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What is the main difference between Inheritance and Polymorphism?
...s just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar questions to this but, none I have seen which provide a definitive answer.
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Can a shell script set environment variables of the calling shell? [duplicate]
...t is "setit" then do:
ln -s setit setit-sh
and
ln -s setit setit-csh
Now either directly or in an alias, you do this from sh
eval `setit-sh`
or this from csh
eval `setit-csh`
setit uses $0 to determine its output style.
This is reminescent of how people use to get the TERM environment v...
Should I instantiate instance variables on declaration or in the constructor?
...'s discussable: if you initialise all your fields in the constructor, you know exactly that when you are reading the code, you have just one place where to search...
– nbro
May 8 '15 at 10:42
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UILabel sizeToFit doesn't work with autolayout ios6
...If we run the app in the simulator, sure enough, we see the same thing:
Now, let's select the UILabel in Interface Builder, and take a look at the default settings in the Size inspector:
Note the highlighted constraint above. That is the Content Hugging Priority. As Erica Sadun describes it in...
Installing older version of R package
...are not yet reflected in Rpy2 (for example, see this post (Edit: Link is now dead)).
7 Answers
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Can I split an already split hunk with git?
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@Filype: I don't know why that would have happened, I'm afraid - if you were running git add -p and edited a hunk with e that should only affect what's staged, not your working tree.
– Mark Longair
Dec 24...
Why does AngularJS include an empty option in select?
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This may work for now, but the angular documentation specifically recommends against using ng-init for anything besides ng-repeat - see docs.angularjs.org/api/ng/directive/ngInit
– Ed Norris
Aug 8 '14 at ...
Most used parts of Boost [closed]
When I discovered boost::lexical_cast I thought to myself "why didn't I know about this sooner!" - I hated having to write code like
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How to use background thread in swift?
..., after the previous code in outer block")
})
})
Pre Swift 1.2 – Known issue
As of Swift 1.1 Apple didn't support the above syntax without some modifications. Passing QOS_CLASS_BACKGROUND didn't actually work, instead use Int(QOS_CLASS_BACKGROUND.value).
For more information see Apples do...
How to re-create database for Entity Framework?
...to say that it ran this script correctly. Go and check it out if you like.
Now, uncomment that code and save.
You can run Update-Database again if you want to check that EF thinks its up to date. It won't run the Up step with all of the CreateTable commands because it thinks it's already done this.
...