paging | A small set of utilities to paginate your data in Go | Widget library

 by   ulule Go Version: v0.3.0 License: MIT

kandi X-RAY | paging Summary

kandi X-RAY | paging Summary

paging is a Go library typically used in User Interface, Widget applications. paging has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A small set of utilities to paginate your data in Go
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            kandi-support Support

              paging has a low active ecosystem.
              It has 136 star(s) with 20 fork(s). There are 9 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 0 open issues and 2 have been closed. On average issues are closed in 44 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of paging is v0.3.0

            kandi-Quality Quality

              paging has 0 bugs and 0 code smells.

            kandi-Security Security

              paging has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              paging code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              paging is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              paging releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.
              It has 854 lines of code, 51 functions and 9 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

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            paging Key Features

            No Key Features are available at this moment for paging.

            paging Examples and Code Snippets

            No Code Snippets are available at this moment for paging.

            Community Discussions

            QUESTION

            How does the Dirty and Access bits affect the TLB?
            Asked 2022-Mar-23 at 20:07

            I get it that if a page has been accessed it'll have the Access bit set, and if has been written to, the Dirty bit will also be set. But it's unclear to me how these bits affect the TLB/TLB caching? Also OSDEV has the following paragraph

            When changing the accessed or dirty bits from 1 to 0 while an entry is marked as present, it's recommended to invalidate the associated page. Otherwise, the processor may not set those bits upon subsequent read/writes due to TLB caching.

            In what cases would you change the dirty and access bits from 1 to 0?

            ...

            ANSWER

            Answered 2022-Mar-23 at 09:51

            In what cases would you change the dirty and access bits from 1 to 0?

            If the OS is running low on memory it'll want to free some pages (e.g. send the page's data to swap space so it can use the physical memory for something else). Often this will be based on "least recently used", but the CPU only has 1 "accessed" flag for each page, so to work around that the OS checks the accessed flags periodically and clears them back to zero so it knows (roughly) how long ago a page was accessed and not just if it was/wasn't accessed. It's a little like "if(page->accessFlag == 1) { page->accessFlag = 0; page->time_since_access = 0; } else { page->time_since_access++; }".

            For the dirty flag, consider a read/write memory mapped file, or a write-back disk cache. A program modifies data in memory (causing the dirty flag to be set); then when the disk drive has nothing better to do the OS might find pages with the dirty flag set, write them to disk, and clear the dirty flag/s back to zero (so the same page doesn't get written to disk again for no reason next time).

            How does the Dirty and Access bits affect the TLB?

            It's more the opposite - the TLB effects the flags (and the flags don't effect the TLB).

            When a CPU sets the dirty or accessed flags it does an atomic update of memory to guard against race conditions (e.g. other CPUs modifying or checking the same page table entry at the same time), and atomic updates are somewhat expensive. To reduce/avoid these atomic writes a CPU can (and most likely will) cache the page's accessed and dirty flags in the TLB entry so that the atomic write can be skipped if the CPU wants to set the flag/s but the TLB entry says they're already set anyway. If the TLB entry is wrong (e.g. because the OS changed the accessed or dirty flags in memory but didn't invalidate the TLB entry) then the CPU can skip atomic writes that were needed by the OS. This can cause data corruption (e.g. OS assuming that a page's contents in memory don't need to be written to disk because the dirty flag wasn't set).

            Source https://stackoverflow.com/questions/71583800

            QUESTION

            Why does Android 12 and room-paging now crash
            Asked 2022-Mar-14 at 18:36

            I've updated my android application to target Android S and was made to add

            ...

            ANSWER

            Answered 2021-Oct-20 at 13:35

            The fix was to also increase paging androidx.paging:paging-runtime-ktx to beta01

            Source https://stackoverflow.com/questions/69646809

            QUESTION

            Animating a paginator indicator into a button
            Asked 2022-Mar-08 at 21:15

            I have been developing a personal application to build a finance app. At the moment I'm creating an Onboarding screen, with is successfully working. Although I want to add some styles to it, I have created an animated paginator, but I want to make the last page indicator turn into a Touchable button.
            At the moment the paginator looks like this:

            When it reaches the last one:

            I want that last animation turn into a button.
            This is my code for Paginator:

            ...

            ANSWER

            Answered 2022-Mar-08 at 20:08

            The key points were:

            1. When we scroll from n-1th to nth page,
              1. All indicators except nth need to be adjusted. The adjustment could be either of
                1. Shrink content+margin of all other indicators to 0 width. ( preferred )
                2. Move all indicators to left by calculated amount.
              2. The nth element should grow to occupy full width. The contents should also change opacity from 0 to 1.

