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What's the best way of structuring data on firebase?
...No biggie if none of those things number in thousands. But a big deal for 10k users with upwards of 5k messages each.
So now the optimal strategy for a hierarchical, real-time structure becomes more obvious:
/user_meta/uid/email
/messages/uid/...
/widgets/uid/...
An additional tool which is extr...
Converting a string to a date in JavaScript
...omputations as UTC.
To parse a date as UTC, append a Z - e.g.: new Date('2011-04-11T10:20:30Z').
To display a date in UTC, use .toUTCString(),
to display a date in user's local time, use .toString().
More info on MDN | Date and this answer.
For old Internet Explorer compatibility (IE versions le...
What is a tracking branch?
... |
edited May 8 at 19:50
community wiki
6 re...
Confusion: @NotNull vs. @Column(nullable = false) with JPA and Hibernate
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330
@NotNull is a JSR 303 Bean Validation annotation. It has nothing to do with database constraints...
Test if remote TCP port is open from a shell script
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460
As pointed by B. Rhodes, nc (netcat) will do the job. A more compact way to use it:
nc -z <ho...
javascript toISOString() ignores timezone offset [duplicate]
...llowing works as well:
var tzoffset = (new Date()).getTimezoneOffset() * 60000; //offset in milliseconds
var localISOTime = (new Date(Date.now() - tzoffset)).toISOString().slice(0, -1);
// => '2015-01-26T06:40:36.181'
The slice(0, -1) gets rid of the trailing Z which represents Zulu timezone a...
What is Castle Windsor, and why should I care?
...g cut my teeth on win32 and early COM. I've been working with .NET since 2001, so I'm pretty fluent in C# and the CLR. I'd never heard of Castle Windsor until I started participating in Stack Overflow. I've read the Castle Windsor "Getting Started" guide, but it's not clicking.
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Inner text shadow with CSS
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105
Here's a little trick I discovered using the :before and :after pseudo-elements:
.depth {
...
PowerShell: Store Entire Text File Contents in Variable
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answered Nov 2 '11 at 7:01
manojldsmanojlds
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Difference between Pragma and Cache-Control headers?
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Pragma is the HTTP/1.0 implementation and cache-control is the HTTP/1.1 implementation of the same concept. They both are meant to prevent the client from caching the response. Older clients may not support HTTP/1.1 which is why that header is st...