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Nested function in C
...fine a single publicly visible function that implements some complex logic by relying one or more nested functions to break the problem into smaller, logical pieces.
They simplify parameter passing in some cases. A nested function has access to all the parameters and some or all of the variables in ...
How can I truncate a double to only two decimal places in Java?
... to the Ones place:
simply cast to int
To the Tenths place:
multiply by ten
cast to int
cast back to double
and divide by ten.
Hundreths place
multiply and divide by 100 etc.
Example:
static double truncateTo( double unroundedNumber, int decimalPlaces ){
int truncatedNumberInt = (in...
$watch an object
...('form', function(newVal, oldVal){
console.log('changed');
}, true);
By default when comparing two complex objects in JavaScript, they will be checked for "reference" equality, which asks if the two objects refer to the same thing, rather than "value" equality, which checks if the values of al...
Configure Microsoft.AspNet.Identity to allow email address as username
...
You can allow this by plugging in your own UserValidator on the UserManager, or just by turning it off on the default implementation:
UserManager.UserValidator = new UserValidator<TUser>(UserManager) { AllowOnlyAlphanumericUserNames = fa...
What are “res” and “req” parameters in Express functions?
...params. (See https://stackoverflow.com/a/6913287/166530 )
request.params by default is filled with the value of any "component matches" in routes, i.e.
app.get('/user/:id', function(request, response){
response.send('user ' + request.params.id);
});
and, if you have configured express to use ...
Receive result from DialogFragment
...ally as it doesn't involve activities at all. But I've seen it recommended by official google people, and maybe even in the api demos. I think it's what g/setTargetFragment() were added for.
share
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Pandas every nth row
...he 2nd row it would be df.iloc[1::5, :].
– Little Bobby Tables
Nov 13 '16 at 17:18
17
You can omi...
How do I analyze a .hprof file?
...round, look at the Memory Analyzer project at Eclipse, contributed to them by SAP.
Some of what you can do is mind-blowingly good for finding memory leaks etc -- including running a form of limited SQL (OQL) against the in-memory objects, i.e.
SELECT toString(firstName) FROM com.yourcompany.som...
Properly removing an Integer from a List
...
By using casting, you ensure the compiler sees the type you expect. In the first case '(int) n' can only be of type int in the second case '(Integer) n' can only be of type Integer. 'n' will be converted/boxed/unboxed as req...
How to implement has_many :through relationships with Mongoid and mongodb?
...h methods that act very similar to the has_many :through from ActiveRecord by returning a query proxy instead of an array of records:
class Physician
include Mongoid::Document
has_many :appointments
def patients
Patient.in(id: appointments.pluck(:patient_id))
end
end
class Appointment...