purplecat

You're viewing

purplecat's journal
Create a Dreamwidth Account Learn More

Reload page in style: site light

I'm in a horrendous muddle about stacks. Java lets you do all sorts of cunning and unforgivable things with stacks (like take things off the bottom of them, or shove things onto the bottom of them). As a result my program appears to be full of stacks and stacks of stacks none of which have tops or bottoms where I think they are.

Then I try to print them out to see what they look like and I'm not even printing them in the right order so I'm still confused about what is at the top of the stack and what is at the bottom of the stack.

SENSIBLE languages don't let you do anything bad with stacks as a result of which you never have to worry about which is the bottom and which is the top. This whole stack confusion thing is coming as something of a shock.

Flat | Top-Level Comments Only

From:

scimon.livejournal.com

Thing is if you can add to it in arbitrary places it's an array not a stack. They have their uses too.

Personally I'm interested in playing about with erlang, it looks fun.

From:

purplecat

They appear to be subclassing arrays and so inherit lots of functions that don't behave as expected...

Flat | Top-Level Comments Only

Profile

purplecat

February 2026

S	M	T	W	T	F	S
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28

Tags

100 papers [10]
absent friends [2]
academia [94]
- dead scientists [2]
- edinburgh informatics [3]
- groups
  - dream [2]
- impact [1]
- public understanding [28]
  - lego rover [21]
- publications [57]
- scientists
  - aaron sloman [1]
  - alan bundy [4]
  - douglas hofstadter [1]
  - john mccarthy [2]
- talks [22]
- teaching [1]
administrivia [1]
agents of shield [1]
ai [28]
- agents [24]
  - ail [9]
  - bdi [11]
    - goals [2]
  - groups [3]
  - languages
    - agentspeak [1]
    - oopl [1]
  - organisations [3]
- automated reasoning [7]
  - rippling [1]
  - sat [1]
  - smt [1]
- ethics [7]
- explainability [2]
- hybrid systems [1]
- knowledge representation [1]
- lego robots [1]
- planning [1]
- robotics [4]
aisb [10]
amazon [1]
anecdote [1]
arthuriana [6]
bernice summerfield [6]
- review [5]
birthday [11]
books [54]
- author
  - andrew cartmel [3]
  - ben aaronovitch [4]
  - c s lewis [1]
  - charlotte bronte [1]
  - craig hinton [2]
  - david mcintee [1]
  - david whittaker [1]
  - dorothy l sayers [1]
  - iain m banks [2]
  - ian rankin [2]
  - j r r tolkien [1]
  - jacqueline rayner [2]
  - jane austen [1]
  - jeff vandermeer [1]
  - jim mortimore [1]
  - jonathan blum [2]
  - justin richards [3]
  - kate orman [2]
  - kelly hale [1]
  - lance parkin [4]
  - lawrence miles [6]
  - mags halliday [5]
  - malcolm hulke [1]
  - marc platt [2]
  - mark michalowski [3]
  - mary stewart [1]
  - megan whalen turner [3]
  - michael moorcock [2]
  - neal stephenson [3]
  - paul cornell [4]
  - paul dale smith [5]
  - paul magrs [11]
  - philip purser-hallard [10]
  - phyllis ann karr [1]
  - rob shearman [3]
  - rosemary sutcliff [2]
  - sara paretskey [1]
  - shakespeare [1]
  - simon guerrier [2]
  - terrance dicks [2]
  - terry pratchett [1]
  - tolkien [3]
castle [1]
christmas [2]
class [7]
- review [7]
computer science [15]
- complexity theory [4]
- game theory [5]
  - economics [1]
- np problems [1]
- verification [3]
  - induction [1]
conferences [3]
- aamas [1]
- arw [1]
- clima [1]
conventions [6]
- eastercon [11]
  - 2010 [2]
  - 2011 [4]
  - 2012 [1]
  - 2015 [1]
  - 2025 [1]
- lass o gowrie [1]
crochet [41]
- amigurumi [11]
- garment [5]
- moogly cal [9]
- non-euclidean [10]
current events [25]
dark [1]
- icons [1]
diary [14]
doctor who [1027]
- books [55]
  - annual [9]
  - cover [59]
    - benny adventure [1]
    - eda [6]
    - misc [9]
    - missing adventure [1]
    - new adventure [13]
    - nuwho [2]
    - pda [10]
    - target [17]
  - edas [2]
  - nas [4]
  - new series [9]
  - pdas [1]
