toNum method
Converts a String
to a numeric value if possible.
If conversion fails, null
is returned.
Example
String foo = '4';
int fooInt = foo.toNum(); // returns 4;
String foo = '4f';
var fooNull = foo.toNum(); // returns null;
Implementation
num? toNum() {
if (this.isBlank) {
return null;
}
return num.tryParse(this);
}