STRING::ISPRINT 1g 2024-04-14 laplante@plcb.ca GOWEB/STRING — Check for Printable Characters

title: “STRING::ISPRINT” version: “1.0.0” date: 2024-04-14 author: “laplante@plcb.ca” section: “1g”

category: “GOWEB/STRING”

Name

string::isprint Check for Printable Characters

Synopsis

string::isprint(string[, error: variable, string...])
isprint(string[, error: variable, string...])

Description

The isprint function checks whether the provided string contains only printable characters.

According to the Unicode standard, a character is considered printable if it falls within one of the following categories:

• Alphabetic characters — letters from various scripts (Latin, Cyrillic, Greek, etc.)
• Numeric characters — numerals from various scripts (Arabic numerals, Chinese numerals, etc.)
• Punctuation characters — commas, periods, semicolons, etc.
• Symbol characters — currency symbols, math symbols, arrows, etc.
• Whitespace characters — spaces, tabs, newlines, etc.
• Other graphical characters — emoji, dingbats, box drawing characters, etc.

Examples

res={{
    isprint("a"); "\n";
    isprint(" "); "\n";
    isprint("1"); "\n";
    isprint("\t"); "\n";
    isprint("\n"); "\n";
    isprint("abc"); "\n";
    isprint("abcéèç"); "\n";
    isprint("☺"); "\n";
}}.

Returns:

res=true
true
true
false
false
true
true
true

Author

laplante@plcb.ca

See Also

• string::isgraph
  
• String functions
  
• Index
  

Version

• 1.0.0 — 2024-04-14 — Initial version