I am starting to use Parse and in the documentation it has examples to use the PFObject as an NSDitionary like this:
// Create the post
PFObject *myPost = [PFObject objectWithClassName:#"Post"];
myPost[#"title"] = #"I'm Hungry";
but i am getting a compiler error:
"Expected method to write dictionary element not found on object of type "PFObject"
But if I access the myPost PFObject like this, it works:
[myPost setObject:#"I'm Hungry" forKey:#"title"];
What is the problem?
I though that PFObject could be accesses as a dictionary?
thanks
I would check that you are using the latest version of the Parse SDK. This is new functionality and my guess is you haven't downloaded the SDK since this feature was introduced.
when i try your code at my side it gives me success message. I think you are using old parse library.
Thanks.
Downloading latest XCode should help. Subscript syntax is available from Xcode 4.4+
Related
I'm trying to build CLI. I took an example here
And in Program class author use return await builder.RunCommandLineApplicationAsync<TestCmd>(args);
Like a start point of program, but when i'm trying to do the same i have an error:
How can I solve this issue?
I figured out why, because i thougth that it's from Microsoft.Hosting, but i need to intall this package: McMaster.Extensions.Hosting.CommandLine.
Close please this topic
I receive a compiler error when trying to use firebase FieldValue.increment(1) in iOS using swift. The error only says "Ambiguous use of 'increment'"
I have updated all my pods to the current versions of all firebase pods used. More specifically I am on Firebase(5.20.2) and FirebaseFirestore (1.2.1).
My code (below) is almost exactly the same as the example in the docs Seen at the bottom of this page
How can I fix this error and get the app to compile?
let docRef = db.collection("metadata").document("permanentConversions")
docRef.updateData([
"total": FieldValue.increment(1)
])
As noted in the comments, the "Ambiguous use of 'increment'" error is solved for me by changing the code in the example to
FieldValue.increment(Int64(1)).
The compiler provides an option of double or int64 for the increment operator and I guess it does not know which one to choose.
I built sqlcipher with mingw.
I wanted to access sqlite(DB) encrypted in mfc(C++).
So, sqlite3_open () was applied correctly. but, sqlite3_open() did not return a result, so I wanted to use sqlite3_key().
When using sqlite3_key(), sqlite3_key() is not defined.
How do I use sqlite3_key()? Or how do I activate sqlite3_key() function?
sqlite3_open(...) will return a result code. If you are not receiving SQLITE_OK as a result, you may wish to investigate the error code with sqlite3_errcode(...) Alternatively, you might review your build process to make sure everything is compiling properly.
I am new to objectify, and reading a tutorial on how to query. For some reason when I type the following code:
Query q = ofy().query(UserChoice.class).filter("email", email);
My Eclipse gives me a error saying "The method query(Class) is undefined for the type Objectify"
I'm not sure what this means? I imported Objectify correctly by using the following:
import com.googlecode.objectify.Objectify;
import com.googlecode.objectify.ObjectifyService;
ObjectifyService.register(UserChoice.class);
Objective doesn't have an actual query method. In their API you can see all the calls you can make on the Objectify object, query() isn't one of those.
It looks like there may be an older version of Objectify that has a query method. The newest one (Build version: 4.0a3) doesn't have it, but an older version (Build version: 2.2.1) does. It looks like the class paths are the same, com.googlecode.objectify.Objectify. Make sure to load in the correct one or you are using the proper version with the `query() call.
The ObjectifyService you are using looks to be in the older version (2.2.1).
I am trying to find out the error for two days but still haven't got this unknown reason figure out.
I have configured and compiled Botan library. Everything goes ok but when try to write this sample code to be run..
S2K* s2k = get_s2k("PBKDF2(SHA-256)");
s2k->set_iterations(4049);
SecureVector<byte> key_and_IV = s2k->derive_key(48, passphrase).bits_of();
SymmetricKey key(key_and_IV, 32);
it says error: 'class Botan::PBKDF' has no member named 'set_iterations'
How can I solve this problem ?
The Botan docs for v1.11.1 report that the function get_s2k() has been deprecated, recommending that you use get_pbkdf() instead.
According to the docs, get_sdk(algospec) just returns the result of a call to get_pbkdf(algo_spec) which will give you a pointer to an instance of the class Botan::PBKDF.
First things first then, your code needs to be something more like:
PBKDF *s2k = getpbkdf("PBKDF2(SHA-256)");
Unfortunately without knowing what you want to do with s2k I can't help any further, as the docs have no reference to a public member function of PBKDF called set_iterations(). You're getting the error you mention because Botan::PBKDF really does have no member named set_iterations. You need to read the docs, work out what the purpose of set_iterations() was in your now deprecated example and hence how to achieve that purpose in the newer version of the library.
Possibly you missed your library header... as your error message says: 'has no member named...'