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PostgreSQL Autoincrement
... @Dr Deo : they use serial instead autoincrement keyword, i don't know why :)
– Ahmad
Jul 22 '12 at 7:16
4
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How to get the name of the calling method?
...
Now it seems to be caller_locations[0].label on Ruby 2.2.0 else you always have send_action result
– brcebn
Feb 16 '16 at 15:25
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What underlies this JavaScript idiom: var self = this?
...in event handlers (especially in closures).
Edit: Note that using self is now discouraged as window.self exists and has the potential to cause errors if you are not careful.
What you call the variable doesn't particularly matter. var that = this; is fine, but there's nothing magic about the name....
Primary key or Unique index?
...e a composed primary key (person_id, car_id)?
– unbeknown
Jan 28 '09 at 12:20
3
primary key (pers...
What does “abstract over” mean?
... (implicit ff: Foldable[F], m: Monoid[B]) =
ff.foldMap(as, f)
Now we have something quite general. The method mapReduce will fold any F[A] given that we can prove that F is foldable and that A is a monoid or can be mapped into one. For example:
case class Sum(value: Int)
case class Pro...
pip issue installing almost any library
...ll to get most of what I needed done, which has generally worked. However, now I'm trying to download the nltk library, and neither is getting the job done.
...
Regex for password must contain at least eight characters, at least one number and both lower and up
...avor, \W matches only ASCII characters. So you haven't changed that, and now you have to filter out whitespace characters. Furthermore, all the parentheses and {1,} quantifiers you added are pure noise, and removing the non-greedy (?) operators was pointless. There is no improvement here.
...
Site stopped working in asp.net System.Web.WebPages.Razor.Configuration.HostSection cannot be cast t
... and why the super-class bindings wouldn't handle for Razor. Does anyone know the answer?
– Shane
Oct 31 '13 at 15:02
...
Determine if Android app is being used for the first time
...SET_APP_RUN_FIRST_TIME, "FIRST");
return App_runFirst;
}
}
Now Open Your Activity & Initialize .
private SharedPreference sharedPreferenceObj; // Declare Global
Now Call this in OnCreate section
sharedPreferenceObj=new SharedPreference(YourActivity.this)...
Do sealed classes really offer performance Benefits?
...are complex rules regarding calling type, virtual/nonvirtual, and I don't know them all so I can't really outline them for you, but if you google for sealed classes and virtual methods you might find some articles on the topic.
Note that any kind of performance benefit you would obtain from this le...