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Type safety: Unchecked cast
...The problem is, getBean returns Object, so it is unknown what the type is. Converting it to HashMap directly would not cause the problem with the second case (and perhaps there would not be a warning in the first case, I'm not sure how pedantic the Java compiler is with warnings for Java 5). However...
How to save a PNG image server-side, from a base64 data string
I'm using Nihilogic's "Canvas2Image" JavaScript tool to convert canvas drawings to PNG images.
What I need now is to turn those base64 strings that this tool generates, into actual PNG files on the server, using PHP.
...
Where can I find the “clamp” function in .NET?
...ains a using directive for the namespace e.g.
using Core.ExtensionMethods
int i = 4.Clamp(1, 3);
.NET Core 2.0
Starting with .NET Core 2.0 System.Math now has a Clamp method that can be used instead:
using System;
int i = Math.Clamp(4, 1, 3);
...
The new keyword “auto”; When should it be used to declare a variable type? [duplicate]
... being created, just by looking at the code.
1. Avoid using new and raw-pointers though.
Sometime, the type is so irrelevant that the knowledge of the type is not even needed, such as in expression template; in fact, practically it is impossible to write the type (correctly), in such cases auto...
How to use null in switch
...e reason that the compiler doesn't complain about switch (i) where i is an Integer is because Java auto-unboxes the Integer to an int. As assylias already said, the unboxing will throw a NullPointerException when i is null.
* Since Java 7 you can use String in switch statements.
More about switch ...
When to use AtomicReference in Java?
...oUpdate = cache.get();
//... do some work to transform cachedValueToUpdate into a new version
Object newValue = someFunctionOfOld(cachedValueToUpdate);
boolean success = cache.compareAndSet(cachedValue,cachedValueToUpdate);
Because of the atomic reference semantics, you can do this even if the cac...
Proper way to initialize a C# dictionary with values?
... the version of C# the OP is using, object/collection initializers weren't introduced until C# 3.0. The detail as to why it didn't work before has already been answered.
– James
Jun 11 '13 at 15:20
...
Default implementation for Object.GetHashCode()
...e System {
public class Object {
[MethodImpl(MethodImplOptions.InternalCall)]
internal static extern int InternalGetHashCode(object obj);
public virtual int GetHashCode() {
return InternalGetHashCode(this);
}
}
}
InternalGetHashCode is mapped to...
Choose newline character in Notepad++
...
"Edit -> EOL Conversion". You can convert to Windows/Linux/Mac EOL there. The current format is displayed in the status bar.
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Similarity String Comparison in Java
...m's String Metrics") can be found here (original link dead, so it links to Internet Archive)
Also check these projects:
Simmetrics
jtmt
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