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Why is the clone() method protected in java.lang.Object?
...ails to serve this purpose ... This is a highly atypical use of interfaces and not one to be emulated ... In order for implementing the interface to have any effect on a class, it and all of its superclasses must obey a fairly complex, unenforceable and largely undocumented protocol"
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Check if a class has a member function of a given signature
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I'm not sure if I understand you correctly, but you may exploit SFINAE to detect function presence at compile-time. Example from my code (tests if class has member function size_t used_memory() const).
template<typename T>
struct HasUsedMemory...
Import a module from a relative path
... of modules with your script. I use this in production in several products and works in many special scenarios like: scripts called from another directory or executed with python execute instead of opening a new interpreter.
import os, sys, inspect
# realpath() will make your script run, even if ...
“Application tried to present modally an active controller”?
...e my concern! What I did was to add a dummy UIViewController to the tabbar and present modally the actual view controller subclass instance.
– Javier Soto
Sep 25 '11 at 18:00
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How do I right align controls in a StatusStrip?
...o pseudo right align controls by setting the Text property to string.Empty and setting the Spring property to true. This will cause it to fill all of the available space and push all the controls to the right of the ToolStripLabel over.
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Fling gesture detection on grid layout
I want to get fling gesture detection working in my Android application.
18 Answers
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How do I fix "The expression of type List needs unchecked conversion…'?
... Thanks -- that's an interesting insight about the "warranty" and the invisible cast done by the compiler versus a cast done explicitly in my own code.
– user46277
Dec 16 '08 at 5:30
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Find where java class is loaded from
...ClassLoader() to return null. See here for an extension to this method to handle that.
– OldCurmudgeon
Jan 4 '14 at 10:47
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Assigning default value while creating migration file
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Default migration generator does not handle default values (column modifiers are supported but do not include default or null), but you could create your own generator.
You can also manually update the migration file prior to running rake db:migrate by adding th...
How to copy a collection from one database to another in MongoDB
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At the moment there is no command in MongoDB that would do this. Please note the JIRA ticket with related feature request.
You could do something like:
db.<collection_name>.find().forEach(function(d){ db.getSiblingDB('<new_database>')['<c...