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How do I remove code duplication between similar const and non-const member functions?
...t's say I have the following class X where I want to return access to an internal member:
19 Answers
...
Difference between partition key, composite key and clustering key in Cassandra?
...able stackoverflow_composite (
key_part_one text,
key_part_two int,
data text,
PRIMARY KEY(key_part_one, key_part_two)
);
In a situation of COMPOSITE primary key, the "first part" of the key is called PARTITION KEY (in this example key_part_one is the partition key)...
How to determine device screen size category (small, normal, large, xlarge) using code?
...playMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int density = metrics.densityDpi;
if (density == DisplayMetrics.DENSITY_HIGH) {
Toast.makeText(this, "DENSITY_HIGH... Density is " + String.valueOf(density), Toast.LENGTH_LONG).show();
}
else if (density == DisplayMetric...
How to pass “Null” (a real surname!) to a SOAP web service in ActionScript 3
...ML
}
When currentChild.appendChild is passed the string "null", it first converts it to a root XML element with text null, and then tests that element against the null literal. This is a weak equality test, so either the XML containing null is coerced to the null type, or the null type is coerced ...
When should I use a struct instead of a class?
...
It logically represents a single value, similar to primitive types
(integer, double, and so on).
It has an instance size smaller than 16 bytes.
It is immutable.
It will not have to be boxed frequently.
share...
What is the difference between instanceof and Class.isAssignableFrom(…)?
...pes. isAssignableFrom() can be used with any class objects:
a instanceof int // syntax error
3 instanceof Foo // syntax error
int.class.isAssignableFrom(int.class) // true
See http://java.sun.com/javase/6/docs/api/java/lang/Class.html#isAssignableFrom(java.lang.Class).
...
Is it possible to figure out the parameter type and return type of a lambda?
...aits<ReturnType(ClassType::*)(Args...) const>
// we specialize for pointers to member function
{
enum { arity = sizeof...(Args) };
// arity is the number of arguments.
typedef ReturnType result_type;
template <size_t i>
struct arg
{
typedef typename std:...
Random row from Linq to Sql
...m row in ctx.Customers
where row.IsActive
select row;
int count = qry.Count(); // 1st round-trip
int index = new Random().Next(count);
Customer cust = qry.Skip(index).FirstOrDefault(); // 2nd round-trip
...
Efficient way to remove ALL whitespace from String?
...WhiteSpace1(string input, string expected)
{
string s = null;
for (int i = 0; i < 1000000; i++)
{
s = input.RemoveWhitespace();
}
Assert.AreEqual(expected, s);
}
[Test]
[TestCase("123 123 1adc \n 222", "1231231adc222")]
public void RemoveWhiteSpace2(string input, stri...
What is the fastest integer division supporting division by zero no matter what the result is?
...the comments I got rid of the branch on my Pentium and gcc compiler using
int f (int x, int y)
{
y += y == 0;
return x/y;
}
The compiler basically recognizes that it can use a condition flag of the test in the addition.
As per request the assembly:
.globl f
.type f, @funct...