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LINQ Single vs First
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Apr 27 '10 at 19:13
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Is there a performance difference between i++ and ++i in C?
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406
Executive summary: No.
i++ could potentially be slower than ++i, since the old value of i
mig...
Java: Get month Integer from Date
...ary to cal.get(Calendar.MONTH) in adarshr's answer which gives values from 0 to 11.
But as Basil Bourque said in the comments, the preferred way is to get a Month enum object with the LocalDate::getMonth method.
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What exactly is a reentrant function?
...t, everything seems ok… But wait:
int main()
{
foo(bar);
return 0;
}
If the lock on mutex is not recursive, then here's what will happen, in the main thread:
main will call foo.
foo will acquire the lock.
foo will call bar, which will call foo.
the 2nd foo will try to acquire the lock...
Remove scrollbar from iframe
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answered Apr 10 '12 at 2:01
takientakien
93877 silver badges1111 bronze badges
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JSON serialization of Google App Engine models
...h (JS "new Date()").
ms = time.mktime(value.utctimetuple()) * 1000
ms += getattr(value, 'microseconds', 0) / 1000
output[key] = int(ms)
elif isinstance(value, db.GeoPt):
output[key] = {'lat': value.lat, 'lon': value.lon}
elif isinstance...
Check if a row exists, otherwise insert
... things can overbook a flight, as it will insert a new row when there are 10 tickets max and you are booking 20.
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Why do we need a pure virtual destructor in C++?
...unctions can have implementations).
struct foo {
virtual void bar() = 0;
};
void foo::bar() { /* default implementation */ }
class foof : public foo {
void bar() { foo::bar(); } // have to explicitly call default implementation.
};
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Google Maps v3 - limit viewable area and zoom level
...script>
</head>
<body>
<div id="map" style="width: 400px; height: 300px;"></div>
<script type="text/javascript">
// This is the minimum zoom level that we'll allow
var minZoomLevel = 5;
var map = new google.maps.Map(document.getElementById('map'...
What does auto&& tell us?
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240
By using auto&& var = <initializer> you are saying: I will accept any initializer ...