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How to use SCNetworkReachability in Swift
... (isReachable && !needsConnection)
}
Explanations:
As of Swift 1.2 (Xcode 6.3), imported C structs have a default initializer in Swift, which initializes all of the struct's fields to zero, so the socket address structure can be initialized with
var zeroAddress = sockaddr_in()
sizeofVa...
NSRange to Range
... }
// ...
}
(Older answers for Swift 3 and earlier:)
As of Swift 1.2, String.Index has an initializer
init?(_ utf16Index: UTF16Index, within characters: String)
which can be used to convert NSRange to Range<String.Index> correctly
(including all cases of Emojis, Regional Indicator...
round() for float in C++
...dard (closest publicly available draft standard to C++03 is N1804) section 1.2 Normative references:
The library described in clause 7 of ISO/IEC 9899:1990 and clause 7 of
ISO/IEC 9899/Amd.1:1995 is hereinafter called the Standard C
Library.1)
If we go to the C documentation for round, lro...
How to plot two histograms together in R?
...eaks, plot = F)$density %>% max
den_max <- max(den2_max, den1_max)*1.2
var1 %>% hist0(xlim = c(min0 , max0) , breaks = breaks,
freq = F, col = colh[1], ylim = c(0, den_max), main = main0,border=border,...)
var2 %>% hist0(xlim = c(min0 , max0), breaks = breaks,
...
How can we make xkcd style graphs?
..., size=1, position="jitter")+
geom_text(family="Humor Sans", x=6, y=-1.2, label="A SIN AND COS CURVE")+
geom_line(aes(y=xaxis), position = position_jitter(h = 0.005), colour="black")+
scale_x_continuous(breaks=c(2, 5, 6, 9),
labels = c("YARD", "STEPS", "DOOR", "INSIDE"))+lab...
Check if a value is within a range of numbers
....inRange(4, 2);
// => false
_.inRange(2, 2);
// => false
_.inRange(1.2, 2);
// => true
_.inRange(5.2, 4);
// => false
_.inRange(-3, -2, -6);
// => true
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How to initialize log4j properly?
...es)
More information is available here: https://logging.apache.org/log4j/1.2/manual.html
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How to change line width in ggplot?
...opinion. One can also use decimal numbers to fine tune the width (say size=1.2).
– Ricardo
Dec 29 '16 at 19:03
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How to set the maximum memory usage for JVM?
...
uhu. so I set -Xmx524M and the process takes up 1.2 GB of RAM. (?)
– phil294
Mar 19 '17 at 17:40
7
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Android 4.3 Bluetooth Low Energy unstable
...e implementation. nrf8002 devices require pairing and the Samsung 2.0 and 1.2 API's both supported this. It seems like the official api support is having problems with the pairing aspect as after I pair a ble device, it seems impossible to unpair!
– Chris Herbert
...