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Picking a random element from a set
...andom().nextInt(size); // In real life, the Random object should be rather more shared than this
int i = 0;
for(Object obj : myhashSet)
{
if (i == item)
return obj;
i++;
}
share
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i...
Why is there a difference in checking null against a value in VB.NET and C#?
...g the behaviour of NULL in (most if not all) SQL databases. This is also a more standard (than C#'s) interpretation of three-valued logic, as explained here.
The C# team made different assumptions about what NULL means, resulting in the behaviour difference you show. Eric Lippert wrote a blog about...
What is the difference between pip and conda?
...es directory.
So Conda is a packaging tool and installer that aims to do more than what pip does; handle library dependencies outside of the Python packages as well as the Python packages themselves. Conda also creates a virtual environment, like virtualenv does.
As such, Conda should be compared...
Is there a way to get a collection of all the Models in your Rails app?
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Commenting in a Bash script inside a multiline command
... Thanks for the explanation. I've opened a question on unix.sx asking for more details, bash multi line command with comments after the continuation character.
– Faheem Mitha
Aug 21 '11 at 15:18
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Is Chrome's JavaScript console lazy about evaluating arrays?
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How to sort an array by a date property
...ve, positive, or zero.
return new Date(b.date) - new Date(a.date);
});
More Generic Answer
array.sort(function(o1,o2){
if (sort_o1_before_o2) return -1;
else if(sort_o1_after_o2) return 1;
else return 0;
});
Or more tersely:
array.sort(function(o1,o2){
retur...
gdb split view with code
...n GDB stops e.g. after a next, like the native display command.
Vs TUI:
more robust, as it just prints to stdout instead of putting the shell on a more magic curses state, e.g.:
vi mode in .inputrc causes problems: https://superuser.com/questions/180512/how-to-turn-off-gdb-tui/927728#927728
pro...
Practical uses of different data structures [closed]
...string.
composite data structures are data structures that are composed of more than one primitive data types.class, structure, union, array/record.
abstract datatypes are composite datatypes that have way to access them efficiently which is called as an algorithm. Depending on the way the data is a...
SQL Server - SELECT FROM stored procedure
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