nwsFindTry {nws} | R Documentation |
Attempt to find value associates with a variable from the shared netWorkSpace;
a non-blocking version of nwsFind
.
## S4 method for signature 'netWorkSpace': nwsFindTry(.Object, xName, defaultVal=NULL)
.Object |
a netWorkSpace class object |
xName |
name of variable to be found |
defaultVal |
value to return if xName is not found |
Look in the shared netWorkSpace for a value bound to xName.
Once found, return the value associated with xName, but
the value is not removed from the shared netWorkSpace.
If there is more than one value associated with xName, the
particular value returned depends on varName's behavior. See
nwsDeclare
for details.
If variable is not found, return immediately rather than block on the
operation (as in the case of nwsFind
), and
the value of argument defaultVal is returned.
By default, defaultVal is NULL.
## Not run: ws <- netWorkSpace('nws example') x <- nwsFindTry(ws, 'abc', -1) ## End(Not run)