play | Misc explorations

 by   skmetz Ruby Version: Current License: MIT

kandi X-RAY | play Summary

kandi X-RAY | play Summary

play is a Ruby library. play has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Misc explorations
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            kandi-support Support

              play has a low active ecosystem.
              It has 36 star(s) with 7 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              play has no issues reported. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of play is current.

            kandi-Quality Quality

              play has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              play 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

              play releases are not available. You will need to build from source code and install.
              play saves you 686 person hours of effort in developing the same functionality from scratch.
              It has 1589 lines of code, 224 functions and 18 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of play
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            play Key Features

            No Key Features are available at this moment for play.

            play Examples and Code Snippets

            No Code Snippets are available at this moment for play.

            Community Discussions

            QUESTION

            Does opening a file in a child process create a separate entry in the system open file table in the kernel?
            Asked 2021-Jun-15 at 23:17

            I understand that after calling fork() the child process inherits the per-process file descriptor table of its parent (pointing to the same system-wide open file tables). Hence, when opening a file in a parent process and then calling fork(), both the child and parent can write to that file without overwriting one another's output (due to a shared offset in the open-file table entry).

            However, suppose that, we call open() on some file after a fork (in both the parent and the child). Will this create a separate entries in the system-wide open file table, with a separate set of offsets and read-write permission flags for the child (despite the fact that it's technically the same file)? I've tried looking this up and I don't seem to be able to find a clear answer.

            I'm asking this mainly since I was playing around with writing to files, and it seems like only one the outputs of the parent and child ends up in the file in the aforementioned situation. This seemed to imply that there are separate entries in the open file table for the two separate open calls, and hence separate offsets, so the slower process overwrites the output of the other process.

            To illustrate this, consider the following code:

            ...

            ANSWER

            Answered 2021-May-03 at 20:22

            There is a difference between a file and a file descriptor (FD).

            All processes share the same files. They don't necessarily have access to the same files, and a file is not its name, either; two different processes which open the same name might not actually open the same file, for example if the first file were renamed or unlinked and a new file were associated with the name. But if they do open the same file, it's necessarily shared, and changes will be mutually visible.

            But a file descriptor is not a file. It refers to a file (not a filename, see above), but it also contains other information, including a file position used for and updated by calls to read and write. (You can use "positioned" read and write, pread and pwrite, if you don't want to use the position in the FD.) File descriptors are shared between parent and child processes, and so the file position in the FD is also shared.

            Another thing stored in the file descriptor (in the kernel, where user processes can't get at it) is the list of permitted actions (on Unix, read, write, and/or execute, and possibly others). Permissions are stored in the file directory, not in the file itself, and the requested permissions are copied into the file descriptor when the file is opened (if the permissions are available.) It's possible for a child process to have a different user or group than the parent, particularly if the parent is started with augmented permissions but drops them before spawning the child. A file descriptor for a file opened in this manner still has the same permissions uf it is shared with a child, even if the child would itself be able to open the file.

            Source https://stackoverflow.com/questions/67375028

            QUESTION

            Application Insights starttrackevent stopstrackevent across pages in a single session
            Asked 2021-Jun-15 at 22:35

            I am having trouble tracking down documentation on this, so hoping someone knows as I am not able to get application insights to capture telemetry on starttrackevent and stopstrackevent across pages. This is an asp.net mvc application, so SPA is not in play here.

            I am worried I may be doing something incorrectly, however the likely case is it doesn't support it.

            Flow:

            • user hits site for the first time
            • user does action that triggers startTrackEvent("eventName");
            • user navigates to a new page
            • user does action that triggers stopTrackEvent("eventName");

            -- from the appInsights readme https://github.com/microsoft/ApplicationInsights-JS/blob/master/README.md

            appInsights.startTrackEvent("event");

            appInsights.stopTrackEvent("event", null, {customProp1: "some value"});

            ...

            ANSWER

            Answered 2021-Jun-15 at 22:35

            Not per documentation, but via testing, can confirm that when a new page loads, appInsights will not persist start/stoptrackevent.

            Source https://stackoverflow.com/questions/67929386

            QUESTION

            Need help understanding typecasting const void pointer in C
            Asked 2021-Jun-15 at 21:49

            I have trouble understanding the first line of code inside this implementation of the bsearch function in C. I understand the search algorithm itself and I have played around with this function to get a good grasp of it but I still do not get what

            ...

            ANSWER

            Answered 2021-Jun-15 at 21:44

            Within the function you need to find each element in the passed array. However the type of the array is unknown. You only know the size of each element of the array and the starting address of the array that is passed through the parameter base0. of the type const void *..

            To access an element of the array you need to use the pointer arithmetic. But the type void is incomplete type. Its size is unknown/ So you may not use the pointer of the type (const) void *` in expressions with the pointer arithmetic.

            Thus this declaration

            Source https://stackoverflow.com/questions/67993505

            QUESTION

            Convert interface with nullable string property to string property
            Asked 2021-Jun-15 at 18:49

            I have the following two interfaces, one which allows a nullable vin, the other that doesn't:

            ...

            ANSWER

            Answered 2021-Jun-15 at 18:49

            You can use a type predicate to define a user-defined type guard like this:

            Source https://stackoverflow.com/questions/67989014

            QUESTION

            Lifetime of async closure return type
            Asked 2021-Jun-15 at 18:22

            Consider the following code:

            ...

            ANSWER

            Answered 2021-Jun-15 at 18:22

            i think you are looking for this:

            Source https://stackoverflow.com/questions/67991159

            QUESTION

            kotlin return type of nullable?.let{}
            Asked 2021-Jun-15 at 18:10

            I'm new to Kotlin and i'm playing a bit with android studio from few days. This is the class i'm dealing with:

            ...

