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proper way to sudo over ssh
...--prompt="" -S -- "veracrypt --non-interactive --stdin --keyfiles=/path/to/test.key /path/to/test.img /mnt/mountpoint" << EOF
SudoPassword
VeraCryptContainerPassword
EOF
It should be noted that in all the command-line examples above (everything except the script) the << EOF construct o...
Convert generic List/Enumerable to DataTable?
...perDescriptor for the object-type T).
Edit re performance query; here's a test rig with results:
Vanilla 27179
Hyper 6997
I suspect that the bottleneck has shifted from member-access to DataTable performance... I doubt you'll improve much on that...
Code:
using System;
using System.Collections.G...
How to use R's ellipsis feature when writing your own function?
...sis into a list with list(), and then perform your operations on it:
> test.func <- function(...) { lapply(list(...), class) }
> test.func(a="b", b=1)
$a
[1] "character"
$b
[1] "numeric"
So your get_list_from_ellipsis function is nothing more than list.
A valid use case for this is in ...
How to handle floats and decimal separators with html5 input type number
...emonstrating that the adding of the step attribute makes it work, and also testing whether the current value is valid:
jsFiddle
TL;DR: Set the a step attribute to a floating-point value, because it defaults to 1.
NOTE: The comma doesn't validate for me, but I suspect that if I set my OS langua...
How to detect if a property exists on an ExpandoObject?
... is still current; don't take anyone's word for the price of reflection -- test it for yourself and see if you can afford it
– nik.shornikov
Jun 10 '13 at 23:24
1
...
How do you reverse a string in place in C or C++?
... *head = t; // swapping as we go
*tail = h;
}
}
// test program that reverses its args
#include <stdio.h>
int main(int argc, char **argv)
{
do {
printf("%s ", argv[argc-1]);
strrev(argv[argc-1]);
printf("%s\n", argv[argc-1]);
} while(--argc);
return...
Retrieve only static fields declared in Java class
...
You can do it like this:
Field[] declaredFields = Test.class.getDeclaredFields();
List<Field> staticFields = new ArrayList<Field>();
for (Field field : declaredFields) {
if (java.lang.reflect.Modifier.isStatic(field.getModifiers())) {
staticFields.add...
Handle spring security authentication exceptions with @ExceptionHandler
... the json myself from the AuthenticationEntryPoint and it works.
Just for testing I changed the AutenticationEntryPoint by removing response.sendError
@Component("restAuthenticationEntryPoint")
public class RestAuthenticationEntryPoint implements AuthenticationEntryPoint{
public void commence...
error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' — Miss
...uch that whatever user mysqld is running as can read/write to it. An easy test is to open it up to full read/write and see if it still works:
chmod 777 /var/run/mysqld/mysqld.sock
If that fixes the issue, you can tailor the permissions and ownership of the socket as needed based on your securit...
How to make a flat list out of list of lists?
...
I tried a test with the same data, using itertools.chain.from_iterable : $ python -mtimeit -s'from itertools import chain; l=[[1,2,3],[4,5,6], [7], [8,9]]*99' 'list(chain.from_iterable(l))'. It runs a bit more than twice as f...