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What are some compelling use cases for dependent method types?
...argkeys: Tuple[DependentHashKey,DependentHashKey])(func: Env => argkeys._0.ValueType => argkeys._1.ValueType => A): A. We wouldn't use a collection of argument keys, because the element types would be subsumed (unknown at compile-time) in the type of collection.
– Shel...
Building a complete online payment gateway like Paypal [closed]
... of major banks, they all end up using one of five or so card acquirers.
Happily, all UK card acquirers use a standard protocol for communication of authorisation requests, and end of day settlement. You will find minor quirks where some acquiring banks support some features and have slightly diff...
How do I create a Java string from the contents of a file?
...ne terminators:
String content = Files.readString(path, StandardCharsets.US_ASCII);
For versions between Java 7 and 11, here's a compact, robust idiom, wrapped up in a utility method:
static String readFile(String path, Charset encoding)
throws IOException
{
byte[] encoded = Files.readAllBytes(...
Mutex example / tutorial? [closed]
...<thread>
#include <mutex>
std::mutex m;//you can use std::lock_guard if you want to be exception safe
int i = 0;
void makeACallFromPhoneBooth()
{
m.lock();//man gets a hold of the phone booth door and locks it. The other men wait outside
//man happily talks to his wife from ...
Is a one column table good design? [closed]
...
+1: The table is a set of values that happen to be primitive types of your RDBMS.
– S.Lott
Jun 7 '09 at 1:57
4
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Under what circumstances are linked lists useful?
...
I should add that the "linked lists in an array" approach in case of the Dictionary saves significantly more in .NET: otherwise each node would require a separate object on the heap - and every object allocated on the heap have some overhead. (en.csharp-online.net/Common_Ty...
Map enum in JPA with fixed values?
...ic implementation, tweak it as required):
@Entity
@Table(name = "AUTHORITY_")
public class Authority implements Serializable {
public enum Right {
READ(100), WRITE(200), EDITOR (300);
private int value;
Right(int value) { this.value = value; }
public int ...
Why do some claim that Java's implementation of generics is bad?
...and introduce new collection types. (.NET generics in 2.0 didn't break 1.1 apps.)
– Jon Skeet
Feb 7 '09 at 11:13
6
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Git: How to squash all commits on branch
...- non destructive and only oops moment may be checking in too much such as app secrets etc, which shouldn't matter if you have a proper gitignore file
– kkarakk
May 31 '19 at 6:41
...
Setting the default Java character encoding
...Charset.defaultCharset() to find the current default encoding, and use the appropriate method or constructor overload to specify it.
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