checkStringWithoutSpace static method
This function checks if the given text is not null, not empty, and does not contain spaces. Returns the text if it meets the conditions, otherwise returns null. Example: checkStringWithoutSpace("Hello World") returns null.
Implementation
static String? checkStringWithoutSpace(String? text) {
if (text == null || text.trim().isEmpty || text.contains(' ')) {
return null;
}
return text;
}