World: r3wp
[Core] Discuss core issues
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Micha 30-Apr-2005 [987] | to improve someone this promissory note maybe ? |
Tomc 30-Apr-2005 [988x2] | insert port |
without tail | |
Sunanda 2-May-2005 [990] | Anyone got a better way of resetting all the values in block to a single initial value? Just curious, as the change/dup looks awkward --which usually suggests I've missed something: blk: [ 1 2 3 4 5 6 7 8 9] change/dup blk 0 length? blk |
Ashley 2-May-2005 [991] | replace/all blk integer! 0 |
Sunanda 2-May-2005 [992x2] | Thanks! That works only if they _are_ all integers.....But that's easily fixed: replace/all blk any-type! 0 |
On a related theme......Is there an easy/built-in way to check if all values in a series are equal? I'm using all-equal?: func [ser [series!]] [ser = join next ser first ser] As in: all-equal? [1 1 1 ] == true all-equal? "yyy" true all-equal? %xxx true | |
Gabriele 2-May-2005 [994x3] | replace is mezzanine, so change/dup is going to be faster; also, replace is going to be much slower than the simple loop you could use to do what replace is doing in this specific case. |
i.e. forall blk [blk/1: 0] | |
(compare that to the source of replace) | |
Volker 2-May-2005 [997] | would prefer change/dup too. both lines look equaly ugly :) all-equal?: 1 = length? unique blk |
Anton 3-May-2005 [998] | Sunanda you could use: 1 = length? unique blk |
Sunanda 3-May-2005 [999] | Thanks guys! |
Micha 4-May-2005 [1000x2] | whois: func [ host /local port ][ port: make port! join tcp:// [192.149.252.44 ":43" ] port/awake: func [ port /local ][data: copy port either data [ show data ] [ close port remove find system/ports/wait-list port ] halt] insert tail system/ports/wait-list port open/no-wait port insert port join "+" [ host "^/"] ] show: func [ d /local alpha ][ alpha: charset [#"A" - #"Z" #"a" - #"z"] d: find/tail d "City:" a: copy d a: find/tail a alpha a: copy/part a find a "^/" print [ "City: " a ] b: find/tail d "StateProv:" d: copy b b: find/tail b alpha b: copy/part b find b "^/" print [ "StateProv: " b ] c: find/tail d "Country:" c: find/tail c alpha c: copy/part c find c "^/" print [ "Country: " c ] ] whois 24.3.46.214 |
how to use function parse , in order to to get the "city" , "stateProw" of ,"country" , ?? | |
Brock 4-May-2005 [1002x9] | ;Micha, this should do the trick, you will be returned three variables, city, stateprov, and country get-stateprov: [thru "Stateprov: " copy stateprov to "^/" to end] get-country: [thru "country: " copy country to "^/" to end] get-city: [thru "City: " copy city to "^/" to end] parse test [get-stateprov] parse test [get-country] parse test [get-city] |
; actually this is better.... get-city: [thru "City: " copy city to "^/"] get-stateprov: [thru "Stateprov: " copy stateprov to "^/"] get-country: [thru "country: " copy country to "^/" to end] parse test [get-city get-stateprov get-country] | |
there is probably a better way to skip the variable number of spaces following the labels you are searching for, but haven't any experience with parse for this yet. With what I have provided you may be able to get the rest to work . I believe you can use 'any to skip multiple or no occurences of a parse rule | |
mention in... parse test ...you should replace test with your d word. | |
in the parse rules get-city, get-stateprov; get-country, you can remove all of the spaces in the thru strings ie, "City: " can be just "City:". Parse takes care of the spaces between the words. | |
show: func [ d /local alpha ][ get-city: [thru "City:" copy city to "^/"] get-stateprov: [thru "Stateprov:" copy stateprov to "^/"] get-country: [thru "country:" copy country to "^/" to end] parse d [get-city get-stateprov get-country] print [ "City: " a ] print [ "StateProv: " b ] print [ "Country: " c ] ] | |
If you didn't know the order of the data being provided to you then you could generalize the code even further... here are the two lines that would change.... get-country: [thru "country:" copy country to "^/"] ; remove "to end" parse d [any [get-city get-stateprov get-country] to end] ; added 'any block and "to end" | |
I WISH I WAS ABLE TO DELETE... I made a mistake <blush>, I forgot to remove your old variable names and there is a small error in the code I've posted above. | |
