mteb/BrightProStackoverflowRetrieval huggingface dataset:
vaScript%2FReference%2FGlobal_Objects%2FFunction%2Farguments%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fblob%2Fmain%2Ffiles%2Fen-
us%2Fweb%2Fjavascript%2Freference%2Fglobal_objects%2Ffunction%2Farguments%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fcommit%2F70f09675ddcfc75a3bb66d2dce4cf82738948a37%0A*+Document+last+modified%3A+2023-08-21T07%3A19%3A52.000Z%0A%0A%3C%2Fdetails%3E
"This will take you to GitHub to file a new issue.")

[ MDN logo  ](/)

Your blueprint for a better internet.

  * [ MDN on Mastodon  ](https://mozilla.social/@mdn)
  * [ MDN on X (formerly Twitter)  ](https://twitter.com/mozdevnet)
  * [ MDN on GitHub  ](https://github.com/mdn/)
  * [ MDN Blog RSS Feed  ](/en-US/blog/rss.xml)

##  MDN

  * [ About ](/en-US/about)
  * [ Blog ](/en-US/blog/)
  * [ Careers ](https://www.mozilla.org/en-US/careers/listings/?team=ProdOps)
  * [ Advertise with us ](/en-US/advertising)

##  Support

  * [ Product help ](https://support.mozilla.org/products/mdn-plus)
  * [ Report an issue ](/en-US/docs/MDN/Community/Issues)

##  Our communities

  * [ MDN Community ](/en-US/community)
  * [ MDN Forum ](https://discourse.mozilla.org/c/mdn/236)
  * [ MDN Chat ](/discord)

##  Developers

  * [ Web Technologies ](/en-US/docs/Web)
  * [ Learn Web Development ](/en-US/docs/Learn)
  * [ MDN Plus ](/en-US/plus)
  * [ Hacks Blog ](https://hacks.mozilla.org/)

[ Mozilla logo  ](https://www.mozilla.org/)

  * [ Website Privacy Notice ](https://www.mozilla.org/privacy/websites/)
  * [ Cookies ](https://www.mozilla.org/privacy/websites/#cookies)
  * [ Legal ](https://www.mozilla.org/about/legal/terms/mozilla)
  * [ Community Participation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)

Visit  [ Mozilla Corporationâs ](https://www.mozilla.org) not-for-profit
parent, the  [ Mozilla Foundation ](https://foundation.mozilla.org/) .  
Portions of this content are Â©1998â  2024  by individual mozilla.org
contributors. Content available under  [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .

  *[
                 
                  Non-standard
                 
                ]: Non-standard. Check cross-browser support before using.
  *[
                 
                  Deprecated
                 
                ]: Deprecated. Not for use in new websites.
  *[
                
                 Non-standard
                
               ]: Non-standard. Check cross-browser support before using.
  *[
                
                 Deprecated
                
               ]: Deprecated. Not for use in new websites.
ts/mdn-plus)
  * [ Report an issue ](/en-US/docs/MDN/Community/Issues)

##  Our communities

  * [ MDN Community ](/en-US/community)
  * [ MDN Forum ](https://discourse.mozilla.org/c/mdn/236)
  * [ MDN Chat ](/discord)

##  Developers

  * [ Web Technologies ](/en-US/docs/Web)
  * [ Learn Web Development ](/en-US/docs/Learn)
  * [ MDN Plus ](/en-US/plus)
  * [ Hacks Blog ](https://hacks.mozilla.org/)

[ Mozilla logo  ](https://www.mozilla.org/)

  * [ Website Privacy Notice ](https://www.mozilla.org/privacy/websites/)
  * [ Cookies ](https://www.mozilla.org/privacy/websites/#cookies)
  * [ Legal ](https://www.mozilla.org/about/legal/terms/mozilla)
  * [ Community Participation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)

Visit  [ Mozilla Corporationâs ](https://www.mozilla.org) not-for-profit
parent, the  [ Mozilla Foundation ](https://foundation.mozilla.org/) .  
Portions of this content are Â©1998â  2024  by individual mozilla.org
contributors. Content available under  [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .

