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mongo group query how to keep fields
...$first: '$age' }, // retain remaining field
count: { $sum: 1 } // count based on your group
},
{
$project:{
name:"$_id.name",
age: "$age",
count: "$count",
_id:0
}
}])
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Should accessing SharedPreferences be done off the UI Thread?
... to sample code for using apply(from gingerbread onwards) or commit(froyo) based on the android version for storing sharedpreferences : [conditionally use apply or commit] (code.google.com/p/zippy-android/source/browse/trunk/examples/…)
– tony m
May 18 '13 a...
Android Min SDK Version vs. Target SDK Version
...ements) without need for any testing (per se) as long as I restrict my codebase to use only API's available in my minSdkVersion?
– Damilola Olowookere
Apr 15 '17 at 0:37
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Android Use Done button on Keyboard to click button
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Kotlin Solution
The base way to handle the done action in Kotlin is:
edittext.setOnEditorActionListener { _, actionId, _ ->
if (actionId == EditorInfo.IME_ACTION_DONE) {
// Call your code here
true
}
false
}
Kot...
Why do we use __init__ in Python classes?
...nd inherit some abstract characteristics and behavior from the human type (base-class) : that's inheritance. So all Humans can laugh and drink, therefore all child-classes can also! Inheritance (2).
But because they are all of the same kind (Type/base-class : Humans) you can exchange them sometimes...
Text vertical alignment in WPF TextBlock
... +1 Doesn't even need to set the Height for the Grid, as with the Border-based approach.
– Efran Cobisi
Jul 21 '12 at 15:22
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Android: disabling highlight on listView click
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Essentially, you have a selector that specifies different style elements based on the current state.
see this for short and quick solution https://stackoverflow.com/a/12242564/185022
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How to remove a field completely from a MongoDB document?
...ch worse, but this way you can change the field with any custom code (even based on another field from this document).
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append new row to old csv file python
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Based in the answer of @G M and paying attention to the @John La Rooy's warning, I was able to append a new row opening the file in 'a'mode.
Even in windows, in order to avoid the newline problem, you must declare it as n...
Is there an online name demangler for C++? [closed]
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This might be a bit late, but I created one, based on this question. It works with the inputs I tried on, supports g++ and msvc++ via __cxa_demangle and __unDName, compiled to Javascript via Emscripten. Hope this helps someone: c++filtjs
Edit: Fixed escaping problem
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