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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
I have a UIImage (Cocoa Touch). From that, I'm happy to get a CGImage or anything else you'd like that's available. I'd like to write this function:
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Backbone View: Inherit and extend events from parent
... That's great... Maybe you could update this to show how you would inherit from a ChildView (check if the prototype events is a function or object)... Or maybe I'm overthinking this whole inheritance stuff.
– brent
Feb 22 '12 at 22:06
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Setting a system environment variable from a Windows batch file?
Is it possible to set a environment variable at the system level from a command prompt in Windows 7 (or even XP for that matter). I am running from an elevated command prompt.
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How to jump from Intellij terminal to editor with shortcut
I know that you can jump from almost all windows in Intellij IDEA to the editor window with Esc . In Intellij's terminal window, this does not work. Does anyone know how to do this with a keyboard shortcut? This would be nice since I can jump from my editor to the terminal with Alt + F12 but I ca...
How to obtain the number of CPUs/cores in Linux from the command line?
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@CiroSantilli六四事件法轮功纳米比亚威视 From github.com/gstrauss/plasma/blob/master/plasma_sysconf.c it looks like I was wrong: it's only optional. "sysconf _SC_NPROCESSORS_ONLN and _SC_NPROCESSORS_CONF are not required by standards, but are provided on numerous un...
Bash: infinite sleep (infinite blocking)
... documented in a separate answer. To summarize: infinity is converted in C from "string" to a double. Then that double is truncated to the maximum values allowed timespec, which means a very large amount of seconds (architecture-dependant) but, in theory, finite.
– jp48
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Best way to load module/class from lib folder in Rails 3?
Since the latest Rails 3 release is not auto-loading modules and classes from lib anymore,
what would be the best way to load them?
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How can I open several files at once in Vim?
Is there a way to open all the files in a directory from within Vim? So a :command that would say in effect "Open all the files under /some/path into buffers".
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Extracting numbers from vectors of strings
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Update
Since extract_numeric is deprecated, we can use parse_number from readr package.
library(readr)
parse_number(years)
Here is another option with extract_numeric
library(tidyr)
extract_numeric(years)
#[1] 20 1
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How to install packages using pip according to the requirements.txt file from a local directory?
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Information on --no-index from command pip help install --no-index Ignore package index (only looking at --find-links URLs instead). Information on --find-links from command pip help install -f, --find-links <url> If a url or path to an html f...