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rgdal package installation
...at can be useful, still under a Debian based system, is to install the apt-file package and run :
$ sudo apt-file update
Then, when you get an error such as :
configure: error: proj_api.h not found in standard or given locations.
You can use the following command to find which package you must...
Is there any good dynamic SQL builder library in Java? [closed]
...(name:"t1",description:"XXX");
def col1 = new Column(primaryKey:true,name:"id",type:"bigint",required:true);
t.addColumn(col1);
t.addColumn(new Column(name:"c2",type:"DECIMAL",size:"8,2"));
t.addColumn( new Column(name:"c3",type:"varchar"));
t.addColumn(new Column(name:"c4",type:"TIMESTAMP",descript...
How does BitLocker affect performance? [closed]
...Developers who use IDEs like Visual Studio are working on lots and lots of files at once. More than the usual office worker, I would think.
...
Difference between $.ajax() and $.get() and $.load()
...the situation that determines which one to use. Need to send the info to a file internally? Use .post (this would be most of the cases). Need to send the info in such a way that you could provide a link to the specific moment? Use .get. Both of them allow a callback where you can handle the response...
PHP method chaining?
...
I didn't think so either, but it should work right? Perhaps if PHP4 wasn't so PHP4-ish.
– alex
Sep 16 '10 at 6:26
...
_=> what does this underscore mean in Lambda expressions?
...going to ignore it.
It's basically exploiting the syntax for what a legal identifier in C# constitutes, and since an identifier can start with an underscore, and contain nothing else, it's just a parameter name.
You could just have easily have written:
var _ = 10;
...
How to save a plot as image on the disk?
...he device using dev.off()
Some example code for saving the plot to a png file:
fit <- lm(some ~ model)
png(filename="your/file/location/name.png")
plot(fit)
dev.off()
This is described in the (combined) help page for the graphical formats ?png, ?bmp, ?jpeg and ?tiff as well as in the separa...
How do I use arrays in C++?
... how truly Evil™ they are? Consider the
program below, consisting of two files [main.cpp] and [numbers.cpp]:
// [main.cpp]
#include <iostream>
extern int* numbers;
int main()
{
using namespace std;
for( int i = 0; i < 42; ++i )
{
cout << (i > 0? ", " : ""...
Remove duplicate elements from array in Ruby
...hat uniq takes a block, so if you have a have an array of keys:
["bucket1:file1", "bucket2:file1", "bucket3:file2", "bucket4:file2"]
and you want to know what the unique files are, you can find it out with:
a.uniq { |f| f[/\d+$/] }.map { |p| p.split(':').last }
...
Is there a code obfuscator for PHP? [closed]
...or very big projects. They can't handle variables that are included in one file and used in another, for instance.
10 Answe...