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Programming-Idioms

# 345 Convert string to big integer
Create the integer value i initialized from its string representation s (in radix 10)

Use an integer type that can hold huge values. Explain what happens if s cannot be parsed.
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Other implementations 
import "math/big"
i := new(big.Int)
_, ok := i.SetString(s, 10)

If s cannot be parsed, then ok will be false

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