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Java 8 Streams - collect vs reduce
... for having two different approaches:
If we wanted to take a stream of strings and concatenate them into a
single long string, we could achieve this with ordinary reduction:
String concatenated = strings.reduce("", String::concat)
We would get the desired result, and it would even wo...
Get exception description and stack trace which caused an exception, all as a string
...2, in raise_error
RuntimeError: something bad happened!
Getting just the string
If you really just want the string, use the traceback.format_exc function instead, demonstrating logging the string here:
import traceback
try:
do_something_that_might_error()
except Exception as error:
just_...
How to get the user input in Java?
...ss
import java.util.Scanner;
//...
Scanner scan = new Scanner(System.in);
String s = scan.next();
int i = scan.nextInt();
BufferedReader and InputStreamReader classes
import java.io.BufferedReader;
import java.io.InputStreamReader;
//...
BufferedReader br = new BufferedReader(new InputStreamReade...
.NET console application as Windows service
...
#region Nested classes to support running as service
public const string ServiceName = "MyService";
public class Service : ServiceBase
{
public Service()
{
ServiceName = Program.ServiceName;
}
protected override void OnStart(string[] arg...
Can't specify the 'async' modifier on the 'Main' method of a console app
... identical usage:
using Nito.AsyncEx;
class Program
{
static void Main(string[] args)
{
AsyncContext.Run(() => MainAsync(args));
}
static async void MainAsync(string[] args)
{
Bootstrapper bs = new Bootstrapper();
var list = await bs.GetList();
}
}...
Why should I care that Java doesn't have reified generics?
... cases where it would be the best solution:
public void my_method(List<String> input) { ... }
public void my_method(List<Integer> input) { ... }
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How to concatenate two numbers in javascript?
...
Use "" + 5 + 6 to force it to strings. This works with numerical variables too:
var a = 5;
var b = 6;
console.log("" + a + b);
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impro...
Split string based on regex
What is the best way to split a string like "HELLO there HOW are YOU" by upper case words (in Python)?
3 Answers
...
Are strongly-typed functions as parameters possible in TypeScript?
... callback(42);
}
}
var foo = new Foo();
var strCallback = (result: string) : void => {
alert(result);
}
var numCallback = (result: number) : void => {
alert(result.toString());
}
foo.save(strCallback); // not OK
foo.save(numCallback); // OK
If you want, you can define a type...
Convert base class to derived class [duplicate]
... { get; set; }
}
class B
{
public int IntProp { get; set; }
public string StrProp { get; set; }
}
In global.asax or application startup:
AutoMapper.Mapper.CreateMap<A, B>();
Usage:
var b = AutoMapper.Mapper.Map<B>(a);
It's easily configurable via a fluent API.
...