals:

	join: make function! [
		"Concatenates values."
		value "Base value"
		rest "Value or block of values"
	][
		either series? value [
			make type? value reduce [value rest]
		][
			make string! reduce [value rest]
		]
	]


	rejoin: make function! [
		"Reduces and joins a block of values."
		block [block!] "Values to reduce and join"
	][
		either empty? block: reduce block [block] [

   make either series? first block [type? first block] [string!] block
		]

	]

try rejoin with using #{} as the first element!

Ashley, that JOIN doesn't work for block types. It should be:
>> join [a b] [1 2]
== [a b 1 2]
Yours returns  [[a b] [1 2]]]

Anyone can tell me why my googledocs object won't clone?

http://rebol.wik.is/Googledocs

gdoc: make object! googledocs []
** Script Error: Invalid argument: object
** Near: gdoc: make object! googledocs []

crap

still asleep ...

ignore

Has anyone done any work with OAUTH ie. open authentication?

REPEAT is a native. Can it be made as a mezzanine using WHILE? It 
takes 3 arguments:
'word value body


The first is seen as a lit-word by the function. This should be bound 
to body and only be used as a local variable in the function context. 
My first attemp to make a REPEAT mezzanine didn't go well:

my-repeat: func [
	'word value body
][
	bind/copy body word
	word: 0
	while [(word: word + 1) <= value] body
]

>> my-repeat i 10 [print i]
** Script Error: i has no value

Suggestions?

One problem is, that WORD become an integer, when I set it to zero. 
If I write:
set word 0

instead, I create a global variable. I'm wondering, if this can be 
done at all!?

my-repeat: func ['w v b][use reduce [w] compose/deep [(to-set-word 
w) 0 while [v >= (to-set-word w) (w) + 1][(b)]]]

(sorry for abbreviations, using small keyboard)

Nice Chris! I expected, it could be done somehow. Do you know, if 
REPEAT was a mezzanine in some of the first versions of REBOL?

Can it be made without COMPOSE?

This version without COMPOSE seems to work:

my-repeat: func [
	'word value body
][
	use reduce [word] reduce [
		to set-word! word 0

  'while reduce ['value to word! ">=" to set-word! word word '+ 1]
			body
	]
]


I'm not quite sure, why it works without using BIND to connect body 
with word?

...why it works without using BIND to connect body with word?
 - of course it binds the body, USE takes care of that

It does? That's not clear from this example:


>> f: func ['w b] [use reduce [w] reduce [to set-word! w 1 'do 'b]]
>> f i [print i]
** Script Error: i has no value

Changing 'b to b and it works:


>> f: func ['w b] [use reduce [w] reduce [to set-word! w 1 'do b]]
>> f i [print i]
1

(Still a bit confused.)

Is it possible to give a function with a refinement as an argument 
to another function? If I e.g. would make a MAP function in REBOL, 
it could be:


>> map: func [:function list /local result][result: clear [] foreach 
value list [append result function value]
>> map sine [0 15 100]
== [0.0 0.258819045102521 0.984807753012208]


MAP apply the function to each member of the list. But I can't give 
sine/radians to map:

>> map sine/radians [0 15 100]
== 100

Is there a way around this?

You could use the MAP syntax that R3 uses (soon to be renamed MAP-EACH)

 map x [0 15 100] [sine/radians x]
== [0.0 0.650287840157117 -0.506365641109759]

It seems to work, if I put DO before function:


map: func [:function list /local result][result: clear [] foreach 
value list [append result do function value]]

It's because, sine/radians is seen as a path! datatype, when the 
argument is defined as :function

G: re. confused - try stepping through the function in the order 
it is interpreted.  Should be clear by the time 'use evaluates the 
two blocks...

Anything more efficient than this?



findall: func [s items [block!] /local result][result: copy [] foreach 
i items [repend result [find s i]]]

I want to make sure each item in the block of items occurs in the 
series S

reformatted 

findall: func [s items [block!] 
	/local result
][
	result: copy [] 
	foreach i items [repend result [find s i]]
	all result
]

if the first item is not found, it still searches all the rest which 
is no good

is this something that one can use 'map for?

Using INTERSECT leads to a shorter function, but I'm not sure, it's 
the fastest way:

findall: func [s items [block!]] [items = intersect s items]