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SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
...t puts null values in for the unpopulated fields.
This wikipedia article em>x m>plains the various types of joins with em>x m>amples of output given a sample set of tables.
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How can I give eclipse more memory than 512M?
...as much memory as I'd like it to be able to use (between 2 and 4 gigs for em>x m>ample).
Open eclipse.ini in the Eclipse installation directory.
You should be able to change the memory sizes after -vmargs up to 1024 without a problem up to some mam>x m>imum value that's dependent on your system. Here's that...
What are the mathematical/computational principles behind this game?
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Finite Projective Geometries
The am>x m>ioms of projective (plane) geometry are slightly different than the Euclidean geometry:
Every two points have em>x m>actly one line that passes through them (this is the same).
Every two lines meet in em>x m>actly one point (this is...
What is the difference between persist() and merge() in JPA and Hibernate?
...avadoc:
The semantics of the persist
operation, applied to an entity m>X m> are
as follows:
If m>X m> is a new entity, it
becomes managed. The entity m>X m> will be
entered into the database at or before
transaction commit or as a result of
the flush operation.
If m>X m> is a
preem>x m>isting ma...
How to catch integer(0)?
... length integers, then you want something like
is.integer0 <- function(m>x m>)
{
is.integer(m>x m>) && length(m>x m>) == 0L
}
Check it with:
is.integer0(integer(0)) #TRUE
is.integer0(0L) #FALSE
is.integer0(numeric(0)) #FALSE
You can also use assertive for this.
library(assertive)
m>x m> &l...
Scala constructor overload?
...
It's worth em>x m>plicitly mentioning that Aum>x m>iliary Constructors in Scala must either call the primary constructor (as in landon9720's) answer, or another aum>x m>iliary constructor from the same class, as their first action. They cannot simply c...
How to do a PUT request with curl?
...
Using the -m>X m> flag with whatever HTTP verb you want:
curl -m>X m> PUT -d arg=val -d arg2=val2 localhost:8080
This em>x m>ample also uses the -d flag to provide arguments with your PUT request.
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Increase number of am>x m>is ticks
...
You can override ggplots default scales by modifying scale_m>x m>_continuous and/or scale_y_continuous. For em>x m>ample:
library(ggplot2)
dat <- data.frame(m>x m> = rnorm(100), y = rnorm(100))
ggplot(dat, aes(m>x m>,y)) +
geom_point()
Gives you this:
And overriding the scales can give you s...
Which is faster in Python: m>x m>**.5 or math.sqrt(m>x m>)?
...
math.sqrt(m>x m>) is significantly faster than m>x m>**0.5.
import math
N = 1000000
%%timeit
for i in range(N):
z=i**.5
10 loops, best of 3: 156 ms per loop
%%timeit
for i in range(N):
z=math.sqrt(i)
10 loops, best of 3: 9...
how do I make a single legend for many subplots with matplotlib?
...ies, with multiple subplots with matplotlib. That is, I have 9 plots on a 3m>x m>3 grid, all with the same for lines (of course, different values per line).
...