WebCommon.incomingExists3kaya
Checks a key exists in user-supplied data
Usage
Bool incomingExists( String key, DataSource ds )
Arguments
key The key to check
ds The source for user-supplied data
Overview
Returns true if the key exists in the data source, and false otherwise.
-
// GET /example.cgi?a=1;b=3;b=5;z=;z;z
val = incomingExists("a",DataGet);
// val = true
val = incomingExists("b",DataGet);
// val = true
val = incomingExists("c",DataGet);
// val = false
val = incomingExists("z",DataGet);
// val = true
This is useful for avoiding Exceptions when using WebCommon.incomingData (3kaya) or WebCommon.incomingValue (3kaya) , or for checking if a checkbox has been selected.
Releases
4 releases since Debian 5.0 (Lenny); the text changed 3 times.