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Constructors vs Factory Methods [closed]
...ibility to one of several helper subclasses, and you want to localize the knowledge of which helper subclass is the delegate
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Case-insensitive search in Rails model
...ot's comment does not apply to strings from user input. "#$$" is a little-known shortcut for escaping global variables with Ruby string interpolation. It's equivalent to "#{$$}". But string interpolation doesn't happen to user-input strings. Try these in Irb to see the difference: "$##" and '$##'. T...
Is it possible to allow didSet to be called during initialization in Swift?
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Don't know why it works -- but it does. Directly setting the new value within the init()-Method doesn't call didSet() -- but using the given Method setSomeProperty() does.
– Oliver
Aug 10 '14 a...
scheduleAtFixedRate vs scheduleWithFixedDelay
... executor.shutdown()
} else {
Thread.sleep(2000L)
val now = System.currentTimeMillis()
time += now - start
System.out.println("Total $time delay ${now - start}\n")
start = now
}
}, 0L, 1000L, TimeUnit.MILLISECONDS)
And see the results:
| scheduleWi...
Difference between core and processor
...t the single CPU into two virtual CPUs i.e we have two cores for our task. Now the CPU is single, but it is only pretending (masqueraded) that it has a dual CPU and performs multiple tasks. But having real multiple cores will be better than that so people develop making multi-core processor i.e. mul...
GetHashCode Guidelines in C#
...rate with hash tables" or similar. Like most things, GetHashCode is about knowing when to break the rules.
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Excel “External table is not in the expected format.”
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I have the ACE engine installed, but I need to know what reference I I need to include in my project so that my installer includes it. Not all machines that my app is installed on will necessarily have MS Office installed.
– jp2code
M...
PHP method chaining?
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@alex: I don't have PHP 4 to test with right now, but I'm pretty sure not.
– BoltClock♦
Sep 16 '10 at 6:23
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Python, Unicode, and the Windows console
...e and system console is not necessarily the best combination, but I don't know enough about this, so if you need a definite answer, post a question here on SO about it.
– Lasse V. Karlsen
Jul 13 '14 at 12:05
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What did MongoDB not being ACID compliant before v4 really mean?
...d have no formal computer science background, so bear with me. I want to know the kinds of real world negative things that can happen if you use an old MongoDB version prior to v4 , which were not ACID compliant. This applies to any ACID noncompliant database.
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