Icon View Thread

The following is the text of the current message along with any replies.
Messages 1 to 2 of 2 total
Thread Detecting Null
Wed, Feb 13 2013 10:41 AMPermanent Link

Matthew Jones

 MyValue : String;
 MyValue := Window.SessionStorage.GetItem('my_value');

// How can I check if MyValue is null or not?

Right now I read a value and check if it is '1', and if it isn't then I assume my
settings are not initialised, but I'd rather have a better test.

/Matthew Jones/
Thu, Feb 14 2013 12:42 PMPermanent Link

Tim Young [Elevate Software]

Elevate Software, Inc.


Email timyoung@elevatesoft.com


<< // How can I check if MyValue is null or not? >>

Just use this:

if (MyValue=nil) then
  ShowMessage('Value is null');

In EWB, strings, like arrays, can be nil if they haven't been assigned or
their length assigned via SetLength().

If you have any other questions, please let me know.

Tim Young
Elevate Software