            ANSWER

            Answered 2021-Jun-15 at 18:10

            let returns the result of last expression inside it, in this case the value of builder.create(), a non-nullable AlertDialog.

            Since you use ?.let, if activity is null, let won't be called, and you will effectively have null ?: throw....

            builder.create() never returns null, so this throw expression is only reached when activity is null, so the error message doesn't make sense.

            Source https://stackoverflow.com/questions/67991280

            QUESTION

            Qt - trying to align two GroupBoxes in a layout
            Asked 2021-Jun-15 at 17:18

            A part of my form contains QGroupBox (Status Box) with 4 child QGroupBoxes arranged in a grid layout (2x2). Two bottom QGroupBoxes (Widget 1 Box and Widget 2 Box) contain widgets of fixed size (with set minimumSize and maximumSize) so they're non-resizable at all in both directions. Because of that rigid size constraints top row of QGroupBoxes (Summary Box and Helper Box) can only be resized in vertical direction.

            And here comes the troublesome part. Top-left QGroupBox (Summary Box) have grid layout 5x3 while top-right (Helper Box) have vertical layout with 6 rows. If I have naive widget placement as shown on picture 1 Qt is enlarging vertical size of both labels in top row to make height of both QGroupBoxes equal (see red arrows on picture 1).

            This is definitely that I don't want so I've added vertical spacer to the bottom of Summary Box and from the first glance it worked (picture 2). But only from the first glance... What you see is the minimum height of my whole form and the bottom side of spacer and last QCheckBox in the Helper Box seems to be aligned.

            If I'm expanding my form vertically this spacer grows a bit and that causes the increase of height of both top QGroupBoxes. As a result spacing between QCheckBoxes increases too and we can also see that top and bottom spacing are unequal for the top-right box (see red arrows on picture 3).

            I've tried to play with sizeType for my vertical spacer. If I set it to Minimum or MinimumExpanding then the spacer doesn't grow on resize (and doesn't shrink, too) but it appears to be expanded to the size as on picture 3 (corrupting spacings between QCheckBoxes too). If I set it to Maximum, Preferred or Expanding then I observe the same behavior as described above for picture 3.

            What is the proper way to achieve alignment for two QGroupBoxes in a row of grid without affecting spacing between elements (e. g. in that case make vertical spacer to fit only single row of grid layout and never expand/shrink)?

            ...

            ANSWER

            Answered 2021-Jun-15 at 17:18

            Items will be aligned if both QGroupBoxes have same count of children and each row have at least one child with Expanding vertical policy. Instead of spacer use QWidget

            I removed unrelated widgets and reduces number of rows to 4 for demonstration purposes (less xml).

            Source https://stackoverflow.com/questions/67987476

            QUESTION

            How to read a file from within a move FnMut closure that runs multiple times?
            Asked 2021-Jun-15 at 16:56

            I'm using glutin and so have a move closure for my program's main loop and I'm trying to play an audio file with the rodio crate. With the following code everything works and I get one beep every time the program loops:

            ...

            ANSWER

            Answered 2021-Jun-15 at 16:27
            The Problem

            Basically, the problem at hand is that rodio::Decoder::new consumes the value which it reads from (well, actually it is already consumed by BufReader::new). So, if you have a loop or a closure that can be called multiple times, you have to come up with a fresh value each time. This what File::open does in your first code snipped.

            In your second code snipped, you only create a File once, and then try to consume it multiple times, which Rust's ownership concept prevents you from doing.

            Also notice, that using reference is sadly not really an option with rodio since the decoders must be 'static (see for instance the Sink::append trait bound on S).

            The Solution

            If you think your file system is a bit slow, and you want to optimize this, then you might actually want to read the entire file up-front (which File::open doesn't do). Doing this should also provide you with a buffer (e.g. a Vec) that you can clone, and thus allows to repeatedly create fresh values that can be consumed by the Decoder. Here is an example doing this:

            Source https://stackoverflow.com/questions/67988070

            QUESTION

            problem with character passing through objects / Unity3d
            Asked 2021-Jun-15 at 16:43

            My character can move into other objects only when he moves in both directions. I left the my character code and photo of my question here. I would be happy if you help.and i also played with all the colliders and filters of my character and the floor my character is in but still not resolved

            ...

            ANSWER

            Answered 2021-Jun-15 at 16:21

            Add collider to both character and objects. Make sure the character is placed correctly placed in the scene. Also make sure that character has rigidbody.

            Source https://stackoverflow.com/questions/67989772

            QUESTION

            Node.js can't read else if or else part
            Asked 2021-Jun-15 at 15:41

            I wrote a discord bot. "o" is first letter of play. "atla" is skip. When I wrote -o MUSIC_NAME, music is adding queue and starting to play. And when I write again, just adding queue. Everything is okay still here. When I wrote -atla. It's also working perfectly. But when I allow to changing auto music itself, it's changing music automatically. But problem is here. The end of the last music not working else if (list.length === 0) block in endHandler function. How can I fix that? Thanks for your attention.

            ...

            ANSWER

            Answered 2021-Jun-15 at 15:41

            I'm not familiar with Discord bots but I don't think your endHandler will ever run the else if part the way it is because your code is always creating a new dispatcher when it plays the next song, but never sets up a finish handler for it.

            Source https://stackoverflow.com/questions/67988144

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

            Vulnerabilities

            No vulnerabilities reported

            Install play

            You can download it from GitHub.
            On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.

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