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What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and
...lds by numbers, and it is never an error at the library level if there are extra fields, and missing fields are not an error if they are marked optional or explicit. Thus all protocol buffers messages have EXTENSIBILITY IMPLIED.
– Kevin Cathcart
Apr 10 '12 at 1...
What does “not run” mean in R help pages?
...run{} for text that should only be shown, but not run, and \dontshow{} for extra commands for testing that should not be shown to users, but will be run by example()
When you build a package then all code in \dontrun{} closure is visible in help as
## Not run:
...
## End(**Not run**)
edit: Thi...
Ruby max integer
...
@Matthias An extra bit is used to mark the value as an integer (as opposed to a pointer to an object).
– Matthew Crumley
Mar 8 '12 at 18:53
...
How to use sed to replace only the first occurrence in a file?
...o' with 'bar' in the first matching line only.
Due to use of ANSI C-quoted strings ($'...') to provide the sample input lines, bash, ksh, or zsh is assumed as the shell.
GNU sed only:
Ben Hoffstein's anwswer shows us that GNU provides an extension to the POSIX specification for sed that allows th...
What's the purpose of using braces (i.e. {}) for a single-line if or loop?
...d) (b*b) - ((4*a)*c)?
Some precedences are obvious (or should be), and the extra parentheses
just add to confusion. (On the other hand, you _should_ use the
parentheses in less obvious cases, even if you know that they're not
needed.)
Sort of. There are two wide spread conventions for formatting...
How can I plot with 2 different y-axes?
...otrix package automates this process, as does doubleYScale() in the latticeExtra package.
Another example (adapted from an R mailing list post by Robert W. Baer):
## set up some fake test data
time <- seq(0,72,12)
betagal.abs <- c(0.05,0.18,0.25,0.31,0.32,0.34,0.35)
cell.density <- c(0,10...
android get all contacts
...get all the names of the contacts in my Android and put them into array of strings?
8 Answers
...
How to send commands when opening a tmux session inside another tmux session?
...It works for me with 1.7, 1.6, and 1.5. You will definitely need to add an extra level of quoting if you are making the binding from a shell command (i.e. tmux bind-key -n 'C-\' send-prefix); if you are having problems getting it to work from ~/.tmux.conf (or a Prefix : command line), then you might...
Error handling in Bash
...IFS='
'
#
# Substring: I keep only the carriage return
# (others needed only for tabbing purpose)
IFS=${IFS:0:1}
local lines=( $_backtrace )
IFS=$mem
...
Database development mistakes made by application developers [closed]
...ese cases and creates more overhead in your queries as you must include an extra join. I would say that it is safer to say that you probably ought to use a surrogate for user-specific data (thus, not countries, currencies and US States).
– Thomas
Aug 2 '10 at 1...