foo.cc: In lambda function:
foo.cc:14:23: error: expected '{' before ')' token
   14 |                 if([i])
      |                       ^
foo.cc: In function 'int main()':
foo.cc:14:20: error: could not convert '<lambda closure object>main()::<lambda()>{i}' from 'main()::<lambda()>' to 'bool'
   14 |                 if([i])
      |                    ^~~
      |                    |
      |                    main()::<lambda()>

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