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Quickly reading very large tables as dataframes
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# sqldf as on SO
f <- file("test.csv")
system.time(SQLf <- sqldf("select * from f", dbname = tempfile(), file.format = list(header = T, row.names = F)))
## user system elapsed
## 10.21 0.47 10.73
ff / ffdf
require(ff)
system.time(FFDF <- read.csv.ffdf(file="test.csv",nro...
Does JavaScript have the interface type (such as Java's 'interface')?
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What exactly is OAuth (Open Authorization)?
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Is it safe to shallow clone with --depth 1, create commits, and pull updates again?
...hallow fetch/clone too.
All the details are in "shallow.c: the 8 steps to select new commits for .git/shallow".
Update June 2015: Git 2.5 will even allow for fetching a single commit!
(Ultimate shallow case)
Update January 2016: Git 2.8 (Mach 2016) now documents officially the practice of getti...
How to change the Content of a with Javascript
...he textArea element.
Here's the MDN reference
value DOMString The raw value contained in the control.
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How to remove convexity defects in a Sudoku square?
...ask out) the background. For that, I use connected component analysis, and select the component that's got the largest convex area:
components =
ComponentMeasurements[
ColorNegate@Binarize[srcAdjusted], {"ConvexArea", "Mask"}][[All,
2]];
largestComponent = Image[SortBy[components, First...
Reference one string from another string in strings.xml?
...resources>
UPDATE:
You can even define your entity globaly e.g:
res/raw/entities.ent:
<!ENTITY appname "MyAppName">
<!ENTITY author "MrGreen">
res/values/string.xml:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE resources [
<!ENTITY % ents SYSTEM "./res/raw/...
How can I determine if a date is between two dates in Java? [duplicate]
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Is this better than the "selected solved answer"?
– Christian Moen
Jan 21 '17 at 23:01
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How to explore web-based Google Play in another country?
... Download Link Here From Cnet You can change around the settings a bit and select routing servers to go through only certain countries. The official website has some more documentation on this.
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How to make a background 20% transparent on Android
...egant solution. I'm able to apply this to a list item background when I'm selecting it - so I get some color, but it doesn't compete with the item text.. Very cool, thanks!
– Gene Bo
Mar 25 '15 at 18:54
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