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Determine if running on a rooted device
...e().exec(new String[] { "/system/xbin/which", "su" });
BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
if (in.readLine() != null) return true;
return false;
} catch (Throwable t) {
return false;
...
Convert Time from one time zone to another in Rails
...ould never, ever do that because Time.zone stores the information in the thread, and it will probably leak to the next request handled by that thread.
Instead you should use an around_filter to make sure that the Time.zone is reset after the request is complete. Something like:
around_filter :set_...
How can I iterate through the unicode codepoints of a Java String?
... more expensive than Jonathan Feinbergs's solution, but they are faster to read/write and the performance difference will usually be insignificant.
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How do I get the resource id of an image if I know its name?
...fails to find the Resource ID. Be sure to recover properly in production.
Read this
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Which characters are valid/invalid in a JSON key name?
... from the horse's mouth, though, at json.org. It takes about one minute to read the entire spec end-to-end.
– Marcelo Cantos
Dec 30 '11 at 4:21
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Label points in geom_point
... geom_text_repel() functions.
library(ggplot2)
library(ggrepel)
nba <- read.csv("http://datasets.flowingdata.com/ppg2008.csv", sep = ",")
nbaplot <- ggplot(nba, aes(x= MIN, y = PTS)) +
geom_point(color = "blue", size = 3)
### geom_label_repel
nbaplot +
geom_label_repel(aes(label = Nam...
Match whitespace but not newlines
...e technique. A footnote in the “Whitespace” section of perlrecharclass reads
Prior to Perl v5.18, \s did not match the vertical tab. [^\S\cK] (obscurely) matches what \s traditionally did.
The same section of perlrecharclass also suggests other approaches that won’t offend language teach...
AutoMapper vs ValueInjecter [closed]
Everytime I'm looking for AutoMapper stuff on StackOverflow, I'm reading something about ValueInjecter .
4 Answers
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How to bind an enum to a combobox control in WPF?
...ace:Motion.VideoEffects"
Guide how to map namespace and assembly you can read on MSDN.
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Implement paging (skip / take) functionality with this query
...and a little bit about how to implement custom paging in SQL, for instance reading articles like this one .
6 Answers
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