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Declare a constant array
...fined as locals in functions, and can only be numbers, characters (runes), strings or booleans. Because of the compile-time restriction, the expressions that define them must be constant expressions, evaluatable by the compiler. For instance, 1<<3 is a constant expression, while math.Sin(math....
Setting the default Java character encoding
...p; by the time your main method is entered, the character encoding used by String.getBytes() and the default constructors of InputStreamReader and OutputStreamWriter has been permanently cached.
As Edward Grech points out, in a special case like this, the environment variable JAVA_TOOL_OPTIONS can ...
How to count items in a Go map?
...Use len(m). From http://golang.org/ref/spec#Length_and_capacity
len(s) string type string length in bytes
[n]T, *[n]T array length (== n)
[]T slice length
map[K]T map length (number of defined keys)
chan T number o...
Is it possible to Pivot data using LINQ?
...r column ordering
var r = s.Pivot3(e => e.custID, e => e.OrderDate.ToString("MMM-yyyy")
, lst => lst.Sum(e => e.Qty));
// order r(esult) by CustID
(+) generic implementation
(-) definitely slower than Amy B's
Can anyone improve my implementation (i.e. the method does the orderin...
How do I implement a callback in PHP?
... "callable" interchangeably, however, "callback" traditionally refers to a string or array value that acts like a function pointer, referencing a function or class method for future invocation. This has allowed some elements of functional programming since PHP 4. The flavors are:
$cb1 = 'someGlobal...
Create a new object from type parameter in generic class
...ve arguments, you can use.
export class Foo2 {
constructor(public arg1: string, public arg2: number) {
}
bar() {
console.log(this.arg1);
console.log(this.arg2);
}
}
getInstance(Foo, "Hello World", 2).bar();
...
Sort an Array by keys based on another Array?
...
It works nicely if you have string keys but not for the numerical one. PHP Docs: "If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however, the arrays contain numeric keys, the later v...
Difference between Repository and Service Layer?
...e could look like:
public interface IUserService
{
User GetByUserName(string userName);
string GetUserNameByEmail(string email);
bool EditBasicUserData(User user);
User GetUserByID(int id);
bool DeleteUser(int id);
IQueryable<User> ListUsers();
bool ChangePassword(...
Test parameterization in xUnit.net similar to NUnit
...oon", true)]
[InlineData("hello world", "hi", false)]
public void Contains(string input, string sub, bool expected)
{
var actual = input.Contains(sub);
Assert.Equal(expected, actual);
}
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.NET Global exception handler in console application
...an work from perhaps:
using System;
class Program {
static void Main(string[] args) {
System.AppDomain.CurrentDomain.UnhandledException += UnhandledExceptionTrapper;
throw new Exception("Kaboom");
}
static void UnhandledExceptionTrapper(object sender, UnhandledExceptio...