regex101: camel assistant solution parse

Non-Capturing Group(?:Solution:)?

?repeats the group contents below at most once:

Solution:the literal text Solution: (case sensitive)

\s*any whitespace character, repeated any number of times

Non-Capturing Group(?:\d+\. )?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 1(.+?)

.+?any character, repeated at least once

Positive Lookahead(?=\n(?:Solution:|\d+\. )|\Z)

1st Alternative\n(?:Solution:|\d+\. )

\na line-feed (newline) character (ASCII 10)

Non-Capturing Group(?:Solution:|\d+\. )

1st AlternativeSolution:

Solution:the literal text Solution: (case sensitive)

2nd Alternative\d+\.

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

2nd Alternative\Z

\Zend of string, or before its final line terminator

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

s modifier: single line. Allows a dot to match line terminators

Search reference

Regular Expression

(?:Solution:)?\s*(?:\d+\. )?(.+?)(?=\n(?:Solution:|\d+\. )|\Z)

New

Solution: To create a Nextflow configuration file, follow these steps:

1. Create a new file named `nextflow.config` in the project directory.
2. Declare the configuration options by using the `params` keyword followed by variable names and their default values. For example:

```
params {
    inputDir = './input'
    outputDir = './output'
    numThreads = 4
}
```

3. You can also override the default values in the configuration file by specifying new values when running the pipeline. For example:

```
nextflow run my_pipeline.nf --inputDir /path/to/input --outputDir /path/to/output --numThreads 8
```

4. Save the file and use it in your pipeline by calling the parameter name with the `$` symbol. For example:

```
process myProcess {
    input:
    file fastq from "$inputDir/*_R{1,2}.fastq.gz"
    output:
    file("${outputDir}/${sampleName}_mapped.bam")
    script:
    """
    my_command --input $fastq --threads $numThreads --output ${outputDir}/${sampleName}_mapped.bam
    """
}
```

Next request.

Regular Expressions 101

Regular Expression

Extraction