            With this points in mind, it should be easy to understand following changes in Paginator code.

            Source https://stackoverflow.com/questions/71270113

            QUESTION

            C++ concept that checks a value for requirements
            Asked 2022-Feb-19 at 13:09

            Is there a way to use c++20s concepts to check that a value meets some requirements?

            Lets say I am writing some sort of container that uses paging and i want to make the page size a template parameter.

            ...

            ANSWER

            Answered 2022-Feb-19 at 13:01

            The easiest way would be to constrain the template parameters of the class.

            Source https://stackoverflow.com/questions/71185030

            QUESTION

            Android Build Error: "lStar not found..."
            Asked 2022-Feb-18 at 06:59

            I have error like this after trying to build my apps in Emulator

            /Users/joel/.gradle/caches/transforms-3/06231cc1265260b25a06bafce7a4176f/transformed/core-1.7.0-alpha02/res/values/values.xml:105:5-114:25: AAPT: error: resource android:attr/lStar not found.

            I don't know what causes this error. After digging some answer which has similarly error (but in flutter) Problem. But still not solved my issue.

            I have this dependency in my project

            ...

            ANSWER

            Answered 2021-Sep-28 at 17:18

            I managed to fix this by upgrading compileSdk to 31 and kotlin gradle plugin to 1.5.10

            Source https://stackoverflow.com/questions/69041630

            QUESTION

            Wierd infinite loop with useEffect and useCallback
            Asked 2022-Feb-15 at 03:10

            Ok then. I have this code and is just for practice so it could be a bit messy (please ignore the cammelCase convention or bad practices unless they are the cause of the problem, beacause I've already take note of it), howerver i'm going to describe what it does and I'll show the code.

            I have this componet that is rendered without data at first time, then when the users click a button (in a parrent component) an API it's called (also in the parrent) and the response is sended to this problematic component through props. After de data from the API is recived (props.rows), a useEffect is executed to format this data and store it in state (Rows). When Rows value changes, another useEffect should be executed and manipulate Rows (without mutating it) to create another kind of data (TotalPages). The thing is that when I call setTotalPages() this produce an infinite loop and I get the error Uncaught Error: Too many re-renders. React limits the number of renders to prevent an infinite loop.

            I'll show the code now

            This is the problematic component

            ...

            ANSWER

            Answered 2022-Feb-15 at 03:10

            Well, the error was such a pain in the **s but it was quite simple, in the JSX of RgridTest you can see that there is a button that calls a callback right there

            Source https://stackoverflow.com/questions/71118310

            QUESTION

            type 'String' is not a subtype of type 'int' of 'index' while getting media fields using the instagram API
            Asked 2022-Feb-05 at 08:59

            i'm trying to get media fields from the instagram api and i'm getting this error

            ...

            ANSWER

            Answered 2022-Feb-01 at 18:30

            QUESTION

            Is the Linux paging model an abstraction?
            Asked 2022-Feb-05 at 04:45

            I'm currently reading the Understanding the Linux kernel Third Edition and I'm on chapter 2 about memory addressing. At first the book covers paging in 32 bit, PAE 32 bit, and PSE (we are talking about x86 here). More specifically the anatomy of linear address and what bits are for what tables, offsets, etc... I started to get confused about the paging model in Linux. At one moment the book was talking about directory, table, and offset bits of a linear address (PDPT table for PAE) and next I was thrown into the world of "Linux" paging. Now with the Linux paging they talk about Global, Upper, and Middle tables with table and offset? I don't see how the x86 MMU paging relates to this new Linux model at all. If the MMU is in charge of translating (paging) addresses, why does the kernel need this paging model as well? It just seems like the kernel should just leave it up to the MMU. If anyone could elaborate on why the kernel has this, that would be great!

            I understand that the MMU has to translate address based on the tables that the kernel manages. So, the MMU is in charge of address translation (from memory accesses from a process running on a core) but the kernel is not! So why do we have this Global, Upper, and Middle tables with table and offset stuff?

            Or maybe this Linux paging model is more abstract than I'm making it to be! Maybe the idea of this kernel page table is not really a table but a set of kernel macros specifying the properties of the many levels of page directories/tables that the kernel has to maintain! For example, the PGD_SIZE, PUD_SIZE and the other SIZE macros (along with the SHIFT and MASK macros) specify the different properties of the levels of paging. Based on these macros (of course there are other macros) the kernel can generate the correct page tables in memory? This Linux paging model can adjust the SHIFT macros based on the specific architecture (more specifically the bit layout of linear addresses on the specific architecture)?

