Lexer: Ability to access characters of string by index

[Apple]

Wappler 5.2.3
NodeJS

Can’t access characters of strings by index

First letter of string

Regarding the 1st question, to obtain the first character of a string: Set Value firstLetter = $_POST.some_form_value[0] Don’t know the exact answer to your 2nd question, but you’d probably have to use the Regex validation Edit: Actually, that doesn’t work, you have to do this instead: Set Value firstLetter = $_POST.some_form_value.substr(0, 1)

[Teodor]

Not sure what are you reporting here as a bug, but what exactly do you expect to be returned from this expression?

$_POST.some_form_value[0]

[Apple]

Well, you can access arrays by their index (e.g.: query[0].name), but you can’t do the same for strings. This is the behaviour in Javascript:

In this case, to get the first character. I’m unsure if this is a bug or a deliberate decision during the making of your parser/lexer

[Teodor]

No, you can’t use this for strings. You can access arrays by index.

[Apple]

Moved to feature requests. Same behaviour in PHP