I\'ve got the following code where for some reason 开发者_JAVA技巧I\'m getting a KeyNotFoundException even though I\'m using a key that I had retrived a couple of lines above.Does anyone know of a sit
I am a newcomer to Scala. In 2.7.7, the following code abstract class C case class CC() extends C trait T
I have this test code: import java.util.*; class MapEQ { public static void main(String[] args) { Map<ToDos, String> m = new HashMap<ToDos, String>();
I have been trying to reason about the best way to handle whether it is generally good practice to implement hashcode and equals o开发者_如何学Pythonn entities (I mean entity in the general sense but
I\'m writing a c# program that will launch many child processes.At some time later on, I\'ll need to retrieve those processes by ID and then match those processes to a set of processes stored in a Dic
I want to put State objects (which are HashMaps with Character as key and State as Value into an ArrayList named allStates. Should I override the equals and hashCode methods here? Why? How?
Hello $mostamazingforumforfastanswersever. I have a quick silly question; what is the best way to write this :
In this file, in the function cross_from_below(x, threshold), there is a line that says threshold = threshold.What\'s the point of this line?Does t开发者_如何学运维his do something differently than if
I\'m working on a C# project on which, until now, I\'ve used immutable objects and factories to ensure that objects of type Foo can always be compared for equality with 开发者_高级运维==.
I have a Dictionary which I am comparing to another Dictionary (variables typed as IDictionary).Doing d1.Equals(d2) yields false.Writing my own code below yields true.Both are System.Collections.Gener
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