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Why can't a text column have a default value in MySQL?
...cal to me (and somewhat frustrating, as I want a default value!). Anybody know why this is not allowed?
7 Answers
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Call Activity method from adapter
...ould not cast mContext to your Activity as you are avoiding reuse of code. Now this adapter can only be used inside the Activity which you have casted your mContext variable to, where if you have a listener defined then you can reuse the same Adapter in another Activity. Trust me i have spent enough...
Specifying column name in a “references” migration
...
Do it manually:
add_column :post, :author_id, :integer
but now, when you create the belongs_to statement, you will have to modify it, so now you have to call
def post
belongs_to :user, :foreign_key => 'author_id'
end
...
Will docker container auto sync time with the host machine?
...ning your container with -v /etc/localtime:/etc/localtime:ro
Instead, for now, you have to periodically run this on OSX:
/usr/local/bin/boot2docker ssh sudo ntpclient -s -h pool.ntp.org
Update for users of Kitematic
If you are running Kitematic, which is now the suggested mechanism for getting...
Activity has leaked window that was originally added
...ay since (introduced Fragments just to name one), so it is probably easier now.
– molnarm
Oct 16 '17 at 7:07
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How to have conditional elements and keep DRY with Facebook React's JSX?
...ple of when a developer (me) tries to transfer patterns and approaches he knows from one area to another but it doesn't really work (in this case other template languages).
If you need a conditional element, do it like this:
render: function () {
return (
<div id="page">
...
Catch an exception thrown by an async void method
... I actually mean it's straight-forward to read - whereas I know what's actually going on is really complicated - so my brain is telling me not to believe my eyes...
– Stuart
Mar 21 '11 at 21:01
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What is the purpose of Looper and how to use it?
I am new to Android. I want to know what the Looper class does and also how to use it. I have read the Android Looper class documentation but I am unable to completely understand it.
I have seen it in a lot of places but unable to understand its purpose. Can anyone help me by defining the purpos...
What is the difference between string primitives and String objects in JavaScript?
...art from being a full fledged object, serves as a wrapper for v8::String.
Now it is only logical, a call to new String('').method() has to unbox this v8::StringObject's v8::String before executing the method, hence it is slower.
In many other languages, primitive values do not have methods.
The...
Abstract functions in Swift Language
...abstractFunction. The protocol would stay the same, and the classes would now look like:
class BaseThing
{
func sharedFunction(thing: Thing)
{
println("All classes share this implementation")
thing.abstractFunction()
}
}
class DerivedThing : BaseThing, Thing
{
fun...