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What do REFRESH and MERGE mean in terms of databases?
...refreshed.
MERGE means something complex that approximates "save" but is more like "push this detached entity back into managed status and save its state changes"; the cascading means that all associated entities get pushed back the same way, and the managed-entity handle you get back from .merge()...
Possible to access the index in a Hash each loop?
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Thanks @S.Mark, @rampion, that worked. I didn't see each_with_index listed in the RDoc for Hash: ruby-doc.org/core/classes/Hash.html. Now I see that it's a member of Enumerable. But too bad that RDoc can't cross reference each_with_index from Hash.html.
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Counting the occurrences / frequency of array elements
...ber of times each element occurs. However, I'm open to suggestions on the format of the output.
36 Answers
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What's the difference between io.sockets.emit and broadcast?
...n verify this is indeed the behaviour, but I cannot see any documentation for socket.broadcast nor socket.broadcast.emit in the Github docs nor on the Socket.io website. Am I missing something? (and the wiki has gone)
– scipilot
Apr 26 '15 at 1:13
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Ternary Operator Similar To ?:
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We can combine How to define a ternary operator in Scala which preserves leading tokens? with the answer to Is Option wrapping a value a good pattern? to get
scala> "Hi".getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x}
res0: String = String
sca...
Best way to hide a window from the Alt-Tab program switcher?
I've been a .NET developer for several years now and this is still one of those things I don't know how to do properly. It's easy to hide a window from the taskbar via a property in both Windows Forms and WPF, but as far as I can tell, this doesn't guarantee (or necessarily even affect) it being hid...
How to implement a secure REST API with node.js
...nning a REST API with node.js ,express and mongodb. The API provides data for a website (public and private area) and maybe later a mobile app. The frontend will be developed with AngularJS.
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“Add unimplemented methods” feature in the Android Studio
...plement) all of the required methods of the particular class. I'm looking for this feature in the Android Studio IDE, but without success so far. Is there something similar? For me it is one of the key-features and can't live without.
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Advantages to Using Private Static Methods
...lication, that don't require the use of any instance fields, are there performance or memory advantages to declaring the method as static?
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Why is GHC so large/big?
...h GHC you have to decide up front whether you're going to link dynamically or not. And we need more changes (e.g. to Cabal and the package system, amongst other things) before this is really practical.
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