  *[
                
                 Deprecated
                
               ]: Deprecated. Not for use in new websites.
  *[
                 
                  Deprecated
                 
                ]: Deprecated. Not for use in new websites.
s/MDN/Community/Issues)

##  Our communities

  * [ MDN Community ](/en-US/community)
  * [ MDN Forum ](https://discourse.mozilla.org/c/mdn/236)
  * [ MDN Chat ](/discord)

##  Developers

  * [ Web Technologies ](/en-US/docs/Web)
  * [ Learn Web Development ](/en-US/docs/Learn)
  * [ MDN Plus ](/en-US/plus)
  * [ Hacks Blog ](https://hacks.mozilla.org/)

[ Mozilla logo  ](https://www.mozilla.org/)

  * [ Website Privacy Notice ](https://www.mozilla.org/privacy/websites/)
  * [ Cookies ](https://www.mozilla.org/privacy/websites/#cookies)
  * [ Legal ](https://www.mozilla.org/about/legal/terms/mozilla)
  * [ Community Participation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)

Visit  [ Mozilla Corporationâs ](https://www.mozilla.org) not-for-profit
parent, the  [ Mozilla Foundation ](https://foundation.mozilla.org/) .  
Portions of this content are Â©1998â  2024  by individual mozilla.org
contributors. Content available under  [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .

  *[
                
                 Non-standard
                
               ]: Non-standard. Check cross-browser support before using.
  *[
                
                 Deprecated
                
               ]: Deprecated. Not for use in new websites.
¢  [ Report a problem with this content
](https://github.com/mdn/content/issues/new?template=page-report.yml&mdn-
url=https%3A%2F%2Fdeveloper.mozilla.org%2Fen-
US%2Fdocs%2FWeb%2FJavaScript%2FReference%2FGlobal_Objects%2FArray%2Fof&metadata=%3C%21--+Do+not+make+changes+below+this+line+--%3E%0A%3Cdetails%3E%0A%3Csummary%3EPage+report+details%3C%2Fsummary%3E%0A%0A*+Folder%3A+%60en-
us%2Fweb%2Fjavascript%2Freference%2Fglobal_objects%2Farray%2Fof%60%0A*+MDN+URL%3A+https%3A%2F%2Fdeveloper.mozilla.org%2Fen-
US%2Fdocs%2FWeb%2FJavaScript%2FReference%2FGlobal_Objects%2FArray%2Fof%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fblob%2Fmain%2Ffiles%2Fen-
us%2Fweb%2Fjavascript%2Freference%2Fglobal_objects%2Farray%2Fof%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fcommit%2Fe01fd6206ce2fad2fe09a485bb2d3ceda53a62de%0A*+Document+last+modified%3A+2023-09-07T01%3A45%3A56.000Z%0A%0A%3C%2Fdetails%3E
"This will take you to GitHub to file a new issue.")

[ MDN logo  ](/)

Your blueprint for a better internet.

  * [ MDN on Mastodon  ](https://mozilla.social/@mdn)
  * [ MDN on X (formerly Twitter)  ](https://twitter.com/mozdevnet)
  * [ MDN on GitHub  ](https://github.com/mdn/)
  * [ MDN Blog RSS Feed  ](/en-US/blog/rss.xml)

##  MDN

  * [ About ](/en-US/about)
  * [ Blog ](/en-US/blog/)
  * [ Careers ](https://www.mozilla.org/en-US/careers/listings/?team=ProdOps)
  * [ Advertise with us ](/en-US/advertising)

##  Support

  * [ Product help ](https://support.mozilla.org/products/mdn-plus)
  * [ Report an issue ](/en-US/docs/MDN/Community/Issues)

##  Our communities

  * [ MDN Community ](/en-US/community)
  * [ MDN Forum ](https://discourse.mozilla.org/c/mdn/236)
  * [ MDN Chat ](/discord)

##  Developers

  * [ Web Technologies ](/en-US/docs/Web)
  * [ Learn Web Development ](/en-US/docs/Learn)
  * [ MDN Plus ](/en-US/plus)
  * [ Hacks Blog ](https://hacks.mozilla.org/)

[ Mozilla logo  ](https://www.mozilla.org/)

  * [ Website Privacy Notice ](https://www.mozilla.org/privacy/websites/)
  * [ Cookies ](https://www.mozilla.org/privacy/websites/#cookies)
  * [ Legal ](https://www.mozilla.org/about/legal/terms/mozilla)
  * [ Community Participation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)

Visit  [ Mozilla Corporationâs ](https://www.mozilla.org) not-for-profit
parent, the  [ Mozilla Foundation ](https://foundation.mozilla.org/) .  
Portions of this content are Â©1998â  2024  by individual mozilla.org
contributors. Content available under  [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .

