On Thursday, 14 February 2013 at 20:01:37 UTC, Jacob Carlborg
wrote:
On 2013-02-14 13:42, Andrei Alexandrescu wrote:
I understand. Adding functions such as the negation of empty
becomes a
judgment call.
Phobos does have quite a few simple functions that could be
easily
achieved through expression composition (e.g. trim) or
statement
composition (e.g. enforce). So again it's all a matter of
judgment.
Walter and I don't consider the negation of empty as useful
enough to
receive a name.
How about this, I have another similar function that might be
useful in Phobos as well.
"isBlank" and "isPresent". "isPresent" is just the opposite of
"isBlank".
"isBlank" works like this:
* If it's a string - it's considered blank if it's empty or
only contains white space
* If you can call "empty" on it - return the result
* If it's a reference type and it's null - return true
* Otherwise return false
What does isBlank() return with tabs ?
I don't like having two functions doing the same thing, so
isBlank() may be useful, isPresent() only adds cognitive overload
and mere chaos to the code base (because someone is going to use
both at the same time in the same function, making the code
harder to understand).
