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Does the default constructor initialize built-in types?
...mple, if your class has no user-declared constructor
class C {
public:
int x;
};
then the compiler will implicitly provide one. The compiler-provided constructor will do nothing, meaning that it will not initialize C::x
C c; // Compiler-provided default constructor is used
// Here `c.x` conta...
Kotlin secondary constructor
...ctory method next to your class
fun C(s: String) = C(s.length)
class C(a: Int) { ... }
usage:
val c1 = C(1) // constructor
val c2 = C("str") // factory method
Technique 2. (may also be useful) Define default values for parameters
class C(name: String? = null) {...}
usage:
val c1 = C("foo")...
What is the maximum depth of the java call stack?
How deep do I need to go into the call stack before I get a StackOverflowError? Is the answer platform dependent?
4 Answers...
C++ Erase vector element by value rather than by position? [duplicate]
... to get an iterator to a value:
#include <algorithm>
std::vector<int>::iterator position = std::find(myVector.begin(), myVector.end(), 8);
if (position != myVector.end()) // == myVector.end() means the element was not found
myVector.erase(position);
...
SQL Server 2012 column identity increment jumping from 6 to 1000+ on 7th entry [duplicate]
I have a strange scenario in which the auto identity int column in my SQL Server 2012 database is not incrementing properly.
...
passing argument to DialogFragment
...
Using newInstance
public static MyDialogFragment newInstance(int num) {
MyDialogFragment f = new MyDialogFragment();
// Supply num input as an argument.
Bundle args = new Bundle();
args.putInt("num", num);
f.setArguments(args);
return f;
}
And get the Args l...
How do you allow spaces to be entered using scanf?
...put.
Use fgets() (which has buffer overflow protection) to get your input into a string and sscanf() to evaluate it. Since you just want what the user entered without parsing, you don't really need sscanf() in this case anyway:
#include <stdio.h>
#include <stdlib.h>
#include <string...
Any gotchas using unicode_literals in Python 2.6?
... both, python tries to decode the encoded string (assuming it's ascii) and convert it to unicode and fails. It would work if you did print name + two.name.decode('utf-8').
The same thing can happen if you encode a string and try to mix them later.
For example, this works:
# encoding: utf-8
html = ...
URLWithString: returns nil
...breaks if the URL has a # in it. stringByAddingPercentEscapesUsingEncoding converts # to %2
– Ali Saeed
Mar 2 '16 at 21:21
3
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How to capitalize the first letter in a String in Ruby
...
Thank you just what I was looking for, useful for converting headings to 'sentence case'
– Good Lux
Sep 23 '17 at 11:12
2
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