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dynamic_cast and static_cast in C++
...t runtime, and work by querying the object (no need to worry about how for now), asking it if it the type we're looking for. If it is, dynamic_cast<Type*> returns a pointer; otherwise it returns NULL.
In order for this base-to-derived casting to work using dynamic_cast<>, Base, Foo and...
How to change the text of a label?
...put[@name=<%=rbtnType.ClientID%>]:radio:checked").val();
if (rbvalue == "C") {
$('#<%=lblLabelName.ClientID %>').html('text1');
} else if (rbvalue == "I") {
$('#<%=lblLabelName.ClientID %>').html('else text2');
} e...
Why can lambdas be better optimized by the compiler than plain functions?
...so passing them to a function template will instantiate a new function specifically for that object. The compiler can thus trivially inline the lambda call.
For functions, on the other hand, the old caveat applies: a function pointer gets passed to the function template, and compilers traditionally...
AngularJS : Prevent error $digest already in progress when calling $scope.$apply()
...ves. Even though you think it fixed something, it didn't.
You can check if a $digest is already in progress by checking $scope.$$phase.
if(!$scope.$$phase) {
//$digest or $apply
}
$scope.$$phase will return "$digest" or "$apply" if a $digest or $apply is in progress. I believe the differenc...
Pimpl idiom vs Pure virtual class interface
...s case, because it's the only member) from the pointer to the A object it knows to be this.
On the user side of the code, a new A will first allocate sizeof(A) bytes of memory, then hand a pointer to that memory to the A::A() constructor as this.
If in a later revision of your library you decide t...
jQuery date formatting
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@Dotnet if it could be done using jQuery, there would not be a jQuery plug-in for date formatting, would there?
– Pekka
Mar 9 '11 at 18:32
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Rails.env vs RAILS_ENV
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ENV['RAILS_ENV'] is now deprecated.
You should use Rails.env which is clearly much nicer.
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Google Maps Android API v2 - Interactive InfoWindow (like in original android google maps)
...dow on screen. To do that you have to manually call Marker.showInfoWindow. Now, if you perform some permanent change in your InfoWindow (like changing the label of your button to something else), this is good enough.
But showing a button pressed state or something of that nature is more complicat...
What does the filter parameter to createScaledBitmap do?
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Also, do you know if it's doing area averaging if you pass filter = true?
– clahey
Nov 5 '10 at 15:36
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How do I merge a git tag onto a branch
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@learner a Tag identifies a specific commit. You can't merge into a specific commit so you'd need to move the tag to the commit you want. This would address the how on that: stackoverflow.com/questions/8044583/…
– Josiah
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