  *[
                
                 Non-standard
                
               ]: Non-standard. Check cross-browser support before using.
  *[
                
                 Deprecated
                
               ]: Deprecated. Not for use in new websites.
[ HTML Examples ](/html/html_examples.asp)
[ CSS Examples ](/css/css_examples.asp)
[ JavaScript Examples ](/js/js_examples.asp)
[ How To Examples ](/howto/default.asp)
[ SQL Examples ](/sql/sql_examples.asp)
[ Python Examples ](/python/python_examples.asp)
[ W3.CSS Examples ](/w3css/w3css_examples.asp)
[ Bootstrap Examples ](/bootstrap/bootstrap_examples.asp)
[ PHP Examples ](/php/php_examples.asp)
[ Java Examples ](/java/java_examples.asp)
[ XML Examples ](/xml/xml_examples.asp)
[ jQuery Examples ](/jquery/jquery_examples.asp)
[ HTML Reference ](/tags/default.asp)
[ CSS Reference ](/cssref/index.php)
[ JavaScript Reference ](/jsref/default.asp)
[ SQL Reference ](/sql/sql_ref_keywords.asp)
[ Python Reference ](/python/python_reference.asp)
[ W3.CSS Reference ](/w3css/w3css_references.asp)
[ Bootstrap Reference ](/bootstrap/bootstrap_ref_all_classes.asp)
[ PHP Reference ](/php/php_ref_overview.asp)
[ HTML Colors ](/colors/colors_names.asp)
[ Java Reference ](/java/java_ref_keywords.asp)
[ Angular Reference ](/angular/angular_ref_directives.asp)
[ jQuery Reference ](/jquery/jquery_ref_overview.asp)
(/en/actions/learn-github-actions/contexts#needs-context) , [ ` strategy `
](/en/actions/learn-github-actions/contexts#strategy-context) , and [ ` matrix
` ](/en/actions/learn-github-actions/contexts#matrix-context) . For more
information about expressions, see " [ Expressions ](/en/actions/learn-github-
actions/expressions) ."

###  Example: Using an expression as environment name

    
    
    environment:
      name: ${{ github.ref_name }}
    

##  Help and support

###  Did this doc help you?

Yes  No

[ Privacy policy ](/en/site-policy/privacy-policies/github-privacy-statement)

###  Help us make these docs great!

All GitHub docs are open source. See something that's wrong or unclear? Submit
a pull request.

[ Make a contribution
](https://github.com/github/docs/blob/main/content/actions/using-jobs/using-
environments-for-jobs.md)

[ Learn how to contribute ](/contributing)

###  Still need help?

[ Ask the GitHub community ](https://github.com/orgs/community/discussions)

[ Contact support ](https://support.github.com)

##  Legal

  * ©  2024  GitHub, Inc. 
  * [ Terms ](/en/site-policy/github-terms/github-terms-of-service)
  * [ Privacy ](/en/site-policy/privacy-policies/github-privacy-statement)
  * [ Status ](https://www.githubstatus.com/)
  * [ Pricing ](https://github.com/pricing)
  * [ Expert services ](https://services.github.com)
  * [ Blog ](https://github.blog)
* General category names from the [ starter-workflows ](https://github.com/actions/starter-workflows/blob/main/README.md#categories) repository. 
       * Linguist languages from the list in the [ linguist ](https://github.com/github-linguist/linguist/blob/master/lib/linguist/languages.yml) repository. 
       * Supported tech stacks from the list in the [ starter-workflows ](https://github.com/github-starter-workflows/repo-analysis-partner/blob/main/tech_stacks.yml) repository. 
     * ` filePatterns ` \- **Optional.** Allows the workflow to be used if the user's repository has a file in its root directory that matches a defined regular expression. 

To add another starter workflow, add your files to the same ` workflow-
templates ` directory.

##  Next steps

To continue learning about GitHub Actions, see " [ Using starter workflows
](/en/actions/learn-github-actions/using-starter-workflows) ."

