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Nullable type as a generic parameter possible?
...val = reader[columnName];
return (val == DBNull.Value ? null : val);
}
Now you don't need the explicit type hinting on the RHS:
int? value = myDataReader.GetNullableValue("MyColumnName");
In fact, you don't need it anywhere!
var value = myDataReader.GetNullableValue("MyColumnName");
value will...
Javascript / Chrome - How to copy an object from the webkit inspector as code
...le.
Eg:- Copy & Paste the below code in your console and press ENTER. Now, try to paste(CTRL+V for Windows or CMD+V for mac) it some where else and you will get {"name":"Daniel","age":25}
var profile = {
name: "Daniel",
age: 25
};
copy(JSON.stringify(profile));
...
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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generate model using user:references vs user_id:integer
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how does rails know that user_id is a foreign key referencing user?
Rails itself does not know that user_id is a foreign key referencing user. In the first command rails generate model Micropost user_id:integer it only adds a column user_i...
Animate change of view controllers without using navigation controller stack, subviews or modal cont
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I know the appear calls are being done because I logged them. I also don't see why this would affect orientation changes. Can you elaborate why you think it would?
– TigerCoding
Nov 26 '1...
git pull error :error: remote ref is at but expected
...
and for those who dont know where .git folder will be.. it will be created inside your Project/workspace folder :D
– kumar
Oct 11 '17 at 11:56
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Why should I use the keyword “final” on a method parameter in Java?
... );
void doSomething( String arg ) {
String x = arg; // Both variables now point to the same String object.
x = "elephant"; // This variable now points to a different String object.
arg = "giraffe"; // Ditto. Now neither variable points to the original passed String.
}
Mark the local va...
JavaScript code to stop form submission
...
The following works as of now (tested in Chrome and Firefox):
<form onsubmit="event.preventDefault(); validateMyForm();">
Where validateMyForm() is a function that returns false if validation fails. The key point is to use the name event. We ...
ImportError: No module named site on Windows
..., it was a PYTHONHOME variable set to an invalid path... Removed that, and now it WORKS! It seems Steam's Alien Swarm mod added that.
– Timotei
Mar 1 '12 at 15:07
2
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Is pass-by-value a reasonable default in C++11?
... void foo(T const&); and void foo(T&&);.
With that in mind, I now wrote my valued constructors as such:
class T {
U u;
V v;
public:
T(U u, V v)
: u(std::move(u))
, v(std::move(v))
{}
};
Otherwise, passing by reference to const still is reasonable.
...