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How can I calculate the difference between two dates?
... @RalucaGurau: 86400 is the number of seconds in a day (i.e. 60 seconds, times 60 minuts, times 24 hours). It has nothing to so with the month.
– dreamlax
May 14 '12 at 18:50
...
Cleaning `Inf` values from an R dataframe
...nd,lapply(dat, is.infinite)))
# user system elapsed
# 1.22 0.38 1.60
# data.table (@mnel)
system.time(invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(DT[[.name]])), j = .name,value =NA))))
# user system elapsed
# 0.29 0.02 0.31
data.table is the quickest. ...
How can I pair socks from a pile efficiently?
...ense to use the resolution power of man's eye/brain for a set as small as ~60 socks.
– drug_user841417
Jan 20 '13 at 18:27
14
...
Correct way to delete cookies server-side
...kie("name", value, "/", null, Cookie.DEFAULT_VERSION,null, maxAgeInMinutes*60, expiry, false, false);
return newCookie;
}
And use it the common way to set cookie:
NewCookie domainNewCookie = RsCookieHelper.createDomainCookie(token, 60);
Response res = Response.status(Response.Status.OK).cook...
How to initialize a two-dimensional array in Python?
...
Mike GrahamMike Graham
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Difference between SurfaceView and View?
...rstand VSYNC is to consider it is as a timer that fire up every 16ms for a 60fps screen. In Android, all the normal view update (and display actually but I won't talk it today), is synchronized with VSYNC to achieve better smoothness. Now,back to the surfaceView, you can render it anytime as you wis...
How to change facet labels?
...ch of the default values:
hum.names <- as_labeller(c(`50` = "RH% 50", `60` = "RH% 60",`70` = "RH% 70", `80` = "RH% 80",`90` = "RH% 90", `100` = "RH% 100")) #Necesarry to put RH% into the facet labels
2) We add into the GGplot:
ggplot(dataframe, aes(x=Temperature.C,y=fit))+geom_line()+ facet_w...
Is SHA-1 secure for password storage?
... "better" hash function, e.g. SHA-256, even if you truncate its output to 160 or 128 bits (to save on storage cost). Some of the SHA-3 round-2 candidates appear to be faster than SHA-1 while being arguably "more secure"; yet they are still a bit new, so sticking to SHA-256 or SHA-512 would be a safe...
Does a favicon have to be 32x32 or 16x16?
...t sidebar
48 x 48 – Windows site
57 x 57 – iPod touch, iPhone up to 3G
60 x 60 – iPhone touch up to iOS7
64 x 64 – Windows site, Safari Reader List sidebar in HiDPI/Retina
70 x 70 – Win 8.1 Metro tile
72 x 72 – iPad touch up to iOS6
76 x 76 – iOS7
96 x 96 – GoogleTV
114 x 114 – iPh...
How do I deploy Node.js applications as a single executable file? [duplicate]
...
60
Meanwhile I have found the (for me) perfect solution: nexe, which creates a single executable f...