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Implementing Fast and Efficient Core Data Import on iOS 5
...'s own thread...
[masterManagedObjectContext performBlock:^{
NSError *error = nil;
BOOL saveSuccess = [masterManagedObjectContext save:&error];
// Handle error...
[notificationCenter removeObserver:self name:NSManagedObjectContextDidSaveNotification object:mas...
How to install lxml on Ubuntu
... On Ubuntu 16.04 too zlib1g-dev is necessary. Without this I got the error /usr/bin/ld: cannot find -lz.
– Jabba
Aug 4 '16 at 16:02
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What does yield mean in PHP?
... 5.5. Trying to use yield before that version will result in various parse errors, depending on the code that follows the keyword. So if you get a parse error from that code, update your PHP.
Sources and further reading:
Official docs
The original RFC
kelunik's blog: An introduction to generators...
How to create an installer for a .net Windows Service using Visual Studio
...me contains invalid characters, is empty, or is too long (max length = 80) error when adding the Installer then right click in the grey area again, go to Properties and ensure that the Service Name value is set.
– wolfyuk
Jun 24 '15 at 8:46
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AngularJS: Understanding design pattern
...a Application business rules, which is application specific. For instance, error checks and handling.
It is important to stress that both of these within a client context are not 'real' business logic - they only deal with the portion of it that is important for the client. Application logic (not d...
How can I use break or continue within for loop in Twig template?
...e beginning of the stream
// the stream will throw a \Twig_Error_Syntax
$token = $stream->look(-$i);
} catch (\Twig_Error_Syntax $e) {
break;
}
if ($token->test(\Twig_Token::NAME_TYPE, 'for')) {
...
Type of conditional expression cannot be determined because there is no implicit conversion between
... x and y has a type and certain good conditions are met, or a compile-time error occurs. Here, "certain good conditions" means certain conversions are possible, which we will get into the details of below.
Now, let's turn to the germane part of the spec:
If only one of x and y has a type, and both ...
Node.js: Difference between req.query[] and req.params
... req.query.currentPage
Why? If you delete + in this case, you will get an error, and that error will be thrown because we will use invalid type (with error message 'limit' field must be numeric).
Important: By default if you extracting something from these query parameters, it will always be a str...
Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
...3, you might get the following when trying to run that:
Updating RubyGems
ERROR: While executing gem ... (RuntimeError)
No gem names are allowed with the --system option
If you get that error, then update, so that it lets you specify the version, and then downgrade again:
gem update --syste...
Retrieving a random item from ArrayList [duplicate]
...has never been declared as a variable, so it makes sense that it causes an error. But more importantly, you have code after a return statement and this will cause an unreachable code error.
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