pipeline | The missing pipe operator
kandi X-RAY | pipeline Summary
kandi X-RAY | pipeline Summary
Pipeline makes dealing with iterable types as easy as it can be, making it a perfect tool for bespoke data processing pipelines, hence the name. If you ever piped together several bash commands where one command uses output of another in succession, this library does just that but for PHP functions, generators, arrays, and iterators. Pipeline comes with the most important yet basic building blocks. It boasts methods to map, filter, reduce, zip, and unpack data from arbitrary generators and from all kinds of standard iterators. This rigorously tested library just works. Pipeline neither defines nor throws any exceptions.
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Top functions reviewed by kandi - BETA
- Slice an array .
- Apply a callback to the pipeline .
- Merges an array of arrays into one .
- Cast the value to a scalar .
- Filters the pipeline using a callback .
- Get the pipeline as array .
- Reads a list of records from a list .
- Returns the number of values in the pipeline .
- Resolve a predicate .
- Skips over an iterable .
pipeline Key Features
pipeline Examples and Code Snippets
Lines of Code : 67License : Permissive (Apache-2.0)
Copyuse function Pipeline\take;
// iterable corresponds to arrays, generators, iterators
// we use an array here simplicity sake
$iterable = range(1, 3);
// wrap the initial iterable with a pipeline
$pipeline = take($iterable);
// join side by side wi $pipeline->map(function ($args) {
list ($a, $b) = $args;
// and so on
});
$pipeline->map(function () {
yield [-1, [10, 20], new DateTime()];
});
$pipeline->unpack(function ($a, array $b, \DateTime ...$dates) {
// and so on
$pipeline->map(function (Customer $customer) {
foreach ($customer->allPayments() as $item) {
yield $item;
}
});
// Now process all and every payment
$pipeline->map(function (Payment $payment) {
return $payment->amount Community Discussions
Trending Discussions on pipeline
QUESTION
I wish to suggest (perhaps enforce, but I am not firm on the semantics yet) a particular format for the output of a PowerShell function.
about_Format.ps1xml (versioned for PowerShell 7.1) says this: 'Beginning in PowerShell 6, the default views are defined in PowerShell source code. The Format.ps1xml files from PowerShell 5.1 and earlier versions don't exist in PowerShell 6 and later versions.'. The article then goes on to explain how Format.ps1xml files can be used to change the display of objects, etc etc. This is not very explicit: 'don't exist' -ne 'cannot exist'...
This begs several questions:
- Although they 'don't exist', can Format.ps1xml files be created/used in versions of PowerShell greater than 5.1?
- Whether they can or not, is there some better practice for suggesting to PowerShell how a certain function should format returned data? Note that inherent in 'suggest' is that the pipeline nature of PowerShell's output must be preserved: the user must still be able to pipe the output of the function to Format-List or ForEach-Object etc..
For example, the Get-ADUser cmdlet returns objects formatted by Format-List. If I write a function called Search-ADUser that calls Get-ADUser internally and returns some of those objects, the output will also be formatted as a list. Piping the output to Format-Table before returning it does not satisfy my requirements, because the output will then not be treated as separate objects in a pipeline.
Example code:
...ANSWER
Answered 2021-Jun-15 at 18:36Although they 'don't exist', can
Format.ps1xmlfiles be created/used in versions of PowerShell greater than 5.1?
Yes; in fact any third-party code must use them to define custom formatting.
- That
*.ps1xmlfiles are invariably needed for such definitions is unfortunate; GitHub issue #7845 asks for an in-memory, API-based alternative (which for type data already exists, via theUpdate-TypeDatacmdlet).
- That
It is only the formatting data that ships with PowerShell that is now hardcoded into the PowerShell (Core) executable, presumably for performance reasons.
is there some better practice for suggesting to PowerShell how a certain function should format returned data?
The lack of an API-based way to define formatting data requires the following approach:
Determine the full name of the .NET type(s) to which the formatting should apply.
If it is
[pscustomobject]instances that the formatting should apply to, you need to (a) choose a unique (virtual) type name and (b) assign it to the[pscustomobject]instances via PowerShell's ETS (Extended Type System); e.g.:For
[pscustomobject]instances created by theSelect-Objectcmdlet:
QUESTION
I created an empty asp.net core web application (dotnet new web -n ) and went to the github for IdentityServer4.Quickstart.UI and was followed the instructions to add the quickstart UI. I first did the powershell cmd iex ((New-Object System.Net.WebClient).DownloadString('https://raw.githubusercontent.com/IdentityServer/IdentityServer4.Quickstart.UI/main/getmain.ps1')) to download the files and run the application but it keeps telling me Index not found but the file is inside of the Views folder. So I then deleted all those files it downloaded from the project and installed it using its templates by running the cmds dotnet new -i identityserver4.templates then dotnet new is4ui --force which downloaded those files again onto my project. However, it keeps telling me the same message.
I noticed that under the Quickstart folder, contains a folder named Home which has the HomeController.cs and the namespace is as IdentityServerHost.Quickstart.UI... do I need to change that namespace to match my solution i.e. ids.Quickstart.Home?
What is causing this to display that error when infact there is the Index.cshtml file inside of the Views folder?**
This is my startup.cs file:
ANSWER
Answered 2021-Jun-15 at 14:49Try changing your app.UseEndpoints( endpoints => ...) line, in your Configure() method to the following:
QUESTION
I am trying to create scatter plots of all the combinations for the columns: insulin, sspg, glucose (mclust, diabetes dataset, in R) with class as the colo(u)r. By that I mean insulin with sspg, insulin with glucose and sspg with glucose.
And I would like to do that with tidyverse, purrr, mappings and pipe operations. I can't quite get it to work, since I'm relatively new to R and functional programming.