##  Help and support

###  Did this doc help you?

Yes  No

[ Privacy policy ](/en/site-policy/privacy-policies/github-privacy-statement)

###  Help us make these docs great!

All GitHub docs are open source. See something that's wrong or unclear? Submit
a pull request.

[ Make a contribution
](https://github.com/github/docs/blob/main/content/actions/using-
workflows/creating-starter-workflows-for-your-organization.md)

[ Learn how to contribute ](/contributing)

###  Still need help?

[ Ask the GitHub community ](https://github.com/orgs/community/discussions)

[ Contact support ](https://support.github.com)

##  Legal

  * ©  2024  GitHub, Inc. 
  * [ Terms ](/en/site-policy/github-terms/github-terms-of-service)
  * [ Privacy ](/en/site-policy/privacy-policies/github-privacy-statement)
  * [ Status ](https://www.githubstatus.com/)
  * [ Pricing ](https://github.com/pricing)
  * [ Expert services ](https://services.github.com)
  * [ Blog ](https://github.blog)
en/actions/using-workflows/reusing-workflows#calling-a-reusable-workflow)
."

When you re-run a workflow that uses a reusable workflow and the reference is
not a SHA, there are some behaviors to be aware of:

  * Re-running all jobs in a workflow will use the reusable workflow from the specified reference. For more information about re-running all jobs in a workflow, see " [ Re-running workflows and jobs ](/en/actions/managing-workflow-runs/re-running-workflows-and-jobs#re-running-all-the-jobs-in-a-workflow) ." 
  * Re-running failed jobs or a specific job in a workflow will use the reusable workflow from the same commit SHA of the first attempt. For more information about re-running failed jobs in a workflow, see " [ Re-running workflows and jobs ](/en/actions/managing-workflow-runs/re-running-workflows-and-jobs#re-running-failed-jobs-in-a-workflow) ." For more information about re-running a specific job in a workflow, see " [ Re-running workflows and jobs ](/en/actions/managing-workflow-runs/re-running-workflows-and-jobs#re-running-a-specific-job-in-a-workflow) ." 

##  Next steps

To continue learning about GitHub Actions, see " [ Events that trigger
workflows ](/en/actions/using-workflows/events-that-trigger-workflows) ."

##  Help and support

###  Did this doc help you?

Yes  No

[ Privacy policy ](/en/site-policy/privacy-policies/github-privacy-statement)

###  Help us make these docs great!

All GitHub docs are open source. See something that's wrong or unclear? Submit
a pull request.

[ Make a contribution
](https://github.com/github/docs/blob/main/content/actions/using-
workflows/reusing-workflows.md)

[ Learn how to contribute ](/contributing)

###  Still need help?

[ Ask the GitHub community ](https://github.com/orgs/community/discussions)

[ Contact support ](https://support.github.com)

##  Legal

  * ©  2024  GitHub, Inc. 
  * [ Terms ](/en/site-policy/github-terms/github-terms-of-service)
  * [ Privacy ](/en/site-policy/privacy-policies/github-privacy-statement)
  * [ Status ](https://www.githubstatus.com/)
  * [ Pricing ](https://github.com/pricing)
  * [ Expert services ](https://services.github.com)
  * [ Blog ](https://github.blog)
with:
              name: homework_pre
              path: math-homework.txt
    
      job_2:
        name: Multiply by 9
        needs: job_1
        runs-on: windows-latest
        steps:
          - name: Download math result for job 1
            uses: actions/download-artifact@v4
            with:
              name: homework_pre
          - shell: bash
            run: |
              value=`cat math-homework.txt`
              expr $value \* 9 > math-homework.txt
          - name: Upload math result for job 2
            uses: actions/upload-artifact@v4
            with:
              name: homework_final
              path: math-homework.txt
    
      job_3:
        name: Display results
        needs: job_2
        runs-on: macOS-latest
        steps:
          - name: Download math result for job 2
            uses: actions/download-artifact@v4
            with:
              name: homework_final
          - name: Print the final result
            shell: bash
            run: |
              value=`cat math-homework.txt`
              echo The result is $value
    

The workflow run will archive any artifacts that it generated. For more
information on downloading archived artifacts, see " [ Downloading workflow
artifacts ](/en/actions/managing-workflow-runs/downloading-workflow-artifacts)
."

##  Further reading

  * " [ Managing billing for GitHub Actions ](/en/billing/managing-billing-for-github-actions) ". 

