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Does every Core Data Relationship have to have an Inverse?
...it into this case.
Assume you modeled it as follows:
Note you have a to-one relationship called "type", from SocialApp to SocialAppType. The relationship is non-optional and has a "deny" delete rule.
Now consider the following:
SocialApp *socialApp;
SocialAppType *appType;
// assume entity inst...
How to get the focused element with jQuery?
...focus');
// No jQuery:
elem === elem.ownerDocument.activeElement;
Which one should you use? quoting the jQuery docs:
As with other pseudo-class selectors (those that begin with a ":"), it is recommended to precede :focus with a tag name or some other selector; otherwise, the universal selecto...
JAX-RS / Jersey how to customize error handling?
...he first approach is to create an Exception class that extends WebApplicationException.
Example:
public class NotAuthorizedException extends WebApplicationException {
public NotAuthorizedException(String message) {
super(Response.status(Response.Status.UNAUTHORIZED)
.ent...
Getting error while sending email through Gmail SMTP - “Please log in via your web browser and then
...this allows you to use the google smtp for clients other than the official ones.
Update
Google has been so kind as to list all the potential problems and fixes for us. Although I recommend trying the less secure apps setting. Be sure you are applying these to the correct account.
If you've ...
What's the difference between => , ()=>, and Unit=>
...ame: => Type
The => Type notation stands for call-by-name, which is one of the many ways parameters can be passed. If you aren't familiar with them, I recommend taking some time to read that wikipedia article, even though nowadays it is mostly call-by-value and call-by-reference.
What it mea...
How to programmatically click a button in WPF?
...ts using a provided factory to get the automation peer instead of creating one yourself.
– Greg D
Apr 8 '09 at 11:46
7
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What is the easiest way to ignore a JPA field during persistence?
... response.
In order to avoid a field from an entity to be persisted in DB one can use one of the two mechanisms:
@Transient - the JPA annotation marking a field as not persistable
transient keyword in java. Beware - using this keyword, will prevent the field to be used with any serialization mech...
Git will not init/sync/update new submodules
...t work, then as described above git submodule add url should do the trick. One can cross check this by
git config --list
and one should get an entry of the submodule you want to pull in the result of the git config --list command. If there is an entry of your submodule in the config result, the...
How do I rename an open file in Emacs?
...e in Emacs? While I'm viewing it? Something like save-as, but the original one should go away.
10 Answers
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How do I globally configure RSpec to keep the '--color' and '--format specdoc' options turned on
...
One big advantage of the ~/.rspec solution is the portability. E.g. our CI server does not handle color output very well. With the user dir config file, we can easily adopt to different environments.
– C...