  - storybook [1]
  - time and relative disse [5]
- comic [11]
  - fifth doctor [2]
  - first doctor [3]
  - fourth doctor [2]
  - second doctor [2]
  - sixth doctor [2]
  - third doctor [1]
- costume bracket [133]
- factsheet [1]
- fandom [2]
- fanzine [8]
  - channel d [1]
  - dwb [2]
  - skaro [1]
  - tides of time [1]
  - web planet [4]
- fiction [1]
  - martha [1]
  - thirteen [1]
  - yaz [1]
- icons [78]
  - ace [1]
  - adric [1]
  - amy [1]
  - amy+rory+river [1]
  - barbara [1]
  - barbara+ian [1]
  - ben [1]
  - bill+nardole+twelve [1]
  - chang lee [1]
  - clara [1]
  - cybermen [1]
  - dalek [1]
  - dan [1]
  - doctor+master [1]
  - dodo [1]
  - donna [1]
  - eight [1]
  - eleven [2]
  - eleven+river [1]
  - faction paradox [1]
  - fifteen [1]
  - four [1]
  - four+leela [1]
  - four+sarah [1]
  - fugitive doctor [1]
  - grace [1]
  - graham+ryan [1]
  - harry [1]
  - ian [1]
  - ice warriors [1]
  - jamie [1]
  - jamie+victoria [1]
  - jamie+zoe [1]
  - jo [1]
  - katarina [1]
  - leela [1]
  - liz [1]
  - martha [1]
  - mel [1]
  - nardole [1]
  - nine [1]
  - nyssa [1]
  - one [1]
  - osgood [1]
  - peri [1]
  - polly [1]
  - romana [1]
  - romana1 [1]
  - romana2 [1]
  - rory [1]
  - rose [1]
  - ruby [1]
  - sara [1]
  - sarah [1]
  - sarah+three [1]
  - sea devils [1]
  - seven [2]
  - shalka [1]
  - silurians [1]
  - six [1]
  - sontarans [1]
  - steven [1]
  - susan [1]
  - tegan [1]
  - tegan+turlough [1]
  - ten [1]
  - the master [3]
  - the rani [2]
  - thirteen+yaz [1]
  - three [2]
  - turlough [1]
  - two [1]
  - unit [1]
  - vicki [1]
  - victoria [1]
  - yaz [1]
  - zoe [1]
  - zygons [1]
- new series [6]
- nuwho rewatch [72]
- paper dolls [79]
- picture [233]
  - ainley master [2]
  - alien [1]
  - amy [1]
  - amy/rory [1]
  - barbara [1]
  - behind the scenes [16]
  - bill [1]
  - bonnie langford [1]
  - cast [3]
  - christopher eccleston [1]
  - clara [1]
  - convention [1]
  - daphne ashbrook [1]
  - david tennant [1]
  - delgado master [3]
  - donna [2]
  - dvd cover [5]
  - dwm [4]
    - cover [2]
  - eighth doctor [1]
  - eleventh doctor [4]
  - eleventh doctor episo [8]
  - elizabeth sladen [1]
  - exhibition [2]
  - fanart [9]
  - fifth doctor [4]
  - fifth doctor episode [7]
  - fiftheenth doctor epi [1]
  - first doctor [4]
  - first doctor episode [16]
  - fourth doctor [5]
  - fourth doctor episode [11]
  - frazer hines [2]
  - fugitive doctor [1]
  - india fisher [1]
  - jamie [4]
  - jo [3]
  - joanna lumley [1]
  - jodie whittaker [4]
  - k9 [1]
  - leela [2]
  - martha [3]
  - matt smith [1]
  - mickey [1]
  - missy [1]
  - monster [15]
  - new adventures [1]
  - nicholas courtney [2]
  - nicola bryant [1]
  - ninth doctor [1]
  - ninth doctor episode [1]
  - patrick troughton [1]
  - paul mcgann [1]
  - pearl mackie [2]
  - peri [2]
  - peter capaldi [1]
  - production team [1]
  - puzzle [1]
  - river song [1]
  - romana [3]
  - romana 1 [1]
  - romana 2 [2]
  - rose [4]
  - rowan atkinson [1]
  - russell t davies [1]
  - sara [1]
  - sarah [4]
  - second doctor [6]
  - second doctor episode [9]
  - seventh doctor episod [6]
  - shalka doctor [1]
  - sixth doctor [5]
  - sixth doctor episode [4]
  - susan [1]
  - sylvester mccoy [2]
  - tardis [3]
  - tegan [2]
  - tenth doctor [2]
  - tenth doctor episode [12]
  - the brigadier [1]
  - the master [3]
  - theatre [2]
  - third doctor [5]
  - third doctor episode [2]
  - thirteenth doctor [2]
  - thirteenth doctor epi [2]
  - tom baker [2]
  - turlough [1]
  - tv movie [1]
  - twelfth doctor episod [4]
  - unit [1]
  - vicki [1]
  - victoria [3]
  - villain [1]
  - web planet [2]
  - william hartnell [2]
  - yaz [1]
  - zoe [1]
- rec [1]
- review [433]
  - book [34]
    - non-fiction [7]
  - film [1]
  - tv [399]
    - classic [150]
    - new new series [15]
    - new series [233]
- russell davies [3]
- steven moffat [2]
- the randomizer [152]
- verity podcast [1]