##  Help and support

###  Did this doc help you?

Yes  No

[ Privacy policy ](/en/site-policy/privacy-policies/github-privacy-statement)

###  Help us make these docs great!

All GitHub docs are open source. See something that's wrong or unclear? Submit
a pull request.

[ Make a contribution
](https://github.com/github/docs/blob/main/content/actions/using-
workflows/storing-workflow-data-as-artifacts.md)

[ Learn how to contribute ](/contributing)

###  Still need help?

[ Ask the GitHub community ](https://github.com/orgs/community/discussions)

[ Contact support ](https://support.github.com)

##  Legal

  * ©  2024  GitHub, Inc. 
  * [ Terms ](/en/site-policy/github-terms/github-terms-of-service)
  * [ Privacy ](/en/site-policy/privacy-policies/github-privacy-statement)
  * [ Status ](https://www.githubstatus.com/)
  * [ Pricing ](https://github.com/pricing)
  * [ Expert services ](https://services.github.com)
  * [ Blog ](https://github.blog)
Skip to main content

__ Back to top

__ ` Ctrl ` \+ ` K `

[ ![Astropy v6.0.1 - Home](../_static/astropy_banner_96.png) ](../index.html)

  * [ Getting Started ](../index_getting_started.html)
  * [ User Guide ](../index_user_docs.html)
  * [ Development ](../index_dev.html)
  * [ Project Details ](../index_project_details.html)
  * [ Tutorials ](https://learn.astropy.org/)

  * [ __ GitHub  ](https://github.com/astropy/astropy "GitHub")

  * [ Getting Started ](../index_getting_started.html)
  * [ User Guide ](../index_user_docs.html)
  * [ Development ](../index_dev.html)
  * [ Project Details ](../index_project_details.html)
  * [ Tutorials ](https://learn.astropy.org/)

  * [ __ GitHub  ](https://github.com/astropy/astropy "GitHub")

Section Navigation

Data structures and transformations

  * [ Constants ( ` astropy.constants  ` ) ](../constants/index.html)
  * [ Units and Quantities ( ` astropy.units  ` ) ](../units/index.html)
  * [ N-Dimensional Datasets ( ` astropy.nddata  ` ) ](../nddata/index.html)
  * [ Data Tables ( ` astropy.table  ` ) ](../table/index.html)
  * [ Time and Dates ( ` astropy.time  ` ) ](../time/index.html) __
    * [ Reference/API ](../time/ref_api.html)
  * [ Time Series ( ` astropy.timeseries  ` ) ](../timeseries/index.html)
  * [ Astronomical Coordinate Systems ( ` astropy.coordinates  ` ) ](../coordinates/index.html)
  * [ World Coordinate System ( ` astropy.wcs  ` ) ](../wcs/index.html)
  * [ Models and Fitting ( ` astropy.modeling  ` ) ](../modeling/index.html)
  * [ Uncertainties and Distributions ( ` astropy.uncertainty  ` ) ](../uncertainty/index.html)

Files, I/O, and Communication

  * [ Unified File Read/Write Interface ](../io/unified.html)
  * [ FITS File Handling ( ` astropy.io.fits  ` ) ](../io/fits/index.html)
  * [ ASCII Tables ( ` astropy.io.ascii  ` ) ](../io/ascii/index.html)
  * [ VOTable XML Handling ( ` astropy.io.votable  ` ) ](../io/votable/index.html)
  * [ Miscellaneous: HDF5, YAML, Parquet, pickle ( ` astropy.io.misc  ` ) ](../io/misc.html)
  * [ SAMP (Simple Application Messaging Protocol) ( ` astropy.samp  ` ) ](../samp/index.html)

Computations and utilities

  * [ Cosmological Calculations ( ` astropy.cosmology  ` ) ](../cosmology/index.html)
  * [ Convolution and Filtering ( ` astropy.convolution  ` ) ](../convolution/index.html)
  * [ IERS data access ( ` astropy.utils.iers  ` ) ](../utils/iers.html)
  * [ Data Visualization ( ` astropy.visualization  ` ) ](../visualization/index.html)
  * [ Astrostatistics Tools ( ` astropy.stats  ` ) ](../stats/index.html)

