# How about new feature of \`:auto\` symbol of \`DataFrame\`?

**URL:** <https://discourse.julialang.org/t/how-about-new-feature-of-auto-symbol-of-dataframe/72271>\
**Category:** Data\
**Created:** [November 30, 2021, 5:15am UTC](https://discourse.julialang.org/t/how-about-new-feature-of-auto-symbol-of-dataframe/72271 "2021-11-30T05:15:49Z")\
**Posts on this page:** 1\
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**Author:** ![gustaphe](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/gustaphe/32/18174_2.png) [@gustaphe](https://discourse.julialang.org/u/gustaphe)\
**Post date:** [November 30, 2021, 6:28am UTC](https://discourse.julialang.org/t/how-about-new-feature-of-auto-symbol-of-dataframe/72271/3 "2021-11-30T06:28:49Z")

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Functions don’t have access to the names of input variables. There _could_ be a macro to do this, though.

(The reason nilshg’s suggestion works is that `(; x )` is interpreted as `(; x=x )`, so the tuple stores the variable name)

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