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Comparing boxed Long values 127 and 128
...bject comparisons.
Reference links:
https://today.java.net/pub/a/today/2005/03/24/autoboxing.html
https://blogs.oracle.com/darcy/entry/boxing_and_caches_integer_valueof
http://java.dzone.com/articles/surprising-results-autoboxing
...
How to add a changed file to an older (not last) commit in Git
...se git stash to store the changes you want to add.
Use git rebase -i HEAD~10 (or however many commits back you want to see).
Mark the commit in question (a0865...) for edit by changing the word pick at the start of the line into edit. Don't delete the other lines as that would delete the commits.[^v...
Unresolved specs during Gem::Specification.reset:
...s when running 'gem cleanup' so I found this: stackoverflow.com/questions/4007074/… Turns out it had to do with RVM. When I ran 'rvm gemset use global' and ran guard, the errors went away.
– reneruiz
Aug 8 '13 at 18:54
...
Private vs Public in Cache-Control
... |
edited Aug 16 '10 at 11:33
answered Aug 16 '10 at 10:51
...
Geometric Mean: is there a built-in?
...ositive values.
gm_mean = function(x, na.rm=TRUE){
exp(sum(log(x[x > 0]), na.rm=na.rm) / length(x))
}
Thanks to @ben-bolker for noting the na.rm pass-through and @Gregor for making sure it works correctly.
I think some of the comments are related to a false-equivalency of NA values in the d...
How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
...
answered Sep 30 '13 at 19:44
AlvaroAlvaro
9,54377 gold badges3333 silver badges5353 bronze badges
...
Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
...ibe what worked for me below.
SOLUTION:
On the host (I'm using Ubuntu 16.04), find out the primary and secondary DNS server addresses:
$ nmcli dev show | grep 'IP4.DNS'
IP4.DNS[1]: 10.0.0.2
IP4.DNS[2]: 10.0.0.3
Using these addresses, create a file /etc/docker/daemon.js...
Does the Go language have function/method overloading?
...the types was a major simplifying decision in Go's type system.
Update: 2016-04-07
While Go still does not have overloaded functions (and probably never will), the most useful feature of overloading, that of calling a function with optional arguments and inferring defaults for those omitted can b...
How to check if a file contains a specific string using Bash
...n't need the string displayed when it was found.
The grep command returns 0 or 1 in the exit code depending on
the result of search. 0 if something was found; 1 otherwise.
$ echo hello | grep hi ; echo $?
1
$ echo hello | grep he ; echo $?
hello
0
$ echo hello | grep -q he ; echo $?
0
You can sp...