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When to use AtomicReference in Java?
...t;();
Object cachedValue = new Object();
cache.set(cachedValue);
//... time passes ...
Object cachedValueToUpdate = cache.get();
//... do some work to transform cachedValueToUpdate into a new version
Object newValue = someFunctionOfOld(cachedValueToUpdate);
boolean success = cache.compareAndSet(ca...
What is the difference between children and childNodes in JavaScript?
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Understand that .children is a property of an Element. 1 Only Elements have .children, and these children are all of type Element. 2
However, .childNodes is a property of Node. .childNodes can contain any node. 3
A concrete example would be:
let el = document.createEleme...
Objective-C for Windows
...previous answers, if you just want Objective-C but not any of the Cocoa frameworks, then gcc will work on any platform. You can use it through Cygwin or get MinGW. However, if you want the Cocoa frameworks, or at least a reasonable subset of them, then GNUStep and Cocotron are your best bets.
Cocot...
how to set textbox value in jquery
... the one below but I get the [object Object] as output. Please enlighten me on this, I'm new to jquery.
4 Answers
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Get exception description and stack trace which caused an exception, all as a string
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Does Entity Framework Code First support stored procedures?
...mation? Don't you still have access to the underlying ObjectContext?
IEnumerable<Customer> customers =
((IObjectContextAdapter)this)
.ObjectContext.ExecuteStoreQuery<Customer>("select * from customers");
Replace the "select" statement with a stored proc, and there you go.
A...
JdbcTemplate queryForInt/Long is deprecated in Spring 3.2.2. What should it be replaced by?
The queryforInt/queryforLong methods in JdbcTemplate are deprecated in Spring 3.2. I can't find out why or what is considered the best practice to replace existing code using these methods.
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How to form tuple column from two columns in Pandas
I've got a Pandas DataFrame and I want to combine the 'lat' and 'long' columns to form a tuple.
4 Answers
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nil detection in Go
...o you, you're comparing a structure instance and nil. They're not of the same type so it considers it as an invalid comparison and yells at you.
What you want to do here is to compare a pointer to your config instance to nil, which is a valid comparison. To do that you can either use the golang new...
How can I do DNS lookups in Python, including referring to /etc/hosts?
...'s ip. In case you want the latter,
import socket
print(socket.gethostbyname('localhost')) # result from hosts file
print(socket.gethostbyname('google.com')) # your os sends out a dns query
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