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Cartesian product of x and y array points into single array of 2D points
... following sections, I include some tests of other alternatives. These are now somewhat out of date, but rather than duplicate effort, I've decided to leave them here out of historical interest. For up-to-date tests, see Panzer's answer, as well as Nico Schlömer's.
Tests against alternatives
Here...
SET versus SELECT when assigning variables?
...d hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one)
When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the ...
How do you detect where two line segments intersect? [closed]
...bering that s × r = − r × s):
u = (q − p) × r / (r × s)
Now there are four cases:
If r × s = 0 and (q − p) × r = 0, then the two lines are collinear.
In this case, express the endpoints of the second segment (q and q + s) in terms of the equation of the first li...
How to Test Facebook Connect Locally
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this used to work for me until recently but now i am receiving connection refused exception when trying to log in, probably due to a change on facebook side. any ideas of a work-around is much appreciated.
– onurmatik
Jul 13 '13 a...
libpthread.so.0: error adding symbols: DSO missing from command line
...
In part solved adding '-lpthread', but now it shows me: gaSim.c:(.text+0x11d6): undefined reference to `glewInit'
– Aerox
Jun 26 '14 at 8:53
1...
PHP MySQL Google Chart JSON - Complete Example
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Thanks a lot! it works now. can you tell me how to customize the table? where can I get info about this? because i have a long data range, the graph is very small and dense.
– Max
May 7 '18 at 8:08
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How to map calculated properties with JPA and Hibernate
...e::numeric / 100) * " +
" cents * " +
" date_part('month', age(now(), createdOn)" +
") " +
"/ 12) " +
"/ 100::numeric")
private double interestDollars;
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How to resume Fragment from BackStack if exists
...ame())){
setTitle ("C");
//set selected item position, etc
}
}
Now, whenever the back stack changes, the title and checked position will reflect the visible Fragment.
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What's the reason I can't create generic array types in Java?
...s) contain, at runtime, information about its component type. So you must know the component type when you create the array. Since you don't know what T is at runtime, you can't create the array.
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How to compare type of an object in Python?
...ou can always use the type(x) == type(y) trick, where y is something with known type.
# check if x is a regular string
type(x) == type('')
# check if x is an integer
type(x) == type(1)
# check if x is a NoneType
type(x) == type(None)
Often there are better ways of doing that, particularly with an...