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Reason to Pass a Pointer by Reference in C++?
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50% of C++ programmers like to set their pointers to null after a delete:
template<typename T>
void moronic_delete(T*& p)
{
delete p;
p = nullptr;
}
Without the reference, you would only be changing a local copy of the pointer, not...
How to present popover properly in iOS 8
...he popover itself anymore, you talk to the view controller inside of it to set the content size, by calling the property preferredContentSize
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Is is possible to check if an object is already attached to a data context in Entity Framework?
...tatic void AttachToOrGet<T>(this ObjectContext context, string entitySetName, ref T entity)
where T : IEntityWithKey
{
ObjectStateEntry entry;
// Track whether we need to perform an attach
bool attach = false;
if (
context.ObjectStateManager.TryGetObjectStateEntry
...
center aligning a fixed position div
...lthough it's not supported in some old browsers. And we don't even need to set a fixed or relative width.
.centered {
position: fixed;
left: 50%;
transform: translate(-50%, 0);
}
Working jsfiddle comparison here.
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How can i query for null values in entity framework?
...or backwards compatibility, it will be opt-in - you need manually enable a setting to make entry == value work. No word yet on what this setting is. Stay tuned!
Edit 2: According to this post by the EF team, this issue has been fixed in EF6! Woohoo!
We changed the default behavior of EF6 ...
socket.io and session?
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Now that I am thinking about this.... why not just set the store for the cookies and the store for the socket to the same store?
– James
Feb 2 '13 at 19:59
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Error Code: 2013. Lost connection to MySQL server during query
...imit rows as putting a limit in every time I want to search the whole data set gets tiresome.
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how to edit .csproj file
... is.
right click the file.
goto properties
where Build Action option is set it to NONE.
Do a build (yes you may get build error if you do even better)
go back to properties of that file
set Build Action option is set it back to Compile.
rebuild.
Congratulate your self for being smarter than every...
ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
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the keystore file is here C:\Documents and Settings\Shalini\.android> so when i enter C:\Documents and Settings\Shalini\.android>keytool -list -alias androiddebugkey -keystore .a...
How to determine height of UICollectionView with FlowLayout
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Yes, I set the collectionview to "not scrollabe, no scollbars" and then reload it then the content of the tableview is set. Also the collectionview is a subclass that returns it's content size as intrinsicContentSize. Hope that help...