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Difference between initLoader and restartLoader in LoaderManager

...ft unchanged and any previous callbacks replaced with the newly provided ones. If there is not currently a Loader for the ID, a new one is created and started. This function should generally be used when a component is initializing, to ensure that a Loader it relies on is created. This ...
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SQL join: selecting the last records in a one-to-many relationship

...ve a table of customers and a table of purchases. Each purchase belongs to one customer. I want to get a list of all customers along with their last purchase in one SELECT statement. What is the best practice? Any advice on building indexes? ...
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How to determine if binary tree is balanced?

...e: suppose the tree is massively unbalanced. Like, a million nodes deep on one side and three deep on the other. Is there a scenario in which this algorithm blows the stack? Can you fix the implementation so that it never blows the stack, even when given a massively unbalanced tree? UPDATE: Donal F...
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:: (double colon) operator in Java 8

... Usually, one would call the reduce method using Math.max(int, int) as follows: reduce(new IntBinaryOperator() { int applyAsInt(int left, int right) { return Math.max(left, right); } }); That requires a lot of syntax...
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+ operator for array in PHP?

...ts from the right-hand array will be ignored. So if you do $array1 = ['one', 'two', 'foo' => 'bar']; $array2 = ['three', 'four', 'five', 'foo' => 'baz']; print_r($array1 + $array2); You will get Array ( [0] => one // preserved from $array1 (left-hand array) [1]...
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Code block in numbered list (Wiki syntax)

... You could try the following wiki syntax, it works for me on 1.17 # one #:<pre> #::some stuff #::some more stuff</pre> # two It is not perfect, because you end up with a more indent but it does allow one to use the wiki syntax for correctly formatted pre blocks over multiple lin...
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jQuery: more than one handler for same event

...Both handlers will run, the jQuery event model allows multiple handlers on one element, therefore a later handler does not override an older handler. The handlers will execute in the order in which they were bound. share ...
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How to use Git and Dropbox together effectively?

...s great. I use it all the time. I have multiple computers (two at home and one at work) on which I use Dropbox as a central bare repository. Since I don’t want to host it on a public service, and I don’t have access to a server that I can always SSH to, Dropbox takes care of this by syncing in t...
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PHP append one array to another (not array_push or +)

How to append one array to another without comparing their keys? 12 Answers 12 ...
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Hidden features of Eclipse [closed]

...he commands listed here. I took time to figure this out. It might help someone. – 500865 Oct 23 '11 at 3:27 ...