Improvement of chapter "Výrazové prostředky" - updated version

[mildabre]

The term 'výrazové prostředky' is correct, but common developer understands the word "syntaktické prvky" better. I also suggest reordering the items + complete missing description about public properties and explicite note the slight syntax difference between constant and property.

I was very confused by that fact, that approx. 3 years ago the syntax for public properties @myservice::publicProperty was not supported and the only supported syntax at that time was funny: @myservice::$publicProperty() so I have it in my services.neon. Another source of confusion is neon plugin of @mesour which suggests public properties with $ on the beginning.

When I tested yesterday the syntax @myservice::publicProperty I made first letter uppercase @myservice::PublicProperty and got exception that constant not exist. I see that the difference in syntax between constant and property is very slight - first letter uppercase/lowercase. I think its goodidea, but I see important point out this slight difference in documentation as well.

The syntax of public properties is also discussed here on forum: https://forum.nette.org/cs/36714-rfc-upravit-matouci-syntaxi-public-property-sluzby-v-services-neon

[dg]

Thanks — there's a genuinely valuable, non-obvious point buried in here, and I've documented it (622dbe5ce, both languages).

Incorporated: the property-vs-constant distinction. I verified it in the DI source (Resolver::convertReferences()): for @service::member, a name matching ^[A-Z]… is resolved as a class constant, otherwise as a public property ('$' . name). So the first-letter case really does decide it — good catch, this wasn't documented. I added a short paragraph plus an example showing @configProvider::apiUrl (property) vs @configProvider::Version (constant), placed right after the constants block.

Not taken, and why:

• The heading rename Výrazové prostředky → Syntaktické prvky: it's an established term, renaming changes the anchor (linked from 3 places) and diverges from the English "Expression means"; I'd rather not rebrand it unilaterally.
• FilesystemIterator::SKIP_DOTS → SkipDots: SKIP_DOTS is the real PHP constant (and already starts uppercase), so I kept it — SkipDots doesn't exist and would be a factual error.
• The larger reordering: the current ordering reads fine, so I kept it to minimize churn.

Closing since the branch can't be merged directly. Really appreciate you flagging the confusing property/constant syntax.