When I load the data I've got the columns: class, glucose, insulin and sspg. I also used pivot_longer to get the columns: attr and value but I was not able to plot it and don't know how to create the combinations.
I assume that there will be an iwalk() or map2() function at the end and that I might have to use group_by() and nest() and maybe combn(., m=2) for the combinations or something like that. But it will probably have some way simpler solution that I can not see myself.
My attempts have amounted to this:
...ANSWER
Answered 2021-Jun-15 at 17:34library(mclust)
#> Package 'mclust' version 5.4.7
#> Type 'citation("mclust")' for citing this R package in publications.
library(tidyverse)
data("diabetes")
QUESTION
I'm trying to understand how the "fetch" phase of the CPU pipeline interacts with memory.
Let's say I have these instructions:
...ANSWER
Answered 2021-Jun-15 at 16:34It varies between implementations, but generally, this is managed by the cache coherency protocol of the multiprocessor. In simplest terms, what happens is that when CPU1 writes to a memory location, that location will be invalidated in every other cache in the system. So that write will invalidate the line in CPU2's instruction cache as well as any (partially) decoded instructions in CPU2's uop cache (if it has such a thing). So when CPU2 goes to fetch/execute the next instruction, all those caches will miss and it will stall while things are refetched. Depending on the cache coherency protocol, that may involve waiting for the write to get to memory, or may fetch the modified data directly from CPU1's dcache, or things might go via some shared cache.
QUESTION
I have a code snippet below
...ANSWER
Answered 2021-Jun-15 at 14:26ctr=0
for ptr in "${values[@]}"
do
az pipelines variable-group variable update --group-id 1543 --name "${ptr}" --value "${az_create_options[$ctr]}" #First element read and value updated
az pipelines variable-group variable update --group-id 1543 --name "${ptr}" --value "${az_create_options[$ctr]}" #Second element read and value updated
ctr=$((ctr+1))
done
QUESTION
I have dataflow pipeline, it's in Python and this is what it is doing:
Read Message from PubSub. Messages are zipped protocol buffer. One Message receive on a PubSub contain multiple type of messages. See the protocol parent's message specification below:
...
ANSWER
Answered 2021-Apr-16 at 18:49How about using TaggedOutput.
QUESTION
This question is related to Azure MSIX Build and Package task only has Release and Debug configurations
We have a WinForms project that has an MSIX installer. Manually, we can successfully create
- An MSIXBUNDLE and deploy it to Kudu
- An MSIX and deploy it to an Azure VM through a VHDX. We have manually convert the MSIX to a VHDX first
We are now trying to automate the build and release process to create the VHDX. However, we are getting a blank screen when the VHDX is mounted using a process that we have already validated. The only thing different is the build method (i.e., MSBuild versus VS Publish).
How do we create a working VHDX in Azure CI Build Pipeline?
Below is the YAML.
...ANSWER
Answered 2021-Jun-15 at 14:26Actually, there is nothing wrong with the YAML. The problem was a delay in the virtual machine loading the VHDX. In other words, wait about 5 minutes once the VHDX is mounted before trying to run the application. I am leaving this here in case anyone else runs into this issue.
QUESTION
The Question
How do I best execute memory-intensive pipelines in Apache Beam?
Background
I've written a pipeline that takes the Naemura Bird dataset and converts the images and annotations to TF Records with TF Examples of the required format for the TF object detection API.
I tested the pipeline using DirectRunner with a small subset of images (4 or 5) and it worked fine.
The Problem
When running the pipeline with a bigger data set (day 1 of 3, ~21GB) it crashes after a while with a non-descriptive SIGKILL.
I do see a memory peak before the crash and assume that the process is killed because of a too high memory load.
I ran the pipeline through strace. These are the last lines in the trace:
ANSWER
Answered 2021-Jun-15 at 13:51Multiple things could cause this behaviour, because the pipeline runs fine with less Data, analysing what has changed could lead us to a resolution.
Option 1 : clean your input dataThe third line of the logs you provide might indicate that you're processing unclean data in your bigger pipeline mmap(NULL, could mean that | "Get Content" >> beam.Map(lambda x: x.read_utf8()) is trying to read a null value.
Is there an empty file somewhere ? Are your files utf8 encoded ?
Option 2 : use smaller files as inputI'm guessing using the fileio.ReadMatches() will try to load into memory the whole file, if your file is bigger than your memory, this could lead to errors. Can you split your data into smaller files ?
If files are too big for your current machine with a DirectRunner you could try to use an on-demand infrastructure using another runner on the Cloud such as DataflowRunner
QUESTION
I'm using the Jfrog Artifactory plugin in my Jenkins pipeline to pull some in-house utilities that the pipelines use. I specify which version of the utility I want using a parameter.
After executing the server.download, I'd like to verify and report which version of the file was actually downloaded, but I can't seem to find any way at all to do that. I do get a buildInfo object returned from the server.download call, but I can find any way to pull information from that object. I just get an object reference if I try to print the buildInfo object. I'd like to abort the build and send a report out if the version of the utility downloaded is incorrect.
The question I have is, "How does one verify that a file specified by a download spec is successfully downloaded?"
...ANSWER
Answered 2021-Jun-15 at 13:25This functionality is only available on scripted pipeline at the moment, and is described in the documentation.
For example:
QUESTION
I have a requirement which is as follows:
Variable Group A, has 7 set of key=value pairs Variable Group B, has 7 set of key=value pairs.
In both cases keys are the same, values are only different.
I am asking from the user, the value of be injected in variable group B, user provides me the variable group A name.
Code snippet to perform such update is as below:
...ANSWER
Answered 2021-Jun-15 at 13:07You wrongly used update command:
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