Code RoomNull pointer dereference in map

MediumPrep Room Coding #1910

Null pointer dereference in map

Code reviewCode quality & reviewMid–Senior~15 min

Review this Go rate-limit counter increment.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 15 min

Mark a line and say what kind of problem it is.0 findings

1type Limiter struct {

2 counts map[string]*int

3}

4

5func (l *Limiter) Hit(key string) int {

6 c := l.counts[key]

7 *c++

8 return *c

9}

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