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How to override to_json in Rails?
...e creation of the json should be separate from the rendering of the json.
Now, anytime to_json is called on an object, as_json is invoked to create the data structure, and then that hash is encoded as a JSON string using ActiveSupport::json.encode. This happens for all types: object, numeric, date,...
Why are ToLookup and GroupBy different?
...different. Calling ToLookup means I want a cache of the entire thing right now organized by group. Calling GroupBy means "I am building an object to represent the question 'what would these things look like if I organized them by group?'"
...
Display open transactions in MySQL
...ut down and restarted between the first and second statements without you knowing it:
Also see: http://dev.mysql.com/doc/refman/5.0/en/auto-reconnect.html
How to diagnose and fix this
To check for auto-reconnection:
If an automatic reconnection does occur (for example, as a result of calli...
Backbone.View “el” confusion
...a pre-existing element with el: $("#someElementID") is your view probably knows more than it should, making it difficult to reuse it. see "Decouple view from DOM..." coenraets.org/blog/2012/01/…
– Scott Coates
May 4 '12 at 16:02
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Are Roslyn SyntaxNodes reused?
...nd re-parse only the portions of the tree that were affected by the edit.
Now when you try to put all five of those things into one data structure you immediately run into problems:
How do you build a node in the first place? The parent and the child both refer to each other, and are immutable, s...
How to get a index value from foreach loop in jstl
...
I need to know the index[location] of each element comes in the String Array.
– Java Questions
Sep 16 '13 at 11:10
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How to create default value for function argument in Clojure
...at would make it easier to rename the function in the future. Does anyone know any reason not to use recur in these situations?
– Rory O'Kane
Aug 9 '14 at 23:24
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Alarm Manager Example
...ontext.ALARM_SERVICE ));
// set alarm to fire 5 sec (1000*5) from now (SystemClock.elapsedRealtime())
manager.set( AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000*5, pintent );
}
Remember though that the AlarmManager fires even when your application ...
Using a strategy pattern and a command pattern
...iple systems without requiring the details of a specific invocation to be known before execution.
As is typical for design patterns, they do not require all implementations to be identical in detail to bear the pattern name. Details can vary in implementation and in what data is encoded in the obj...
Create Pandas DataFrame from a string
...ndas-docs/stable/api.html?highlight=compat so leaving the answer as is for now.
– Emil H
Dec 12 '17 at 6:04
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