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Default parameters with C++ constructors [closed]
...-argument constructor:
class Vehicle {
public:
Vehicle(int wheels, std::string name = "Mini");
};
Vehicle x = 5; // this compiles just fine... did you really want it to?
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Setup RSpec to test a gem (not Rails)
...end
context '#lick_things' do
it 'should return the dog\'s name in a string' do
@dog.lick_things.should include 'woofer!:'
end
end
end
Open up Terminal and run rspec:
~/awesome_gem $ rspec
..
Finished in 0.56 seconds
2 examples, 0 failures
If you want some .rspec options love...
Detect if the app was launched/opened from a push notification
... dictionary has the data you expect
if let type = userInfo["type"] as? String where type == "status" {
// IF the wakeTime is less than 1/10 of a second, then we got here by tapping a notification
if application.applicationState != UIApplicationState.Background && NSDate().tim...
master branch and 'origin/master' have diverged, how to 'undiverge' branches'?
...trouble! Instead, use merge as:
git merge master
Yes, you'll end up with extra commits on your branch. But unless you are up for "un-diverging" branches, this will be a much smoother workflow than rebasing. See this blog for a much more detailed explanation.
On the other hand, if your branch is on...
When to use single quotes, double quotes, and backticks in MySQL
...hen possible, avoiding the quoting issue.
Single quotes should be used for string values like in the VALUES() list. Double quotes are supported by MySQL for string values as well, but single quotes are more widely accepted by other RDBMS, so it is a good habit to use single quotes instead of double...
HTTP POST Returns Error: 417 “Expectation Failed.”
...
I think I picked up an extra 10 points for getting an answer accepted in a thread that Jon Skeet posted a solution into.
– xcud
Feb 20 '09 at 5:39
...
select and update database record with a single queryset
...value that evaluates to True (i.e., a value
other than None or the empty string), Django executes an UPDATE. If
the object’s primary key attribute is not set or if the UPDATE didn’t
update anything, Django executes an INSERT.
Ref.: https://docs.djangoproject.com/en/1.9/ref/models/instanc...
DefaultInlineConstraintResolver Error in WebAPI 2
...in a Route, you specified something like
[Route("SomeRoute/{someparameter:string}")]
"string" is not needed as it is the assumed type if nothing else is specified.
As the error indicates, the DefaultInlineConstraintResolver that Web API ships with does not have an inline constraint called string...
On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi
... {
Intent intent = new Intent(this, HomeActivity.class);
intent.putExtra("finish", true);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // To clean up all activities
startActivity(intent);
finish();
}
HomeActivity:
@Override
protected void onCreate(Bundle savedInstanceStat...
What algorithms compute directions from point A to point B on a map?
...
Just addressing the triangle inequality violations, hopefully the extra factor they're optimising for is common sense. You don't necessarily want the shortest or fastest route, as it can lead to chaos and destruction. If you want your directions to prefer the major routes that are truck-fri...