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Spring @PostConstruct vs. init-method attribute
... can specify the method that needs to be called as initialization method.
Now with introduction of JSR 250 specs in Java EE and spring support of these annotations , dependency on spring framework has been reduced to a certain extent.
But i have to admit that addition of these things increase the ...
How do I force Postgres to use a particular index?
...om_page_cost = 1;
EXPLAIN <query>; # May use index scan now
You can restore the default value with SET random_page_cost = DEFAULT; again.
Background
Index scans require non-sequential disk page fetches. Postgres uses random_page_cost to estimate the cost of such non-sequential...
Markdown vs markup - are they related?
I'm using markdown to edit this question right now. In some wikis I used wiki markup. Are they the same thing? Are they related? Please explain. If I want to implement one or the other in a web project (like stackoverflow) what do I need to use?
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What are the reasons why Map.get(Object key) is not (fully) generic
... Of course, uses where the compile time type was not a subclass of K would now fail to compile, but that doesn't invalidate the contract, since contracts implicitly discuss what happens if the code compiles.
– BeeOnRope
Jun 2 '16 at 23:09
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How to make a class conform to a protocol in Swift?
...s inherit from NSObject and conform to the UITableViewDataSource together. Now if you want to modify the functions in the protocol, you need to add keyword override before the function call, like this
class CustomDataSource : NSObject, UITableViewDataSource {
override func tableView(_ tableVie...
How to debug Visual Studio extensions
... extensions when built will register themselves in the experimental hive.
Now you can F5 and it will start Visual Studio with your VSIX as an available extension.
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Convert NSNumber to int in Objective-C
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Implicit conversion is now disallowed with ARC.
– Alexander
Nov 21 '17 at 12:52
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Calculate the median of a billion numbers
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Ah, my brain has just kicked into gear, I have a sensible suggestion now. Probably too late if this had been an interview, but never mind:
Machine 1 shall be called the "control machine", and for the sake of argument either it starts with all the data, and sends it in equal parcels to the oth...
Output array to CSV in Ruby
...file using CSV.table, did some manipulations, got rid of some columns, and now I want to spool the resulting Array of Hashes out again as CSV (really tab-delimited). How to? gist.github.com/4647196
– tamouse
Jan 27 '13 at 7:13
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How do I stop Entity Framework from trying to save/insert child objects?
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As far as I know, you have two options.
Option 1)
Null all the child objects, this will ensure EF not to add anything. It will also not delete anything from your database.
Option 2)
Set the child objects as detached from the context ...