struc | Better binary packing for Go | Serialization library

by lunixbochs Go Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | struc Summary

struc is a Go library typically used in Utilities, Serialization applications. struc has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Struc exists to pack and unpack C-style structures from bytes, which is useful for binary files and network protocols. It could be considered an alternative to encoding/binary, which requires massive boilerplate for some similar operations. Take a look at an [example comparing struc and encoding/binary] Struc considers usability first. That said, it does cache reflection data and aims to be competitive with encoding/binary struct packing in every way, including performance. Types can be indicated as arrays/slices using [] syntax. Example: []int64, [8]int32. Bare slice types (those with no [size]) must have a linked Sizeof field. Private fields are ignored when packing and unpacking. BenchmarkEncode uses struc. Stdlib benchmarks use equivalent encoding/binary code. Manual encodes without any reflection, and should be considered an upper bound on performance (which generated code based on struc definitions should be able to achieve).

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Quality

Security

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Support

struc has a low active ecosystem.

It has 444 star(s) with 37 fork(s). There are 13 watchers for this library.

It had no major release in the last 6 months.

There are 43 open issues and 26 have been closed. On average issues are closed in 396 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of struc is current.

Quality

struc has 0 bugs and 0 code smells.

Security

struc has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

struc code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

struc is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

struc releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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struc Key Features

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struc Examples and Code Snippets

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Community Discussions

Trending Discussions on struc

Library working with Node.js but not on Browser ( FileReader() vs. fs.readFileSync ) Lib: NBT.js

Is there a way to create a dynamic type assignment in C

Error "non-constant argument supplied to TIMES" from istruc use of a structure

Why do many Win32 Strucs contain their size as a member

Can't get data out of ordered dictionary

Parsing complex JSON, again

Accessing struc members NASM Assembly

How do I access a struct value that is in a set?

Repeated messages in chatView. how to clear view?

TypeError: Data location must be "memory" for return parameter in function, but none was given

QUESTION

Library working with Node.js but not on Browser ( FileReader() vs. fs.readFileSync ) Lib: NBT.js

Asked 2022-Mar-28 at 19:06

Basically I'm using this NBT parsing library to parse .nbt files into the readable decoded data structures.

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ANSWER

Answered 2022-Mar-28 at 19:06

reader.readAsBinaryString(file); Replace this with read.readAsArrayBuffer(file);

Source https://stackoverflow.com/questions/71652294

QUESTION

Is there a way to create a dynamic type assignment in C

Asked 2022-Mar-25 at 23:42

I am working to create a set of functions in C that will allow a dynamically growing array. In this example I have create a struct with a variable titled len that stores the active length of the array, another variable titled size that stores the total length of the array assigned during initialization, and another variable titled array which is a pointer to the memory containing the array data. In this example the variable array is initialized in the struct as an integer. Within the function titled int_array I initialize the array and and return the struct. Within that function I call the init_int_array function that does the heavy lifting. In addition, I have another function titled append_int_array that checks the memory allocation and assigns another chunk of memory if necessary and then appends the array with a new index/variable. As you can see, this example is hard coded for an integer, and I will need to repeat these lines of code for every other data type if I want an array to contain that type of data. There has got to be a way to instantiate the struct so that the variable array can be a different data type so that I do not have to repeat all lines of code for every data type, but I am not sure what that method is. Any help would be appreciated. The code is shown below. NOTE: I also have a function to free the array memory after use, but I am omitting it since it is not relevant to the question.

array.h

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ANSWER

Answered 2022-Mar-25 at 23:42

A simple solution is rewrite your header like this:

Source https://stackoverflow.com/questions/71617615

QUESTION

Error "non-constant argument supplied to TIMES" from istruc use of a structure

Asked 2022-Mar-14 at 18:23

I have recently started back up on my project and am getting an error when I compile my nasm program. I am using nasm 2.15.05 and am compiling in DOSBox, I have also tried FreeDOS in VirtualBox but I suspect it has nothing to do with the environment. The error that is produced is:

non-constant argument supplied to TIMES.

I am not using times in the source file which threw me but I looked at the listing and it's the istruc macro. Here is the relevant block from the listing file:

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ANSWER

Answered 2022-Mar-14 at 18:17

This error is caused by defining the struc structure after its use by the istruc macro.

First, look at this test to see how it works correctly when using your example, with the struc occurring in the source before its use by istruc:

Source https://stackoverflow.com/questions/71471039

QUESTION

Why do many Win32 Strucs contain their size as a member

Asked 2022-Feb-03 at 21:34

This is not strictly a programming question but more of a design question.

