Check if a character is in the English alphabet or a number 0 to 9

[potocnik]

Hi, I am using a 16x2 display with arduino and foreign characters don't display correctly I don't want to try to display the characters as I would not gain much except bulk out my code on arduino so I want to stop the characters being sent in my app. So my question is this:
in Delphi we can check to see if a character is in a list using in ['a'..'z'] or in ['A'..'Z'] or in ['0'..'9'] is there another way to do this in ai without making list with a-z plus A-Z plus 0-9 and then checking each item?

[TIMAI2]

There is no built in function to do this, you will need to build the lists and iterate over them.

[potocnik]

ok thanks again

[SteveJG]

Three ways

1. Substitute characters using a Dictionary How can i change format EN numbers to Arabic numbers

2.)

, which is one way to use a List to capture characters with unlauts ä/ö/ü* or an esset ß

3.) Using Lists by comparing. One example: Replace item character in listview

4. probably other ways but as Tim indicated, there is no built in function.

[potocnik]

now that's a good idea I like this thank you

[SteveJG]

This will filter all non English language characters and numerals simply

[potocnik]

thanks again I was just working on this

[potocnik]

just one more thing how to add a space to the list? I have tried the obvious is there an escape character like \n etc?

[SteveJG]

Try

probably require reads true but then esset also reads true.

experiment and you might find a useful combination. The contains any might not be able to differentiate a space.

[potocnik]

again thank you I'll try

[Juan_Antonio]

There are also extensions on Regular Expression:

Regular expression extension

Or JavaScript
w3schools.com/js/js_regexp.asp

[potocnik]

thank you it looks very good I will have a look