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bfs

Nutty Narwhal answered on October 31, 2021 Popularity 1/10 Helpfulness 1/10

answer bfs

related parse error: syntax error, unexpected string content "", expecting "-" or identifier or variable or number

bfs

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1  procedure BFS(G, root) is
 2      let Q be a queue
 3      label root as explored
 4      Q.enqueue(root)
 5      while Q is not empty do
 6          v := Q.dequeue()
 7          if v is the goal then
 8              return v
 9          for all edges from v to w in G.adjacentEdges(v) do
10              if w is not labeled as explored then
11                  label w as explored
12                  Q.enqueue(w)

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Contributed on Oct 31 2021

Nutty Narwhal

0 Answers Avg Quality 2/10

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parse error: syntax error, unexpected string content "", expecting "-" or identifier or variable or number

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The error message "parse error: syntax error, unexpected string content '', expecting '-' or identifier or variable or number" typically occurs in YAML when the parser encounters an unexpected string while parsing the file. This often indicates a problem with the structure of your YAML document, such as incorrect indentation or an invalid format.

Common Causes and Solutions
Incorrect Indentation: YAML is sensitive to indentation. Ensure that your indentation is consistent (using spaces, not tabs) and correctly aligns with the hierarchy of your data structure.

Example of Incorrect Indentation:

yaml
Copy code
steps:
  - script: echo "Step 1"
    script: echo "Step 2"  # Incorrect indentation
Corrected Example:

yaml
Copy code
steps:
  - script: echo "Step 1"
  - script: echo "Step 2"  # Correctly aligned
Missing Key: Ensure that all keys are properly defined. If you have a string without a preceding key, it will cause a parse error.

Example:

yaml
Copy code
- "This is a string without a key"  # This will cause an error
Corrected Example:

yaml
Copy code
my_strings:
  - "This is a valid string"  # Added a key
Special Characters: If you are using special characters in strings, ensure they are correctly formatted or enclosed in quotes.

Example:

yaml
Copy code
key: "Value with special character: @"
Missing or Extra Characters: Look for any missing colons or commas or any extra characters that may cause confusion in the structure.

Debugging Steps
Use a YAML Validator: Tools like online YAML validators can help you quickly identify syntax errors and suggest corrections.
Check for Quotes: Ensure that quotes around strings are correctly opened and closed.
Simplify Your YAML: If you're unsure where the error lies, try simplifying your YAML file by removing sections until the error disappears, then gradually reintroduce them.
By carefully checking your YAML structure and following these guidelines, you should be able to resolve the parse error and ensure your YAML file is correctly formatted. If you continue to face issues, feel free to share your YAML snippet for more specific guidance!

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Source: myassignmenthelp.com

Tags: identifier whatever what

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Contributed on Oct 23 2024

Agreeable Ant

0 Answers Avg Quality 2/10

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parse error: syntax error, unexpected string content "", expecting "-" or identifier or variable or number

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