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How can I convert byte size into a human-readable format in Java?
...al snippet posted here was the most copied Java snippet of all time on Stack Overflow, and it was flawed. It was fixed, but it got messy.
Full story in this article: The most copied Stack Overflow snippet of all time is flawed!
Source: Formatting byte size to human readable format | Programming.Gui...
How to find keys of a hash?
I know in javascript Objects double as hashes but i have been unable to find a built in function to get the keys
9 Answers...
How do I sort a dictionary by value?
...ring field and a numeric field. The string field is unique, so that is the key of the dictionary.
34 Answers
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Didn't Java once have a Pair class? [duplicate]
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There is no Pair in the standard framework, but the Apache Commons Lang, which comes quite close to “standard”, has a Pair.
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What's the opposite of head? I want all but the first N lines of a file
Given a text file of unknown length, how can I read, for example all but the first 2 lines of the file? I know tail will give me the last N lines, but I don't know what N is ahead of time.
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How do I deal with certificates using cURL while trying to access an HTTPS url?
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This error is related to a missing package: ca-certificates. Install it.
In Ubuntu Linux (and similar distro):
# apt-get install ca-certificates
In CygWin via Apt-Cyg
# apt-cyg install ca-certificates
In Arch Linux (Raspberry Pi)
# pacman -S ca-certificat...
How to get number of entries in a Lua table?
Sounds like a "let me google it for you" question, but somehow I can't find an answer. The Lua # operator only counts entries with integer keys, and so does table.getn :
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Define all functions in one .R file, call them from another .R file. How, if possible?
... by source("xyz.R") (assuming that both these files are in your current working directory.
If abc.R is:
fooABC <- function(x) {
k <- x+1
return(k)
}
and xyz.R is:
fooXYZ <- function(x) {
k <- fooABC(x)+1
return(k)
}
then this will work:
> source("abc.R")
> s...
How do I clear/delete the current line in terminal?
...m using terminal and typing in a line of text for a command, is there a hotkey or any way to clear/delete that line?
14 Ans...
Simultaneously merge multiple data.frames in a list
...differs in terms of the number of rows and columns, but they all share the key variables (which I've called "var1" and "var2" in the code below). If the data.frames were identical in terms of columns, I could merely rbind , for which plyr's rbind.fill would do the job, but that's not the case...