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Return multiple values in JavaScript?
...he latest ECMAScript 6 syntax*, you can also destructure the return value more intuitively:
const [first, second] = getValues();
If you want to put "labels" on each of the returned values (easier to maintain), you can return an object:
function getValues() {
return {
first: getFirstV...
Get checkbox value in jQuery
...bute you can do something like this:
$("input[type='checkbox']").val();
Or if you have set a class or id for it, you can:
$('#check_id').val();
$('.check_class').val();
However this will return the same value whether it is checked or not, this can be confusing as it is different to the submitt...
Mongoose's find method with $or condition does not work properly
...am' as ObjectId type. To avoid exception,
// the 'param' must consist of more than 12 characters.
User.find( { $or:[ {'_id':objId}, {'name':param}, {'nickname':param} ]},
function(err,docs){
if(!err) res.send(docs);
});
...
Which UUID version to use?
...at each version entails, but I am having trouble figuring out what's best for what applications.
4 Answers
...
C Macro definition to determine big endian or little endian machine?
...
Code supporting arbitrary byte orders, ready to be put into a file called order32.h:
#ifndef ORDER32_H
#define ORDER32_H
#include <limits.h>
#include <stdint.h>
#if CHAR_BIT != 8
#error "unsupported char size"
#endif
e...
What is a patch in git version control?
...mmunicate and apply to another repo)
(picture from the 2008 blog post "Bioruby with git: how would that work?", published by Jan AERTS)
See also Contributing to Rails with Git as another concrete example.
Nowadays, the GitHub pull request makes it really easy to apply patches on GitHub repos, wh...
Enabling WiFi on Android Emulator
How to enable WiFi on Android emulator? I have tried to find this but everyone is confusing WiFi with 3G.
6 Answers
...
Bash ignoring error for a particular command
...ever printed.
Also, I want to add that when pipefail is on,
it is enough for shell to think that the entire pipe has non-zero exit code
when one of commands in the pipe has non-zero exit code (with pipefail off it must the last one).
$ set -o pipefail
$ false | true ; echo $?
1
$ set +o pipefail
$...
In Python how should I test if a variable is None, True or False
...ulate(open("myfile"))
except SimulationException as sim_exc:
print "error parsing stream", sim_exc
else:
if result:
print "result pass"
else:
print "result fail"
# execution continues from here, regardless of exception or not
And now you can have a much richer type of ...
What is the best way to compute trending topics or tags?
...ny sites offer some statistics like "The hottest topics in the last 24h". For example, Topix.com shows this in its section "News Trends". There, you can see the topics which have the fastest growing number of mentions.
...