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mongo group query how to keep fields
...h group, you can try aggregating like:
db.test.aggregate({
$group: {
_id : '$name',
name : { $first: '$name' },
age : { $first: '$age' },
sex : { $first: '$sex' },
province : { $first: '$province' },
city : { $first: '$city' },
area : { $first: '$area' },
address : { $firs...
Decorators with parameters?
I have a problem with the transfer of variable 'insurance_mode' by the decorator. I would do it by the following decorator statement:
...
How to specify different Debug/Release output directories in QMake .pro file
...cpp \
src/dialogs.cpp
Release:DESTDIR = release
Release:OBJECTS_DIR = release/.obj
Release:MOC_DIR = release/.moc
Release:RCC_DIR = release/.rcc
Release:UI_DIR = release/.ui
Debug:DESTDIR = debug
Debug:OBJECTS_DIR = debug/.obj
Debug:MOC_DIR = debug/.moc
Debug:RCC_DIR = debug/.rcc
Debug:...
How does this giant regex work?
...more compact, equally evil remote access tool is described in details at
http://thegothicparty.com/dev/article/server-side-virus-rat/.
Unlike the doc.php backdoor, it is meant to be remote controlled.
Same hazards and methods of eradication apply.
...
How do you split and unsplit a window/view in Eclipse IDE?
...@TimothyDean note: those shortcuts might have changed since Dec. 2013: see comment 44 bugs.eclipse.org/bugs/show_bug.cgi?id=378298#c44.
– VonC
May 13 '14 at 14:12
2
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back button callback in navigationController in iOS
...elegate if it should pop the top UINavigationItem by calling navigationBar(_:shouldPop:). UINavigationController actually implement this, but it doesn't publicly declare that it adopts UINavigationBarDelegate (why!?). To intercept this event, create a subclass of UINavigationController, declare its ...
What is path of JDK on Mac ? [duplicate]
...u check out its help text (java_home -h), you'll see that you can use this command to reliably start a Java program on OS X (java_home --exec ...), with the ability to explicitly specify the desired Java version and architecture, or even request the user to install it if missing.
A more pedestrian ...
How to pattern match using regular expression in Scala?
...ter match {
case Pattern(c) => c bound to capture group here
case _ =>
}
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How to implement the --verbose or -v option into a script?
...unction (or if you're willing to use print as a function in 2.x using from __future__ import print_function) it's even simpler:
verboseprint = print if verbose else lambda *a, **k: None
This way, the function is defined as a do-nothing if verbose mode is off (using a lambda), instead of constantl...
Weird PHP error: 'Can't use function return value in write context'
...
You mean
if (isset($_POST['sms_code']) == TRUE ) {
though incidentally you really mean
if (isset($_POST['sms_code'])) {
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