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What are rvalues, lvalues, xvalues, glvalues, and prvalues?
...istinction between expressions that can be moved, and in which direction.
From what I guess based on the draft, the r/l value distinction stays the same, only in the context of moving things get messy.
Are they needed? Probably not if we wish to forfeit the new features. But to allow better optim...
Net::SMTPAuthenticationError when sending email from Rails app (on staging environment)
I am sending email from my Rails application. It works well on development environment, but fails on staging. I get the following error:
...
What are the differences in die() and exit() in PHP?
...he difference between die() and exit() in PHP is their origin.
exit() is from exit() in C.
die() is from die in Perl.
FUNCTIONALLY EQUIVALENT
die() and exit() are equivalent functions.
PHP Manual
PHP Manual for die:
This language construct is equivalent to exit().
PHP Manual for exit:...
Illegal pattern character 'T' when parsing a date string to java.util.Date
... in UTC.
Convert to the old class.
java.util.Date date = java.util.Date.from( instant ); // Pass an `Instant` to the `from` method.
Time Zone
If needed, you can assign a time zone.
ZoneId zoneId = ZoneId.of( "America/Montreal" ); // Define a time zone rather than rely implicitly on JVM’s c...
Proper practice for subclassing UIView?
...ods, but when subclassing a UIView, the closest methosds I have are `awakeFromNib , drawRect , and layoutSubviews . (I'm thinking in terms of setup and teardown callbacks.) In my case, I'm setting up my frame and internal views in layoutSubviews , but I'm not seeing anything onscreen.
...
What is the difference between MVC and MVVM? [closed]
...ew is displaying it, but more importantly no idea where its data is coming from.
*Note: in practice Controllers remove most of the logic, from the ViewModel, that requires unit testing. The VM then becomes a dumb container that requires little, if any, testing. This is a good thing as the VM is just...
How to store standard error in a variable
...direction over the enclosed commands. As written, it would capture errors from sed too.
WARNING: Formally untested code - use at own risk.
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Java 8 Iterable.forEach() vs foreach loop
...r;
}
Can't handle checked exceptions. Lambdas aren't actually forbidden from throwing checked exceptions, but common functional interfaces like Consumer don't declare any. Therefore, any code that throws checked exceptions must wrap them in try-catch or Throwables.propagate(). But even if you do ...
Best way to load module/class from lib folder in Rails 3?
Since the latest Rails 3 release is not auto-loading modules and classes from lib anymore,
what would be the best way to load them?
...
Read values into a shell variable from a pipe
I am trying to get bash to process data from stdin that gets piped into, but no luck. What I mean is none of the following work:
...