- whordle [4]
dolls [78]
- lego [5]
  - nasa [3]
- paper dolls [79]
dreamwidth [3]
edinburgh [8]
- festival [1]
exercise [18]
- running [37]
  - london marathon [19]
facebook [5]
faction paradox [3]
- review [3]
family [12]
- b [23]
  - animals [1]
  - dinosaurs [16]
  - fossils [4]
  - media stardom [19]
- cousins [1]
- days out [1]
- g [4]
  - school [1]
fandom [4]
fandom friday [2]
fandom stocking [1]
fanfiction [4]
feminism [5]
films [8]
follow friday [7]
food [51]
- heston blumenthal [1]
- recipe [40]
fools and heroes [11]
fossil friday [57]
friends [2]
genealogy [16]
granny's diary [5]
grimm [1]
- icons [1]
history [4]
holidays [66]
- cleveland way [5]
- cornwall [3]
- hadrian's wall [23]
- inca trail [9]
- orkney [13]
- ridgeway [3]
- scotland [2]
- snowdonia [5]
- wales [2]
- west highland way [9]
house [16]
i have no tag for this [25]
i saw this last week [110]
icons [47]
- castle [1]
- ladybird books [1]
- pikmin [1]
iris wildthyme [5]
- review [4]
jobs [3]
kin-strife [10]
linkspam [21]
livejournal [14]
lizzie bennet diaries [1]
mathematics [21]
- formal proof [1]
- logic [1]
- non-euclidean [10]
- philosophy [6]
  - proof [2]
- verification [1]
mcu [2]
- icons [1]
  - natasha [1]
media stardom [7]
meme [66]
meta [1]
model checking [4]
- systems
  - java pathfinder [3]
oxford [1]
performing [1]
- music [1]
philosophy [8]
- ai [2]
- ethics [2]
- mathematics [3]
picspam [113]
- castle [32]
- hobbit hole [6]
- house [2]
- inca ruins [2]
- prehistoric monument [100]
- roman remains [13]
- travel [64]
  - holidays [43]
  - work related [22]
pokemon go [2]
- icons [1]
primeval [59]
- fiction [1]
  - becker [1]
  - blade [1]
  - crossover [1]
  - lester [1]
  - ryan [1]
  - ryan/stephen [2]
- icons [4]
  - abby/ryan [1]
  - becker [1]
  - becker/lester [1]
  - becker/matt [1]
  - becker/ryan [1]
  - blade/lester [1]
  - claudia/lester [1]
  - connor [1]
  - connor/lester [1]
  - danny [1]
  - danny/ryan [1]
  - jess/ryan [1]
  - lester [1]
  - lester/ryan [1]
  - nick/stephen [1]
  - ryan [1]
- review [45]
programming [14]
- ail [1]
- languages
  - agentspeak [2]
  - jason [1]
  - java [5]
  - maude [2]
  - prolog [2]
projects
- eass [13]
- mcapl [13]
- platform grant [1]
- rais [2]
- verifiable autonomy [1]
- vps [2]
random doctor who picture [290]
random poetry [1]
rant [6]
reading listening watching [96]
rec [1]
- humour [1]
resolutions [14]
review [591]
- book [136]
  - non-fiction [37]
    - history [25]
      - science [9]
- comic [2]
- film [9]
- tv [409]
  - class [6]
  - internet [1]
  - merlin [2]
  - sarah jane adventures [5]
  - survivors [4]
roleplaying [24]
ros [1]
science [1]
science fiction [2]
science
- astronomy [1]
  - apod [1]
share
- twitter [2]
social networking [3]
- google+ [2]
- tumblr [1]
star wars [2]
- dolls [1]
  - lego [1]
the expanse [2]
- icons [1]
  - crew [1]
the prisoner [1]
- icons [1]
theorem proving [6]
- middle-out reasoning [3]
- proof planning [5]
  - critics [2]
  - rippling [3]
- proof specification lang [2]
- systems
  - isabelle [2]
  - isaplanner [4]
  - maude [1]
  - proof general [3]
- theory slicing [1]
- tptp thf [3]
throwback thursday [53]
- an oxford childhood [12]
- ancestors [3]
- arthurians [6]
- conventions [1]
- dad [3]
- docsoc [1]
- family [1]
- larp [3]
- oules [1]
- politics [1]
- running [1]
- wheatley [3]
tolkienery [7]
- fiction [1]
  - crossover [1]
  - sauron [1]
torchwood [5]
- review [13]
travel [73]
- commuting [2]
- work related [34]
traveller [6]
tv [29]
- blakes seven [1]
- buffy [1]
- firefly [2]
- sapphire and steel [1]
urban dead [5]
web stuff [1]
wierd spam [2]
world war z [1]
- fiction [1]
  - crossover [1]
writing [2]

Page Summary

scimon.livejournal.com - (no subject)

Active Entries

1: Suprised
2: Random Doctor Who Picture

Style Credit

Base style: Transmogrified by Yvonne
Theme: Sleeping Warrior by dancing_serpent

Expand Cut Tags

No cut tags

Top of page

Stacks

(no subject)