Working with some strucs from the WinAPI I noticed that many of them contain a field called dwSize that simpally stores their size e.g THREADENTRY32 or BLUETOOTH_DEVICE_SEARCH_PARAMS

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ANSWER

Answered 2022-Feb-03 at 21:34

This is to support future versions of that structure that might have new fields added to it.

Source https://stackoverflow.com/questions/70978478

QUESTION

Can't get data out of ordered dictionary

Asked 2022-Jan-25 at 18:38

I'm trying to get data out of my ordered dictionary, and for some reason it's not printing the data in it. I can get to the first item in the data structure, but I'm having trouble iterating over all the rows. I'm using PowerShell 5.1 and visual studio code.

The code queries an mdb file, and returns multiple rows.

...

ANSWER

Answered 2022-Jan-25 at 16:36

You can loop over each key-value entry in a dictionary by explicitly calling GetEnumerator() on it and passing the resulting enumerator to foreach or a pipeline-enabled cmdlet:

Source https://stackoverflow.com/questions/70852065

QUESTION

Parsing complex JSON, again

Asked 2022-Jan-13 at 16:52

I have some JSON that get via an API call and I want to now parse this using JSON, I followed an online tutorial in how to parse JSON using structs, but my actual JSON is a lot more complex than the one they used. Here is an example of the JSON I have:

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ANSWER

Answered 2022-Jan-13 at 16:52

First off

The problem I expect you're having is not using the tags. To parse a JSON the names of the structs must match the names in the JSON fields. Read here Golang Marshal
Secondly wfMetadata has a lowecase first letter, meaning it will not be imported.
Thirdly, workflow.metadata and workflow.items[i].spec.arguments is set as a {} and not the emptystring "". I assume they're not supposed to be string. This can be avoided using the open interface{} if you don't know or care, or actually implementing them using the official documentations from the API you're connecting to.
As a note, using []struct seems wrong to me. Instead define it in the usage

Note, by using an IDE like GoLand from jetbrains they first off support converting JSON to a struct by simply pasting the JSON into a .go file. They might be daunting at first but do help a lot, and would do much of this for you in seconds.

Now try this instead, and understand why and how this is better and working.

Source https://stackoverflow.com/questions/70698868

QUESTION

Accessing struc members NASM Assembly

Asked 2021-Dec-25 at 00:08

Coming from Object Oriented languages such as Python and Java, why is this code not working as I would like it to?

I want to access the cat struc variable cat_name and send it to STDOUT to print in my terminal.

catstruct.asm:

...

ANSWER

Answered 2021-Dec-25 at 00:08

cat_name just contains 0, the offset of the cat name from the start of the struct, you need

Source https://stackoverflow.com/questions/70477162

QUESTION

How do I access a struct value that is in a set?

Asked 2021-Dec-03 at 17:38

I am learning to code in c++ and I am learning to use sets currently, with the code (I will not use the specific code because of the length but will use an example) it wants me to use a struct and a set and with the things that needs to be done I need to be able to access and edit a variable in said struct while iterating through the set.

Here is an example of what I am trying to do:

...

ANSWER

Answered 2021-Dec-03 at 17:26

std::set ensures it's elements are unique by having them in order. By default, that uses <. You don't have a < for myStruct, nor do you make a set with a different order.

The simplest fix would be to add

Source https://stackoverflow.com/questions/70218338

QUESTION

Repeated messages in chatView. how to clear view?

Asked 2021-Oct-13 at 00:07

I have a chatView with a list of chatRow Views (messages)
each chatView has a snapshot listener with firebase, so I should get real time updates if I add a new message to the conversation

The problem I have is: when I add a new message my chatView shows ALL the messages I added before plus the new message, PLUS the same list again....if I add another message then the list repeats again

I assume I need to drop/refresh the previous views shown in the Foreach loop...how can I drop/refresh the view so it can receive refreshed NON repeated data?

...

ANSWER

Answered 2021-Oct-12 at 23:58

You've defined mensajesTotal outside of your snapshot listener. So, it's getting appended to every time.

To fix this, move this line:

Source https://stackoverflow.com/questions/69548095

QUESTION

TypeError: Data location must be "memory" for return parameter in function, but none was given

Asked 2021-Sep-01 at 08:20

I want to have a getter for a mapping. I have this mapping and this struc:

...

ANSWER

Answered 2021-Sep-01 at 07:46

    function getProyect(uint _id) public returns (uint, string memory, string memory, address){
        Proyect memory _proyect = proyects[_id];
        return(_proyect.id, _proyect.hash,_proyect.name,_proyect.author);
    }

Source https://stackoverflow.com/questions/69009602

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Vulnerabilities

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Install struc

You can download it from GitHub.

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