            ...

            ANSWER

            Answered 2022-Feb-05 at 04:45

            At one moment the book was talking about directory, table, and offset bits of a linear address (PDPT table for PAE) and next I was thrown into the world of "Linux" paging. Now with the Linux paging they talk about Global, Upper, and Middle tables with table and offset?

            Yeah... this can get pretty confusing pretty quickly. When the Intel manual talks about paging, page table entries at different levels are called:

            • PML5E = Page Map Level 5 Entry
            • PML4E = Page Map Level 4 Entry
            • PDPTE = Page Directory Pointer Table Entry
            • PDE = Page Directory Entry
            • PTE = Page Table Entry

            As you can deduce from the above names, x86 supports up to 5 levels of page tables (on modern processors). There are different paging models that can be used on any given processor based on its capabilities, for example 32bit without PAE paging uses 2-level page tables: we only have PDEs and PTEs, and CR3 points to a page directory). More page table levels can be set up and used, and in that case we begin talking about PDPTEs (for 3-level paging), PML4Es (4-level paging) and PML5Es (5-level paging).

            Now of course page tables are pretty much an ubiquitous concept amongst most CPU architectures, not only x86. However each architecture has its specific way of naming page table entries at different levels. Linux supports a lot of different architectures, so it gives page table entries some "generic" names:

            • pgd_t = Page Global Directory entry
            • p4d_t = Page level-4 Directory entry
            • pud_t = Page Upper Directory entry
            • pmd_t = Page Middle Directory entry
            • pte_t = Page Table Entry

            Now this is where it could get confusing. There is a major distinction to be made between Intel's and Linux's naming convention. Regardless of the number of levels of page tables, for Linux the Page Global Directory always represents the root (so pgd_t always represents highest-level entries):

            • For 5-level paging, the correspondence between Intel names and Linux names is just plain and simple: pgd_t:PML5E, p4d_t:PML4E, pud_t:PDPTE, pmd_t:PDE, pte_t:PTE.
            • For 4-level paging, we have pgd_t:PML4E, and p4d_t is unnecessary, so it essentially becomes an alias for pgd_t (before 5-level paging support, there simply was no p4d_t at all).
            • Analogously, for 3-level paging we have pgd_t:PDPTE, and for 2-level pgd_t:PDE.

            If the MMU is in charge of translating (paging) addresses, why does the kernel need this paging model as well? It just seems like the kernel should just leave it up to the MMU.

            Well, yeah, the kernel does leave the work to the MMU. What we are talking about here are just naming conventions. Linux does not use another paging model on top of the one already used by the MMU, it just has a different and more generic way of naming things, that's it.

            Maybe the idea of this kernel page table is not really a table but a set of kernel macros specifying the properties of the many levels of page directories/tables that the kernel has to maintain!

            [...]

            Based on these macros (of course there are other macros) the kernel can generate the correct page tables in memory? This Linux paging model can adjust the SHIFT macros based on the specific architecture (more specifically the bit layout of linear addresses on the specific architecture)?

            Yes, yes and yes. You got it. That's exactly the rationale behind this naming abstraction. The kernel only calls things one way, but adjusts macros (e.g. PMD_OFFSET), types (e.g. pmd_t), and logic based on the underlying architecture.

            Source https://stackoverflow.com/questions/70994919

            QUESTION

            Flutter - how using SliverAppBar with Infinite Scroll Pagination?
            Asked 2021-Dec-21 at 13:09

            I using Infinite Scroll Pagination plugin in my flutter's app. I need also using SilverAppBar in my page. This is my code:

            ...

            ANSWER

            Answered 2021-Dec-20 at 04:09

            it's happening because tabBarView needs normal box children rather than slivers because it uses pageview by default as you can read here in official documentation.

            if you use normal list instead of slivers like below it will solve the problem:

            Source https://stackoverflow.com/questions/70369703

            QUESTION

            Why should AsyncPagingDataDiffer submitData() freeze and timeout the test?
            Asked 2021-Dec-12 at 21:23

            I'm trying to follow this documentation here concerning how to unit test a PagingData stream on which you're applying transforms. The code I am using is similar:

            ...

            ANSWER

            Answered 2021-Dec-12 at 21:23

            the following works here:

            Source https://stackoverflow.com/questions/70204898

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

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            Install paging

            You can download it from GitHub.

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