Idiomatically determine all the characters that can be used for symbols: Difference between revisions
Idiomatically determine all the characters that can be used for symbols (view source)
Revision as of 10:41, 2 June 2023
, 1 year agoAdded FreeBasic
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From this code we can see that any characters may be used in an identifier unless it parses as a string or a number.
=={{header|
<syntaxhighlight lang="vb">Dim As String*1 C1
Dim As Integer C
Print "First character set: ";
For C = 0 To 255
If (Chr(C) >= "A" And Chr(C) <="Z") Or Chr(C)="_" Then Print Chr(C);
Next
Print !"\nNext characters set: ";
For C = 0 To 255
C1 = Chr(C)
If (C1 >= "A" And C1 <= "Z") Or (C1 >= "0" And C1 <= "9") Or C1 = "_" Or (C1 >= "a" And C1 <= "z") Then Print C1;
Next C
Sleep</syntaxhighlight>
{{out}}
<pre>First character set: ABCDEFGHIJKLMNOPQRSTUVWXYZ_
Next characters set: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz</pre>
=={{header|Go}}==
This program uses the Go parser to check whether an identifier is indeed valid.
It checks separately which Unicode code points may appear at the beginning of an identifier, or in the remaining name.
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