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How to test equality of Swift enums with associated values
...se the default statement in the switch, so if you add a new enum case, the compiler doesn't make sure you add the clause to compare that new case for equality – you'll just have to remember and be careful when you make changes later down the line!
– Michael Waterfall
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How does std::forward work? [duplicate]
... edited May 23 '17 at 10:31
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answered Dec 15 '11 at 22:14
XeoXeo
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Examples of GoF Design Patterns in Java's core libraries
...eckedXXX(), synchronizedXXX() and unmodifiableXXX() methods.
javax.servlet.http.HttpServletRequestWrapper and HttpServletResponseWrapper
javax.swing.JScrollPane
Facade (recognizeable by behavioral methods which internally uses instances of different independent abstract/interface types)
javax.face...
How to get a key in a JavaScript object by its value?
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180
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Iterating C++ vector from the end to the beginning
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59
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Why do loggers recommend using a logger per class?
...eed to resort to more reflection tricks to know where the log messages are coming from.
Compare the following:
Log per class
using System.Reflection;
private static readonly ILog _logger =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
public void SomeMethod()
{
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How to atomically delete keys matching a pattern using Redis
... and enter this into redis-cli and you are good to go.
Credit lisco from: http://redis.io/commands/del
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Linq to Entities - SQL “IN” clause
...cates together to create an expression for the complete predicate
Source: http://blogs.msdn.com/b/alexj/archive/2009/03/26/tip-8-writing-where-in-style-queries-using-linq-to-entities.aspx
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std::string formatting like sprintf
...ave write access to the underlying buffer (until C++11; see Dietrich Epp's comment). You'll have to do it first in a c-string, then copy it into a std::string:
char buff[100];
snprintf(buff, sizeof(buff), "%s", "Hello");
std::string buffAsStdStr = buff;
But I'm not sure why you wouldn't jus...
converting a base 64 string to an image and saving it
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