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Float vs Decimal in ActiveRecord
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I remember my CompSci professor saying never to use floats for currency.
The reason for that is how the IEEE specification defines floats in binary format. Basically, it stores sign, fraction and exponent to represent a Float. It's like ...
ElasticSearch - Return Unique Values
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How do I tell Matplotlib to create a second (new) plot, then later plot on the old one?
I want to plot data, then create a new figure and plot data2, and finally come back to the original plot and plot data3, kinda like this:
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Using Mockito's generic “any()” method
...he argument-less any method and the type argument will get inferred by the compiler:
verify(bar).doStuff(any());
Explanation
The new thing in Java 8 is that the target type of an expression will be used to infer type parameters of its sub-expressions. Before Java 8 only arguments to methods wh...
In OS X Lion, LANG is not set to UTF-8, how to fix it?
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Difference between await and ContinueWith
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In the second code, you're synchronously waiting for the continuation to complete. In the first version, the method will return to the caller as soon as it hits the first await expression which isn't already completed.
They're very similar in that they both schedule a continuation, but as soon as...
If I revoke an existing distribution certificate, will it mess up anything with existing apps?
...till hesitant.
About Enterprise Developer accounts:
With thanks to Mike's comment
An App store app gets resigned with an Apple certificate when it goes on the store. Revoking the cert in the provisioning portal therefore won't affect it. Enterprise apps use the original certificate, which means re...
Why main does not return 0 here?
...ore the closing }. It's harmless and makes your program portable to older compilers.
– Keith Thompson
Dec 30 '11 at 8:46
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How to correctly use “section” tag in HTML5?
...ltipage/sections.html#the-section-element
Also see:
http://html5doctor.com/the-section-element/
http://www.impressivewebs.com/html5-section/
It looks like there's been a lot of confusion about this element's purpose, but the one thing that's agreed upon is that it is not a generic wrapper, lik...
How to access a preexisting collection with Mongoose?
... many hours figuring out this issue, the document is found here mongoosejs.com/docs/guide.html#collection
– ElvinD
Sep 16 '15 at 6:50
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