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Q&A Tips in golfing using Lua

Remove print's parentheses when it's a single string print strangely works without parentheses, however, it only applies to single strings. In other words, it can't do the same for other variables...

posted 2y ago by General Sebast1an‭  ·  edited 2y ago by General Sebast1an‭

Answer
#2: Post edited by user avatar General Sebast1an‭ · 2021-09-06T06:22:19Z (over 2 years ago)
  • # Remove `print`'s parentheses when it's a single string
  • `print` strangely works without parentheses, however, it only applies to single strings. In other words, it can't do the same for other variables or string concatenation inside the function.
  • For example:
  • ```lua
  • print("Hello, World!")
  • ```
  • Works, but can be shortened to:
  • ```lua
  • print"Hello, World!"
  • ```
  • Saving 2 bytes for all cases.
  • [Try it online!](https://tio.run/##yylN/P@/oCgzr0TJIzUnJ19HITy/KCdFUen/fwA "Lua – Try It Online")
  • These don't work:
  • ```lua
  • i=10
  • print i
  • ```
  • [Try it online!](https://tio.run/##yylN/P8/09bQgKugKDOvRCHz/38A "Lua – Try It Online")
  • ```lua
  • name="Mark"
  • print"Hello, "..name.."."
  • ```
  • [Try it online!](https://tio.run/##yylN/P8/LzE31VbJN7EoW4mroCgzr0TJIzUnJ19HQUlPDySnp6ekp/T/PwA "Lua – Try It Online")
  • # Remove `print`'s parentheses when it's a single string
  • `print` strangely works without parentheses, however, it only applies to single strings. In other words, it can't do the same for other variables or string concatenation inside the function.
  • For example:
  • ```lua
  • print("Hello, World!")
  • ```
  • Works, but can be shortened to:
  • ```lua
  • print"Hello, World!"
  • ```
  • Saving 2 bytes for all cases.
  • [Try it online!](https://tio.run/##yylN/P@/oCgzr0TJIzUnJ19HITy/KCdFUen/fwA "Lua – Try It Online")
  • These don't work:
  • ```lua
  • i=10
  • print i
  • ```
  • [Try it online!](https://tio.run/##yylN/P8/09bQgKugKDOvRCHz/38A "Lua – Try It Online")
  • ```lua
  • name="Mark"
  • print"Hello, "..name.."."
  • ```
  • [Try it online!](https://tio.run/##yylN/P8/LzE31VbJN7EoW4mroCgzr0TJIzUnJ19HQUlPDySnp6ekp/T/PwA "Lua – Try It Online")
  • You'll need to encase them in parentheses if so.
#1: Initial revision by user avatar General Sebast1an‭ · 2021-09-06T00:36:27Z (over 2 years ago)
# Remove `print`'s parentheses when it's a single string

`print` strangely works without parentheses, however, it only applies to single strings. In other words, it can't do the same for other variables or string concatenation inside the function.

For example:
```lua
print("Hello, World!")
```

Works, but can be shortened to:
```lua
print"Hello, World!"
```

Saving 2 bytes for all cases.

[Try it online!](https://tio.run/##yylN/P@/oCgzr0TJIzUnJ19HITy/KCdFUen/fwA "Lua – Try It Online")

These don't work:
```lua
i=10
print i
```

[Try it online!](https://tio.run/##yylN/P8/09bQgKugKDOvRCHz/38A "Lua – Try It Online")

```lua
name="Mark"
print"Hello, "..name.."."
```

[Try it online!](https://tio.run/##yylN/P8/LzE31VbJN7EoW4mroCgzr0TJIzUnJ19HQUlPDySnp6ekp/T/PwA "Lua – Try It Online")