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Explain ExtJS 4 event handling
...escribing DOM elements' event handling.
DOM node event handling
First of all you wouldn't want to work with DOM node directly. Instead you probably would want to utilize Ext.Element interface. For the purpose of assigning event handlers, Element.addListener and Element.on (these are equivalent) we...
Where is the list of predefined Maven properties
I know there is a list of all predefined Maven properties (you know like project.build.sourceEncoding , or project.build.sourceDirectory ). I once saw the list but I just can't find it again.
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MySQL foreign key constraints, cascade delete
...#2 (blue):
DELETE FROM categories WHERE (id = 2);
the DBMS will look at all the tables which have a foreign key pointing at the 'categories' table, and delete the records where the matching id is 2. Since we only defined the foreign key relationship in products_categories, you end up with this ta...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
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To add to Fryie's answer, you don't even need to load all of ActiveSupport; you can just include them then require "active_support/core_ext/hash/except"
– GMA
May 13 '16 at 7:33
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Is it correct to use JavaScript Array.sort() method for shuffling?
... ends up as a more complex (in terms of execution time) shuffle than you really need.
I prefer the shuffle algorithm which effectively partitions the collection into "shuffled" (at the start of the collection, initially empty) and "unshuffled" (the rest of the collection). At each step of the algori...
What is the difference between String.slice and String.substring?
... Feb 11 '10 at 10:36
Daniel VassalloDaniel Vassallo
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Is it possible to prevent an NSURLRequest from caching data or remove cached data following a reques
...e, I perform a HTTP request using NSURLRequest for a chunk of data. Object allocation spikes and I assign the data accordingly. When I finish with the data, I free it up accordingly - however instruments doesn't show any data to have been freed!
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cannot download, $GOPATH not set
I want to install json2csv using go get github.com/jehiah/json2csv but I receive this error:
15 Answers
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Does static constexpr variable inside a function make sense?
...n with static const integers.)
The C++ object model (§1.9) requires that all objects other than bit-fields occupy at least one byte of memory and have addresses; furthermore all such objects observable in a program at a given moment must have distinct addresses (paragraph 6). This does not quite r...
R script line numbers at error?
...ou the line number, but it will tell you where the failure happens in the call stack which is very helpful:
traceback()
[Edit:] When running a script from the command line you will have to skip one or two calls, see traceback() for interactive and non-interactive R sessions
I'm not aware of anot...