android – How to loop on data while inflating layouts?

Do I have to rely on ListView/Recycler view each time I need to loop over data to repeat a layout ?

I totally understand it for long lists of data where scroll/performance is involved, but let’s say I am sure i’ll only have 0…3max items and need to display in very simple single-line-layout for each (1 image, 1 textview + button).. isn’t there a simplier pattern than using adapters ?

Seems like overkill (and a pain to deal with for every little part of my screen where I need to loop overs small lists).

What are the other options while using Components architecture (databinding) ?
Manually inflating my layout ? In viewmodel ? fragment? Do I need to create another viewModel specially for this child layout ?

Thanks

plotting – Obtaining the intersections of 3-D regions using loop?

I am trying to take intersections of several three-dimensional regions by using the regionplot3d command.
Currently thinking about how to use looping to take intersections for several 3-D regions.

RegionPlot3D(
x - 2*(A/8)^(i) - p^(i)*(y + z) < 0 &&
x + (A/8)^(i) - p^(i)*(y + z) > 0, {x, -2, 2}, {y, -2, 2}, {z, -2,
2}, Mesh -> None, PlotPoints -> 100)

The region after taking $i = 4,5,6,…,20$

any idea of looping?
$A =3, p =0.5$

boot loop – Nexus 6P Bootlooping, can’t go to recovery mode, tried multiple flashes, used Nexus Root Toolkit. Is my device gone forever?

As you guys may know, the Nexus 6P has a notorious bootlooping issue. After trying multiple flashes, and even going to WugFresh’s Nexus Root Toolkit, I had no avail for any signs that my device was fixed. I can’t go to recovery mode either because it bootloops there too. My question is that is my device gone forever? Can I no longer fix it? Thanks in advance.

bucles – Problema en loop con levelplot y subplot, solo grafica la ultima figura en R

Quiero generar una imagen con 9 mapas, sin embargo cuando al pasar por el loop solo imprime la ultima figura.

La figura es un mapa de lluvia con isolineas de presión para 9 meses del año. Este es el cacho de mi código que buscar generar el grafico:

mapTheme <- rasterTheme(region = brewer.pal(9, "GnBu"))

png("mapas.png")
par(mfrow=c(3,3)
for (j in 1:9){
          plt<-levelplot(pcp_raster, margin = F, at=at.sca, pretty=TRUE, 
                           par.settings = mapTheme,
                           colorkey=TRUE,main=paste("Month",j,sep = ""))+ 
                 contourplot(slp_raster, margin = F,pretty=TRUE,colorkey=FALSE,
                             col="red",labels=list(cex=0.7),
                             cuts=6)+
                 layer(sp.lines(Mex_outline, col="black", lwd=0.5))
          print(plt)
    }
   dev.off()

De antemano muchas gracias.

lc 3 – A Better Understanding of LC-3 – Branch Loop to Stop When Encountering a Negative

Im going to start with that im trying to do.

Change this program to loop until it encounters a sentinel value, which is a negative number. The data begins at x3100. Use only one branch command. There will always be at least one positive integer in the list. No count controlled loop.

When the program ends, R2 must contain the number of values summed and R3 must contain the sum of those values.

.ORIG x3000

AND R3, R3, #0

AND R2, R2, #0

ADD R2, R2, #12

BRz #5

LDR R4, R1, #0

ADD  R3, R3, R4

ADD R1, R1, #1

ADD R2, R2, #-1

BRnzp #-6

.END

My textbook along with the professor are not being of much help so i came here to try a get a better understanding.

I know I can remove/get rid of the other two Branch Loop commands as I need only one, but I do not know how to structure that loop and getting R2 and R3 to work, it just seems they want to stay at 0.

EDIT: That was because i did not run it, i only opened it in the simulator.

I’m also not sure how i can just skip from x3000 to x3100 to fill data being provided from this loop.

postgresql – Monitor FOR loop progress in postgres

By adding raise notice. It will keep printing value of i — so that you will always have idea about loop progress.

    DO
    $do$
    BEGIN 
    FOR i IN 1..20000
    -- update some rows
    raise notice 'Current Progress Value i:%',i;
     LOOP
    END LOOP;
    END; 

Or more better way.

  1. Create a sql file : vi loop.sql — add your loop into this file with raise notice.

  2. Run as a job: psql -U username -d database_name -a -f loop.sql &>progress_log

  3. Keep monitoring latest id : tail progress_log

Note: One more tip- I think you need to initialize i – need to include a declare section.

boot loop – Please help me do data recovery from a phone stuck in bootloop

I bought a Huawei Honor 5C Pro phone 2 years back and so far it had been working well. Two nights back, the phone shut down because of empty battery and I slept without putting it on charge.

The next morning, I started to charge it but the red light started blinking continuously for some time. Then, the honor logo was repeatedly flashing on and off without it reaching the lock screen.After every two or three times of flashing honor logo, it flashes emui with reboot,factory reset and clear partition cache options but it doesn’t stop for me to choose any option.

This bootloop happens continuously while it is charging and if I remove it from charging, it still bootloops and doesn’t shutdown no matter what. It bootloops until all battery is drained and then shuts down.

Only one time did it open while charge was 10% but after that, it shut down and hasn’t stopped bootlooping.

Unfortunately, the battery is not removable.

Also, the problem is, when I put it on charge, for some time a red light blinks and then without any input from user, the phone switches on, boots to Honor logo and after every 2-3 honor logo flashes, it flashes to emui (with reboot, factory reset and clear partition cache option) but the screen immediately blacks out before I can choose any option.

The morning it happened, after many tries, it did open once at 10% charge. But it again switched off and hasn’t stopped bootlooping since.

I don’t care if the phone doesn’t work. I just need the data stored on the ROM. If the phone can work, that’s great but the data is more important.

As long as the phone keeps charging, this boot loop keeps happening despite me trying to switch off the phone. When I remove it from charging, it still boot loops until battery is low.

Please help me get back control of the phone or atleast recover the data stored on the phone’s ROM.

python – Is it okay to give for loop index variables a name other than a simple x or y?

I’m currently cleaning up a web scrapping python script using selenium to download all module content from a blackboard university site.

My review question is in regards to the naming of index variables in a for loop. Currently I have the following nested for loops:

for x in range(len(modules)):


    for y in range(modules(x)('content')):

        do.something(modules(x)('content')(y)('url'))

And I am thinking of changing the loops to something more like the following:

for module in range(len(modules)):


    for content in range(len(modules(module)('content'))):

        do.something(modules(module)('content')(content)('url'))

Is this appropriate for me to do given the purpose of the loops? I have been scolded here before about something similar so wanted to be sure.

Thanks!

algorithms – Coming up with loop invariants involving k?

void min(arr(), n){
for(i = 0;i < n; ++i)
{
   // Change < to > if you want to find the smallest element
   if(arr(i) > arr(i+1))
       arr(i) = arr(i+1);
}

To avoid wording about a “just check my work” question. I will try to explain what I do not understand about this topic of loop invaraints. I have been having the hardest time coming up with the beginning loop variant with respect to the variables and the what they mean in relation to the arrays. So, my question about this code loop invariant is that this program finds the smallest element in the array. My loop invaraiant is At the start of the iteration when i = k, the item at index k is the smallest item in the range from zero to k. Can you tell me both if I have the correct loop invariant and also am I understanding the concept correctly. I believe that I need to relate such variables such as i, and j in loops with the varaible k in relation to what the program is doing. Thank you.