The whole idea of expressions is very nice, and I can't imagine using ternary expressions anywhere after learning Rust.
Also implicit returns ❤️
this post was submitted on 08 Jul 2023
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I never got to like implicit anything.
Not even returns. Ever.
Doing everything explicitly can get to be annoying, especially when it comes to what you had to do before without Vulkan's VK_EXT_shader_object.
It's clear that some stuff should be implicit - most types in programming languages, for example; needing to specify a struct type and then the struct itself can be annoying - and other stuff explicit, like low level operations.
Returns are something that usually fall into that "implicit" category. Why should I do let a = function(); return a; when I can just do function()? It's shorter, simpler, and I don't waste keystrokes.
Having some experience with both Python and JS/TS, I don't have much preference about ternaries or expressions. Although I always break lines for ternary statements.
const testStuff = condition ?
outcome(1) :
outcome(2);
Having everything on the same line ruins readability for me.
The if-else expression that Python has is quite different from (and significantly worse than) what people mean with if-else as an expression.
So, this is Python:
volume = 100 if user_is_deaf else 50
These are two examples of if-else as an expression (Rust and Scala):
let volume = if user_is_deaf { 100 } else { 50 };
val volume = if (user_is_deaf) 100 else 50
Crucially, these look essentially equivalent to normal if-else-statements in these languages.
personally I prefer
const testStuff = condition
? outcome(1)
: outcome(2);
For a long time I hated ternaries, partially due to my experience with them in PHP (Who thought left-associative ternaries was a good idea? seriously?).
OpenSCAD made me love them again. It's purely functional so you're encouraged to use nested ternaries.
and then you have lua
local result = condition and a or b
I'm not complaining, although it gets a little confusing when one of the results is falsey. Which is a rarity since only false and nil are falsey in lua.
It's amazing what people have made in Roblox with that language.
Still less intuitive than Kotlin's if expressions.
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