Nuts and bolts

  * [ Configuration System ( ` astropy.config  ` ) ](../config/index.html)
  * [ I/O Registry ( ` astropy.io.registry  ` ) ](../io/registry.html)
  * [ Logging system ](../logging.html)
  * [ Python warnings system ](../warnings.html)
  * [ Astropy Core Package Utilities ( ` astropy.utils  ` ) ](../utils/index.html)
  * [ Astropy Glossary ](../glossary.html)

  * [ __ ](../index.html)
  * [ User Guide ](../index_user_docs.html)
  * __
  * [ Reference/API ](../time/ref_api.html)
  * Time
0/04/)
  * [ June 2019 ](https://blog.peterlamut.com/2019/06/)
  * [ February 2019 ](https://blog.peterlamut.com/2019/02/)
  * [ November 2018 ](https://blog.peterlamut.com/2018/11/)
  * [ May 2018 ](https://blog.peterlamut.com/2018/05/)
  * [ February 2018 ](https://blog.peterlamut.com/2018/02/)
  * [ December 2017 ](https://blog.peterlamut.com/2017/12/)
  * [ November 2017 ](https://blog.peterlamut.com/2017/11/)
  * [ October 2017 ](https://blog.peterlamut.com/2017/10/)
  * [ September 2017 ](https://blog.peterlamut.com/2017/09/)

  * [ Home ](/)

  * [ Twitter  ](https://twitter.com/plamut "Twitter: @plamut")
  * [ GitHub  ](https://github.com/plamut "GitHub: plamut")
  * [ StackOverflow  ](https://stackoverflow.com/users/5040035/plamut "StackOverflow profile")
  * [ LinkedIn  ](https://si.linkedin.com/in/peterlamut "LinkedIn profile")

[ Peter Lamut's blog ](https://blog.peterlamut.com/) [ Create a website or
blog at WordPress.com  ](https://wordpress.com/?ref=footer_custom_svg "Create
a website or blog at WordPress.com")

  * [ Comment  ](https://blog.peterlamut.com/2020/04/01/distinguishing-between-none-and-missing-values-in-dictionaries-with-a-sentinel/#respond)
  * [ Reblog  ]()
  * [ Subscribe  ]() [ Subscribed  ]()

    * [ ![](https://blog.peterlamut.com/wp-content/uploads/2018/08/plamut_icon.png?w=50) Peter Lamut's blog ](https://blog.peterlamut.com)

Sign me up

    * Already have a WordPress.com account? [ Log in now. ](https://wordpress.com/log-in?redirect_to=https%3A%2F%2Fr-login.wordpress.com%2Fremote-login.php%3Faction%3Dlink%26back%3Dhttps%253A%252F%252Fblog.peterlamut.com%252F2020%252F04%252F01%252Fdistinguishing-between-none-and-missing-values-in-dictionaries-with-a-sentinel%252F)

  *     * [ ![](https://blog.peterlamut.com/wp-content/uploads/2018/08/plamut_icon.png?w=50) Peter Lamut's blog ](https://blog.peterlamut.com)
    * [ Customize  ](https://peterlamut.wordpress.com/wp-admin/customize.php?url=https%3A%2F%2Fpeterlamut.wordpress.com%2F2020%2F04%2F01%2Fdistinguishing-between-none-and-missing-values-in-dictionaries-with-a-sentinel%2F)
    * [ Subscribe  ]() [ Subscribed  ]()
    * [ Sign up ](https://wordpress.com/start/)
    * [ Log in ](https://wordpress.com/log-in?redirect_to=https%3A%2F%2Fr-login.wordpress.com%2Fremote-login.php%3Faction%3Dlink%26back%3Dhttps%253A%252F%252Fblog.peterlamut.com%252F2020%252F04%252F01%252Fdistinguishing-between-none-and-missing-values-in-dictionaries-with-a-sentinel%252F)
    * [ Copy shortlink ](https://wp.me/p9daTi-82)
    * [ Report this content ](https://wordpress.com/abuse/?report_url=https://blog.peterlamut.com/2020/04/01/distinguishing-between-none-and-missing-values-in-dictionaries-with-a-sentinel/)
    * [ View post in Reader ](https://wordpress.com/read/blogs/136127156/posts/498)
    * [ Manage subscriptions ](https://subscribe.wordpress.com/)
    * [ Collapse this bar ]()

%d

![](https://pixel.wp.com/b.gif?v=noscript)