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Identify the error in this Angular template expression:

medium📝 Debug Q6 of 15
Angular - Pipes
Identify the error in this Angular template expression:
{{ 'Hello World' | uppercase | slice }}
Auppercase pipe cannot be chained
Bslice pipe requires start and end parameters
CMissing pipe separator before slice
DString input is invalid for pipes
Step-by-Step Solution
Solution:
  1. Step 1: Check slice pipe usage

    The slice pipe requires at least a start index parameter to work properly.
  2. Step 2: Identify missing parameters

    In the expression, slice is used without parameters, causing an error.
  3. Final Answer:

    slice pipe requires start and end parameters -> Option B
  4. Quick Check:

    slice pipe needs parameters [OK]
Quick Trick: Always provide parameters to slice pipe [OK]
Common Mistakes:
  • Omitting slice parameters
  • Thinking uppercase pipe cannot chain
  • Misreading pipe separators

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