CODEWITHSUNDEEP
parsinggo
smehnawal
smehnawal

Reputation: 582

How to extract(parse) integers from a continuous string in Go Lang

I have very large(potentially endless) stream of integers similar to input below.

I intend to randomly access this slice and read from string one character at a time, and would like to access the integer represented by the character.

For the code below I was expecting intVal to be an integer value of 3. number[1] gives me the ASCII code for 3 which is 51.

input := "2345892345234502349502345234534234572304520345902384523045"
intVal,_ := strconv.Atoi(input[1])

Essentially, What is the proper way of reading integers from strings in Go ?

Upvotes: 0

Views: 1803

Answers (2)

Thundercat
Thundercat

Reputation: 120941

Use the following code to get the numeric value of the decimal number at input[i]:

b := input[i]
if b < '0' || b > '9' {
    // not a decimal number
    ... handle error here
}
n := int(b) - '0'

Upvotes: 1

Burak Serdar
Burak Serdar

Reputation: 51567

You can read one rune at a time and convert to string:

for _,r:=range input {
   str:=string(r)
}

Or access randomly:

str:=input[n:n+1]

Upvotes: 0

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