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Mongoose's find method with $or condition does not work properly
...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);
});
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improv...
gulp globbing- how to watch everything below directory
... if a file does not have a 'period' in it, it will not match. Perhaps there_ought_ to be a special case for . as . via DIR on Windows matches 'LICENSE', but unfortunately ln *.* does not. Two different meanings to '.' is sad. * seems to do what we need. A . glob is probably never what the developer ...
Where are iOS simulator screenshots stored?
...e also end up on the Desktop as something like: "Screen Shot 2012-04-22 at _ AM.png"
If you use the Grab application (found in /Application/Utilities), you can save those files anywhere you decide. :-)
If you have saved a screenshot to the Photos library from within your app, for example with UIGet...
How to sum up elements of a C++ vector?
...
Actually there are quite a few methods.
int sum_of_elems = 0;
C++03
Classic for loop:
for(std::vector<int>::iterator it = vector.begin(); it != vector.end(); ++it)
sum_of_elems += *it;
Using a standard algorithm:
#include <numeric>
sum_of_elems...
Calculating how many minutes there are between two times
... Yes TotalMinutes is what i was looking for. Thank you very much ^_^
– Wahid Bitar
Mar 28 '16 at 19:34
...
How to enable C++11 in Qt Creator?
... that web page). It requires Qt 5.
The other answers, suggesting
QMAKE_CXXFLAGS += -std=c++11 (or QMAKE_CXXFLAGS += -std=c++0x)
also work with Qt 4.8 and gcc / clang.
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What SOAP client libraries exist for Python, and where is the documentation for them? [closed]
... an error that looks like:
abort: error: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
This was issue1424152 on the Python bug tracker. There are patches attached to the bug report that will fix this in Python 2.x and Python 3.x. The issue is already fixed.
...
Performance optimization strategies of last resort [closed]
... code, together taking over half the time:
/* IF ALL TASKS DONE, SEND ITC_ACKOP, AND DELETE OP */
if (ptop->current_task >= ILST_LENGTH(ptop->tasklist){
. . .
/* FOR EACH OPERATION REQUEST */
for ( ptop = ILST_FIRST(oplist); ptop != NULL; ptop = ILST_NEXT(oplist, ptop)){
. . .
/* GET CURR...
How can I remove a key and its value from an associative array?
...ample:
$array = array("key1" => "value1", "key2" => "value2");
print_r($array);
unset($array['key1']);
print_r($array);
unset($array['key2']);
print_r($array);
Output:
Array
(
[key1] => value1
[key2] => value2
)
Array
(
[key2] => value2
)
Array
(
)
...
Rails.env vs RAILS_ENV
...
According to the docs, #Rails.env wraps RAILS_ENV:
# File vendor/rails/railties/lib/initializer.rb, line 55
def env
@_env ||= ActiveSupport::StringInquirer.new(RAILS_ENV)
end
But, look at specifically how it's wrapped, using ActiveSupport::String...