LangChain - Chains and LCEL
Given the LCEL expression
input + ' world' where input is 'Hello', what is the output?Given the LCEL expression input + ' world' where input is 'Hello', what is the output?
medium📝 component behavior Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the expression
The expression adds the string ' world' to the variable input which holds 'Hello'.Step 2: Perform string concatenation
Concatenating 'Hello' + ' world' results in 'Hello world'.Final Answer:
'Hello world' -> Option CQuick Check:
String concat = 'Hello world' [OK]
Quick Trick: Adding strings concatenates them in LCEL [OK]
Common Mistakes:
- Treating + as a literal character
- Expecting variable name output instead of value
- Assuming syntax error on string addition
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