;here's a working show... but didn't easily come across a solution to allow for an unkown order of items to find show: func [ d /local alpha ][ get-city: [thru "City:" copy city to "^/"] get-stateprov: [thru "Stateprov:" copy stateprov to "^/"] get-country: [thru "country:" copy country to "^/"] parse d [get-city get-stateprov get-country to end] print [ "City:" tab trim city newline "Stateprov:" tab trim stateprov newline "Country:" tab trim country newline ] ] | |
MikeL 5-May-2005 [1011] | Brock, A good example to look at for parsing is the make-doc script. Carl has updated with makedoc2.r available at this address http://www.rebol.org/cgi-bin/cgiwrap/rebol/view-script.r?script=makedoc2.r but it is doing what your are asking about for the make doc source script which can have tags starting with === or --- followed by some text and a newline. The key is "rules: [some commands]" Have a look at it. |
Brock 6-May-2005 [1012] | Will do. |
Gordon 6-May-2005 [1013x2] | Hello; I'm wondering if there is a more efficeint way to assign values directly to a block of variables. My example involves reading lines from a file and assigning them one at a time to each variable. Here is the line format: LineFormat: [DateStr Manufacturer MF_Part TD_Part Desc Price1 Price2 Retail Stock Misc] Data: read/lines Filename Str: first Data Then I go though the String 'Str' and do the assigns DateStr: First Str Manufacturer: Second Str MF_Part: Third Str TD_Part: Fourth Str Desc: Fifth str Price1: skip Str 5 Price2: skip Str 6 Retail: skip Str 7 QOH: skip Str 8 Misc: skip Str 9 Am I missing something obvious about assigning one block of values to another block of variables? |
Oops forgot a step; should be: Data: read/lines Filename DataStr: first data Str: parse/all DataStr none (the parse splits the lines of data into a block of values) | |
DideC 6-May-2005 [1015x3] | SET is your friend ! set [SatStr Manufacturer MF_part TD_Part Desc ...] Str |
ie: | |
a: [24 "Hello" 1.2.3] set [b c d] a print [d c b] | |
Gordon 6-May-2005 [1018x2] | I'll give it a try. Thanks - BRB |
Beauty! Thanks DideC | |
DideC 6-May-2005 [1020] | no problem |
Micha 7-May-2005 [1021x4] | REBOL [Title: "proxy multiple" ] print "start-multiple" list: [] proxy: make object! [ host: 24.186.191.254 port-id: 29992 ] ph: func [port][ switch port/locals/events [ connect [insert tail list port ping: to-integer (now/time - port/date ) * 1000 port/date: now/time print [ "open ping: " ping ] ] close [ remove find list port init ping: (now/time - port/date ) * 1000 print ["close ping: " ping ] close port ] ] false ] stop: func [] [ clear system/ports/wait-list forall list [close first list ]] init: func [ /local port ][ port: make port! [ scheme: 'atcp host: proxy/host port-id: proxy/port-id awake: :ph date: now/time ] open/no-wait/binary port insert tail system/ports/wait-list port ] set: func [ h p ] [ proxy/host: h proxy/port-id: p ] send: func [ port ][ port/date: now/time insert port join #{0401} [debase/base skip to-hex 80 4 16 to-binary 193.238.73.117 #{00}] ] |
plis help ? | |
init error ! | |
>> init ** User Error: No network server for atcp is specified ** Near: port: make port! [scheme: 'atcp host: proxy/host port-id: proxy/port-id awake: :ph date: now/time] open/no-wait/binary >> | |
Sunanda 7-May-2005 [1025] | Any easy way of doing this? (I got a loop, but it feels there ought to be a more elegant way) a: "123123123" b: "12312345678" print skip-common a b "45678" ;; string after common part of both strings |
Gordon 7-May-2005 [1026] | Hello; How do you convert a letter (ASCII) to it's hex equivalent? I've tried to-hex but it wants an integer!? You would think it would be easier than: print to-integer to-string to-hex to-integer to-decimal to-char "a" which works but there has got to be an easier way. |
Tomc 7-May-2005 [1027] | >> to-hex to integer! #"A" == #00000041 |
Sunanda 7-May-2005 [1028] | Gordon, your method only works for chars than happen to map to decimals. Try this for an error: print to-integer to-string to-hex to-integer to-decimal to-char "M" Variant on Tom's to produce the same result as yours (may not work with 64-bit REBOL) form skip to-hex to-integer first "a" 6 |
Gordon 7-May-2005 [1029] | Thanks Tomc and Sunanda |
Tomc 7-May-2005 [1030x2] | >> copy/part tail to-hex to integer! to char! "Z" -2 == #5A |
unfortinatly for me we dont have a 64 bit rebol | |
Gordon 7-May-2005 [1032] | Does anyone? |
Tomc 7-May-2005 [1033x2] | or unicode |
not that I know of | |
Gordon 7-May-2005 [1035] | Thanks again for your help |
Sunanda 7-May-2005 [1036] | Quick work there Gordon: http://www.rebol.org/cgi-bin/cgiwrap/rebol/view-script.r?script=char-to-hex.r Thanks for the name check :-) |
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