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D'oh! Working with React and wondered why my UI was partial:
render () {
return (
<A prop={value} />,
<B prop={value} />
)
}
Reminded me how cool the comma operator is in JavaScript:
return Expr, …, Expr
Evaluates each expression, but returns result of last.
render () {
return (
<A prop={value} />,
<B prop={value} />
)
}
Reminded me how cool the comma operator is in JavaScript:
return Expr, …, Expr
Evaluates each expression, but returns result of last.
Ti be more clear, the return statement returns the result of the Expression (if any) to its right. Expressions can contain Expressions. So each of the expressions in a list are evaluated, but only the result of the final is returned.
I think I first read about this little detail in one of @rauschma's fantastic deep-dive posts, but I'm not sure which one.
