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JavaScript closures vs. anonymous functions
A friend of mine and I are currently discussing what is a closure in JS and what isn't. We just want to make sure we really understand it correctly.
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PostgreSQL return result set as JSON array?
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TL;DR
SELECT json_agg(t) FROM t
for a JSON array of objects, and
SELECT
json_build_object(
'a', json_agg(t.a),
'b', json_agg(t.b)
)
FROM t
for a JSON object of arrays.
List of objects
This section describes how to generate a JSON array of objects, with eac...
Angular - ui-router get previous state
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Here 'to' and 'from' means 'toState' and 'fromState'. Consider your previous url is localhost:xxxx/employee and controller is 'EmployeesController' then the example for 'fromState' is : Object {url: "/employees", templateUrl: "/employe...
Unpacking, extended unpacking and nested extended unpacking
...lain with a few examples. Since you're talking about evaluating these "by hand," I'll suggest some simple substitution rules. Basically, you might find it easier to understand an expression if all the iterables are formatted in the same way.
For the purposes of unpacking only, the following substit...
Deploying website: 500 - Internal server error
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First, you need to enable and see detailed errors of your web messages, because this is a general message without giving information on what's really happening for security reasons.
With the detailed error, you can locate the real issue here.
Also, ...
How to reshape data from long to wide format
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+1 and you don't need to rely on external packages, since reshape comes with stats. Not to mention that it's faster! =)
– aL3xa
May 5 '11 at 0:07
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Getting full JS autocompletion under Sublime Text
I just installed the Sublime Text under Windows Vista, and even following the advice given in this post , namely to explicitly set View > Syntax > JavaScript > JavaScript , I only see suggestions based on what I have previously typed. I even installed the SublimeCodeIntel plug-in , to no...
How can I unit test a GUI?
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Designs like MVP and MVC typically try to abstract as much logic out of the actual GUI as possible. One very popular article about this is "The Humble Dialog Box" by Michael Feathers. Personally I've had mixed experiences with trying to move ...
A Java collection of value pairs? (tuples?)
...eft()) &&
this.right.equals(pairo.getRight());
}
}
And yes, this exists in multiple places on the Net, with varying degrees of completeness and feature. (My example above is intended to be immutable.)
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What's the difference between CENTER_INSIDE and FIT_CENTER scale types?
I can't tell the difference between ImageView.ScaleType.CENTER_INSIDE and ImageView.ScaleType.FIT_CENTER .
3 Answers
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