• Perroboc@lemmy.world
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    1 year ago

    int unused_variable = 0;

    Dude wtf is your problem don’t just leave things lying about there don’t you know how to code I mean what the- I don’t go to your house and leave shit on the floor and just—

    int _unused_variable = 0;

    Ok. We cool.

    • lseif@sopuli.xyz
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      11 months ago

      sometimes you need an unused variable. some uses in rust:

      // destructuring
      let (width, _height) = get_dimensions();
      
      // trait implementations (i couldnt think of a better example for this)
      impl Into for AlwaysZero {
          fn into(_value: Self) -> {
              return 0;
          }
      }
      
      // some types (eg. Result) must be 'used'
      // assigned to a variable if we dont care about the return value
      let _ = returns_result("foo");