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What is ?= in Makefile
What is the meaning of ?= ?
2 Answers
2
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How to use custom packages
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@Kiril, you mean, how do you import mylib in the code of myproject2? Then the answer is "by using import "myproject/mylib" -- the idea is that Go searches for imported paths under each directory it extracts from the GOPATH environment va...
jQuery/JavaScript: accessing contents of an iframe
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In this case, he means use the http server that is serving your domain's page as the proxy - request the content from the 3rd party site and forward it on in the http response to the client. As you can probably guess, it quickly impacts the r...
When would you use a WeakHashMap or a WeakReference?
...nerImpl);
If the manager stores your listener with a WeakReference, that means you don't need to remove the register e.g. with a manager.removeListener(myListenerImpl) because it will be automatically removed once your listener or your component holding the listener becomes unavailable.
Of course...
JPA eager fetch does not join
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@JoshuaDavis What I mean is that the \@Fetch annotation doesn't apply any kind of JOIN optimisation in the queries, wheter JPQL or em.find(), I just had another try on Hibernate 5.2.+ and it's still the same
– Aphax
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Razor view engine, how to enter preprocessor(#if debug)
... in to HttpContext:
@if (HttpContext.Current.IsDebuggingEnabled)
{
// Means that debug="true" in Web.config
}
IMO, this makes more sense than conditional compilation for views and comes in handy for some testing scenarios. (See Tony Wall's comment below.)
Side note: NullReferenceException ...
What is a Context Free Grammar?
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By 'not regular', do you mean 'not context-free'? (because the language representable by CFGs is a super-set of those representable by regular expressions)
– Anti Earth
Nov 3 '13 at 1:33
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What does .SD stand for in data.table in R
... variables are available in j, too, and are length 1. by=list(x,y,z) would mean x,y and z are available to j. For generic access they're wrapped up in .BY too. FAQ 2.10 has some history on it, but some clarity could be added to ?data.table. Great, docu help would be very welcome. Even better if you'...
How do I check in SQLite whether a table exists?
...nting the number of times the TABLE appears in sqlite schema. A count of 0 means the table doesn't exist. A count of 1 means the table does exist. These are the only two expected values of count.
– Stephen Quan
Jan 23 '14 at 23:55
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Searching for UUIDs in text with regex
... @cyber-monk: [0-9a-f] is identical to [a-f0-9] and [0123456789abcdef] in meaning and in speed, since the regex is turned into a state machine anyway, with each hex digit turned into an entry in a state-table. For an entry point into how this works, see en.wikipedia.org/wiki/Nondeterministic_finite...