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Semaphore vs. Monitors - what's the difference?
...ions or methods of a monitor object will enforce mutual exclusion, so only one thread may be performing any action on the object at a given time. If one thread is currently executing a member function of the object then any other thread that tries to call a member function of that object will have t...
What do all of Scala's symbolic operators mean?
... them. For example, <= on Int means "less than or equal to". The first one, ->, I'll give as example below. :: is probably the method defined on List (though it could be the object of the same name), and :+= is probably the method defined on various Buffer classes.
So, let's see them.
Keywo...
JMS Topic vs Queues
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That means a topic is appropriate. A queue means a message goes to one and only one possible subscriber. A topic goes to each and every subscriber.
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How do I convert array of Objects into one Object in JavaScript?
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Check out FirstOne's answer for a modern approach.
– Tibos
Feb 10 '19 at 13:14
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One-liner to check whether an iterator yields at least one element?
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Similarly if you need to check if the iterator is empty, one could use all(False for _ in iterator) will check if the iterator is empty. (all returns True if the iterator is empty, otherwise it stops when it sees the first False element)
– KGardevoir
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What is the best way to solve an Objective-C namespace collision?
Objective-C has no namespaces; it's much like C, everything is within one global namespace. Common practice is to prefix classes with initials, e.g. if you are working at IBM, you could prefix them with "IBM"; if you work for Microsoft, you could use "MS"; and so on. Sometimes the initials refer to ...
Can you delete multiple branches in one command with Git?
...ith things like * and -> (for symrefs) which can mess you up in scripts/one-liners.
– Cascabel
Sep 8 '10 at 23:05
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Why don't they teach these things in school? [closed]
... I'm really wondering why they don't teach a few of the things I learned sooner in school though. To name a few:
32 Answer...
How can I use inverse or negative wildcards when pattern matching in a unix/linux shell?
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pattern matching operators are recognized.A pattern-list is a list of one or more patterns separated by a |. Composite patterns may be formed using one or more of the following sub-patterns:
?(pattern-list)
Matches zero or one occurrence of the given patterns
*(pattern-list)
Ma...
Difference between Key, Primary Key, Unique Key and Index in MySQL
...' records are held. This is very similar to how we, humans, go through a phone book directory to find someone by the last name: We don't start searching through the directory from cover to cover, as long we inserted the information in some order that we can use to skip quickly to the 'S' pages.
Pri...