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C# difference between == and Equals()
...ly ignored in operator overload resolution, and that is indeed the whole point of my answer.
– Mehrdad Afshari
Jul 17 '12 at 17:22
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show 9 ...
Access denied for user 'root'@'localhost' while attempting to grant privileges. How do I grant privi
...m MySQL <= 5.1 via mysqldump ... --all-databases and then imported that into your MySQL >= 5.5, your users will have been replaced (of course), but your root will have the same problem as OP. And mysql_upgrade won't work - you have to add --force flag, i.e. mysql_upgrade -u root -p --force. Ho...
Versioning SQL Server database
..._history_ table, something like
create table VersionHistory (
Version int primary key,
UpgradeStart datetime not null,
UpgradeEnd datetime
);
gets a new entry every time an upgrade script runs which corresponds to the new version.
This ensures that it's easy to see what version o...
SQL update fields of one table from fields of another one
... update only selected row
AND a.id = b.id;
SQL Fiddle.
This syntax was introduced with Postgres 8.2 in 2006, long before the question was asked. Details in the manual.
Related:
Bulk update of all columns
With list of columns in B
If all columns of A are defined NOT NULL (but not necessarily B)...
Real differences between “java -server” and “java -client”?
...Server VM has been specially tuned to maximize peak operating speed. It is intended for executing long-running server applications, which need the fastest possible operating speed more than a fast start-up time or smaller runtime memory footprint.
The Client VM compiler serves as an upgrade for both...
In C++, if throw is an expression, what is its type?
...
According to the standard, 5.16 paragraph 2 first point, "The second or the third operand (but not both) is a throw-expression (15.1); the result is of the type of the other and is an rvalue." Therefore, the conditional operator doesn't care what type a throw-expression is, b...
What are the lesser known but useful data structures?
...
Burst tries are also an interesting variant, where you use only a prefix of the strings as nodes and otherwise store lists of strings in the nodes.
– Torsten Marek
Feb 1 '09 at 19:16
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Getting value of public static final field/property of a class in Java via reflection
...ield f = R.class.getField("_1st");
Class<?> t = f.getType();
if(t == int.class){
System.out.println(f.getInt(null));
}else if(t == double.class){
System.out.println(f.getDouble(null));
}...
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What is the difference between gravity and layout_gravity in Android?
... See, I find this funny, because if I just go off the names, my intuition is the other way around. Every time, I think "layout_gravity" means "the gravity for how this ViewGroup lays out it's contents", and "gravity" is "where this View gravitates to".
– Ogre
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How do you programmatically set an attribute?
...) is equivalent to
``x.y = v''.
Edit: However, you should note (as pointed out in a comment) that you can't do that to a "pure" instance of object. But it is likely you have a simple subclass of object where it will work fine. I would strongly urge the O.P. to never make instances of object li...