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Why can I call private methods via Object#send, but not directly call said methods?


Why can I call private methods via Object#send, but not directly call said methods?

By : Sam Tallman
Date : October 17 2020, 01:08 AM
With these it helps Why can I call a private method via Object#send(:private_method)?
Look carefully at what you did:
code :
me.send(:private_say_hi)
me.private_say_hi


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How can I call methods on items in a ReferenceQueue if type erasure has allowed me to only call Object() methods?

How can I call methods on items in a ReferenceQueue if type erasure has allowed me to only call Object() methods?


By : Bruno Clemente
Date : March 29 2020, 07:55 AM
hop of those help? I have a reference queue, declared as: , If you don't want type erasure, don't erase the type.
code :
Reference<? extends MapChunk> ref = rqueue.poll();
MapChunk mc = ref.get();
Call list of methods on object in sequence, piping the methods?

Call list of methods on object in sequence, piping the methods?


By : user7404887
Date : March 29 2020, 07:55 AM
wish helps you Do as below using Enumerable#inject
code :
object = 1
%w(to_s split shift).inject(object,:send) # => "1"
Can no longer call methods on Javascript object after res.send with Node.js

Can no longer call methods on Javascript object after res.send with Node.js


By : endriu
Date : March 29 2020, 07:55 AM
seems to work fine The problem is that you receive the object as the payload of a response. This payload is then deserialized as an object, but it's just that, a plain object. You need to wrap the received tiff plain object again with the Tiff library if you want to call its methods on it.
The fact that you're using JS on both the client and the server means you can share some code, but it does not mean that the objects are shared: you're still using a client/server model and objects are passed from one side to the other after being serialized/deserialized to something (probably JSON) that contains the data and ONLY the data. Functions are not serialized.
Reflection : How to call dynamic methods based on which object is being send

Reflection : How to call dynamic methods based on which object is being send


By : David
Date : March 29 2020, 07:55 AM
this one helps. I am trying to invoke methods on instances of two different classes. I think I want to do this using reflection, but I'm having trouble with that. Here's my code without reflection: , You can call search specific methods in your if or else code blocks:
code :
if (bSearch instanceof BruteForceSearch) {
    BruteForceSearch search = (BruteForceSearch) bSearch;     
} else if (bSearch instanceof RegExSearch) {
    RegExSearch search = (RegExSearch) bSearch;     
}
if (bSearch instanceof BruteForceSearch) {
    BruteForceSearch search = (BruteForceSearch) bSearch;
    // perform brute force specific calls, e.g. search.setMaxTimeSeconds(100);
} else if (bSearch instanceof RegExSearch) {
    RegExSearch search = (RegExSearch) bSearch;
    // perform regular expression specific calls
}
private static void displaySearch(String toSearch, Searcher searcher) {
    ...
    searcher.search(...);
    ...
}
Java 8: Better to extend class of static methods or better to call static methods directly?

Java 8: Better to extend class of static methods or better to call static methods directly?


By : Naman Mahna
Date : March 29 2020, 07:55 AM
With these it helps Static members aren't "inherited" per se. They live on the base class regardless of which subclass they're called from, so I doubt there's any memory impact.
The reason for creating all classes as a subclass of this common class is just for easy access to static members without the qualifying class name. A common variation is to inherit from an interface that declares a bunch of static fields. The upside is that implementing an interface doesn't interfere with inheritance the way a superclass would (you can only extend a single superclass). The downside is that until Java 8 it wasn't possible to declare static methods on an interface.
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