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How does an underscore in front of a variable in a cocoa objective-c class work?
... must mean that they use it internally for their own frameworks like UIKit etc. Which is why we shouldn't carelessly use it. But I see that, in the link you provided @kelan. They actually say in the "revision history" that it is "suitable" to use (). I interpret is as we "can" use it if we want.
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Obtaining a powerset of a set in Java
...re going to iterate it that's obviously O(2^n).
contains() would be O(n), etc.
Do you really need this?
EDIT:
This code is now available in Guava, exposed through the method Sets.powerSet(set).
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
...Repository<Person, Long> {
@Query("SELECT p FROM Person p JOIN FETCH p.roles WHERE p.id = (:id)")
public Person findByIdAndFetchRolesEagerly(@Param("id") Long id);
}
This method will use JPQL's fetch join clause to eagerly load the roles association in a single round-trip to the dat...
Data access object (DAO) in Java
...at interface to deal with SQL server, and another to deal with flat files, etc.
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How do I return the response from an asynchronous call?
...ext;
}
If you use any other jQuery Ajax method, such as $.get, $.getJSON, etc., you have to change it to $.ajax (since you can only pass configuration parameters to $.ajax).
Heads up! It is not possible to make a synchronous JSONP request. JSONP by its very nature is always asynchronous (one more r...
Matplotlib Legends not working
...legend()
The legend will retain line properties like thickness, colours, etc.
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NodeJS - What does “socket hang up” actually mean?
...nd decide how to handle it: whether retry the request, queue it for later, etc.
When you are a server/proxy
When you, as a server, perhaps a proxy server, receive a request from a client, then start acting upon it (or relay the request to the upstream server), and before you have prepared the resp...
Javascript fuzzy search that makes sense
...decent upgrades. However, I could not get it to use bool's (i.e. OR, AND, etc operators) nor could I use the API search interface to filter results.
I discovered nextapps-de/flexsearch: https://github.com/nextapps-de/flexsearch and I believe it by far surpasses a lot of the other javascript search...
Function in JavaScript that can be called only once
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Reusable invalidate function which works with setInterval etc,.: jsbin.com/vicipar/1/edit?js,console
– Q20
Apr 27 '17 at 23:41
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How to get JavaScript caller function line number? How to get JavaScript caller source URL?
...ou want( for example in firefox you can get the file name, and line number etc.. ; in chrome you get something similar if you read the 'stack' property of the Error instance).
Long story short , you can do something like this:
function errorHandler(error, errorInstance){
this.errorMessage = er...