LangChain - Chains and LCEL
How do you correctly combine two string variables
city and country with a comma and space in LCEL?How do you correctly combine two string variables city and country with a comma and space in LCEL?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand string concatenation in LCEL
LCEL uses the+operator to concatenate strings.Step 2: Combine variables with literal string
To add a comma and space betweencityandcountry, include it as a string: ', '.Final Answer:
city + ', ' + country -> Option DQuick Check:
Check if+is used for concatenation and literals are quoted [OK]
Quick Trick: Use + operator for string concatenation in LCEL [OK]
Common Mistakes:
- Using functions like concat() which LCEL does not support
- Using & or . operators which are not valid in LCEL
- Not quoting the comma and space as a string
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