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Understanding reference counting with Cocoa and Objective-C
...to have a look at Objective-C and Cocoa with a view to playing with the iPhone SDK. I'm reasonably comfortable with C's malloc and free concept, but Cocoa's references counting scheme has me rather confused. I'm told it's very elegant once you understand it, but I'm just not over the hump yet.
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How do I use PHP to get the current year?
...y of having to localize your application. If that's not an issue, pick the one you like best.
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What database does Google use?
... resources without any reconfiguration
each table has multiple dimensions (one of which is a field for time, allowing versioning)
tables are optimized for GFS (Google File System) by being split into multiple tablets - segments of the table as split along a row chosen such that the tablet will be ~2...
How to plot two histograms together in R?
...maybe the only thing you're missing is combining your two data frames into one long one.
So, let's start with something like what you have, two separate sets of data and combine them.
carrots <- data.frame(length = rnorm(100000, 6, 2))
cukes <- data.frame(length = rnorm(50000, 7, 2.5))
# No...
Abstraction VS Information Hiding VS Encapsulation
...an answer in its own right.
(All citations are taken from the article mentioned above.)
Abstraction:
"One point of confusion regarding abstraction is its use as both process and an entity. Abstraction, as a process, denotes the extracting of the essential details about an item, or a group of items,...
What happens to a detached thread when main() exits?
... to wait for detached threads to finish, and then call exit after the last one finishes.
– Jonathan Wakely
Apr 27 '18 at 11:51
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addEventListener vs onclick
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Both are correct, but none of them are "best" per se, and there may be a reason the developer chose to use both approaches.
Event Listeners (addEventListener and IE's attachEvent)
Earlier versions of Internet Explorer implement javascript differe...
Why implement interface explicitly?
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Yes exactly this is one case that EIMI solves. And other points are covered by "Michael B" answer.
– crypted
Nov 5 '10 at 4:20
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How to create a checkbox with a clickable label?
...he contents of the LABEL element. In this case, the LABEL may only contain one control element. The label itself may be positioned before or after the associated control.
Using this method has some advantages over for:
No need to assign an id to every checkbox (great!).
No need to use the extra a...
Select all 'tr' except the first one
...rs. There is no crossbrowser way of selecting the rows you want with CSS alone.
However, if you don't care about Internet Explorer 6, 7 or 8:
tr:not(:first-child) {
color: red;
}
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