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Prefer composition over inheritance?
Why prefer composition over inheritance? What trade-offs are there for each approach? When should you choose inheritance over composition?
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Templated check for the existence of a class member function?
Is it possible to write a template that changes behavior depending on if a certain member function is defined on a class?
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Python class inherits object
Is there any reason for a class declaration to inherit from object ?
6 Answers
6
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How can I launch multiple instances of MonoDevelop on the Mac?
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On Mac, if you have an app open and you try to launch it again, the Mac just switches to the open app. You can force it to open a new instance by passing the option "-n" to the launcher. In a terminal, run
open -n /Applications/MonoDevelop.app
Note also that MonoDevelop is ca...
Is Chrome's JavaScript console lazy about evaluating arrays?
I'll start with the code:
7 Answers
7
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Uses for Optional
Having been using Java 8 now for 6+ months or so, I'm pretty happy with the new API changes. One area I'm still not confident in is when to use Optional . I seem to swing between wanting to use it everywhere something may be null , and nowhere at all.
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How to make a .jar out from an Android Studio project
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Open build.gradle for library project
Write two tasks in build.gradle -- deleteJar and createJar and add rule createJar.dependsOn(deleteJar, build)
The code from above:
task deleteJar(type: Delete) {
delete 'libs/jars/logmanagementlib.jar'
}
tas...
jQuery Mobile: document ready vs. page events
...ything before jQuery Mobile 1.4. Old way of handling is now deprecated and it will stay active until (including) jQuery Mobile 1.5, so you can still use everything mentioned below, at least until next year and jQuery Mobile 1.6.
Old events, including pageinit don't exist any more, they are replaced...
Focus-follows-mouse (plus auto-raise) on Mac OS X
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You can do it for Terminal.app by issuing the following command at the command line:
defaults write com.apple.Terminal FocusFollowsMouse -bool true
For X11 apps you can do this:
defaults write com.apple.x11 wm_ffm -bool true
In Sn...
How does a language expand itself? [closed]
...am learning C++ and I've just started learning about some of Qt 's capabilities to code GUI programs. I asked myself the following question:
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