Start of a symbol/operator glossary

[muttoni]

Partly addresses #959

Description

I've been going through the Cadence reference documentation and started collating information about all the symbols and operators. While it doesn't completely satisfy the need for a comprehensive glossary mentioned in #959, it can perhaps be a step in that direction and help developers who are learning Cadence to quickly look up the various symbols (something that is hard to do in the documentation Algolia search bar. For example as? does not return any useful result).

I've created a new file called glossary.md

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• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[turbolent]

Nice! Thank you for writing this up 👍

[codecov-commenter]

Codecov Report

Merging #1279 (104967c) into master (38dd571) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1279      +/-   ##
==========================================
+ Coverage   77.32%   77.34%   +0.02%     
==========================================
  Files         274      275       +1     
  Lines       35372    35450      +78     
==========================================
+ Hits        27350    27418      +68     
- Misses       6943     6949       +6     
- Partials     1079     1083       +4     

Flag	Coverage Δ
unittests	77.34% <ø> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
runtime/sema/check_cast_visitor.go	84.84% <0.00%> (ø)
runtime/sema/checker.go	89.64% <0.00%> (+0.02%)	⬆️
runtime/sema/check_casting_expression.go	96.73% <0.00%> (+0.16%)	⬆️

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[turbolent]

@muttoni any update here?

[muttoni]

@turbolent sorry, did not get any notifications on this (fixed the settings now). Committed all changes, thanks for the suggestions! Let me know if there's anything else I can improve! :)

[turbolent]

Thank you! Next step is to add this to https://github.com/onflow/flow/blob/0d2288e3d0f248929a85aad7eb25ce59306132cc/docs/gatsby-config.js#L617 so it shows up in the sidebar of the documentation page