Top "Pipeline" questions

A pipeline is a sequence of functions (or the equivalent thereof), composed so that the output of one is input for the next, in order to create a compound transformation.

How do I make a Jenkins job start after multiple simultaneous upstream jobs succeed?

In order to get the fastest feedback possible, we occasionally want Jenkins jobs to run in Parallel. Jenkins has the …

plugins build continuous-integration jenkins pipeline
How to extract tar archive from stdin?

I have a large tar file I split. Is it possible to cat and untar the file using pipeline. Something …

pipe stdin tar pipeline
Singleton array array(<function train at 0x7f3a311320d0>, dtype=object) cannot be considered a valid collection

Not sure how to fix . Any help much appreciate. I saw thi Vectorization: Not a valid collection but not sure …

python pandas scikit-learn pipeline train-test-split
how to use xargs with sed in search pattern

I need to use the output of a command as a search pattern in sed. I will make an example …

bash sed replace pipeline
Writing items to a MySQL database in Scrapy

I am new to Scrapy, I had the spider code class Example_spider(BaseSpider): name = "example" allowed_domains = ["www.example.…

mysql scrapy pipeline web-crawler
Functional pipes in python like %>% from R's magritrr

In R (thanks to magritrr) you can now perform operations with a more functional piping syntax via %>%. This means …

python functional-programming pipeline
how to use "if" statements inside pipeline

I'm trying to use if inside a pipeline. I know that there is where (alias ?) filter, but what if I …

powershell pipeline conditional-statements statements
Pipe complete array-objects instead of array items one at a time?

How do you send the output from one CmdLet to the next one in a pipeline as a complete array-object …

arrays powershell object syntax pipeline
How do you determine if WPF is using Hardware or Software Rendering?

I'm benchmarking a WPF application on various platforms and I need an easy way to determine if WPF is using …

wpf rendering pipeline
How can you diff two pipelines in Bash?

How can you diff two pipelines without using temporary files in Bash? Say you have two command pipelines: foo | bar …

bash diff pipeline