|Related to : Form Error: First argument in form cannot contain nil or be empty|
|error in if() argument is of length zero in R|
To detail a bit my comment and @Adii_ 's :
when you use grep, the result is the "position" of elements that
fulfill the condition... so "nothing" if there is no match (hence the
Using grepl, you'll get TRUE or FALSE, which you can use in your if
As for length(grep(...)), the result will be 0 if there is no match,
corresponding to FALSE for the if statement, or a posit
|error in select(): invalid argument|
Since select() is complaining about a bad parameter, and you are
passing only two parameters to it, that means either fd_max is invalid
or readFd is invalid. The documentation states:
nfds is negative or the value contained within timeout is invalid.
Since you are not using the timeout parameter, look at your fd_max
variable, make sure you are not overflowing it.
Aside from that,
|Extra argument in call error - Swift|
orderByDescending expects a string, whereas you are providing
AnyObject!. Note that you don't have to declare a variable as
implicitly unwrapped if you are supposed to assign a non-nil value.
Just use a normal optional if it can be null, or a non optional
Also, PFObject already exposes a objectId string property, so you
don't have to use the subscript in order to retrieve it:
|I keep getting this angular js error : Argument 'ExampleController' is not a function, got undefined|
what is the output of imports.jsp? you sure it contains
personally it would help to see the html how it looks like when it was
loaded in the browser and not a jsp version of it.
|"non-numeric argument to binary operator" error from getReturns|
It's probably a function name clash issue. Running
gives me the error, but running
How did this happen?
You must have loaded the stockPortfolio package, and then loaded
either timeSeries or another package that depends upon