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Boolean vs boolean in Java
... Booleans, conditional operators and autoboxing):
public static void main(String[] args) throws Exception {
Boolean b = true ? returnsNull() : false; // NPE on this line.
System.out.println(b);
}
public static Boolean returnsNull() {
return null;
}
Use Boolean when you need an object, e...
How to drop SQL default constraint without knowing its name?
... drop the constraint and dynamically execute it.
declare @schema_name nvarchar(256)
declare @table_name nvarchar(256)
declare @col_name nvarchar(256)
declare @Command nvarchar(1000)
set @schema_name = N'MySchema'
set @table_name = N'Department'
set @col_name = N'ModifiedDate'
select @Command = '...
Fastest way to reset every value of std::vector to 0
...ATIONS = 100000;
const size_t TEST_ARRAY_SIZE = 10000;
int main(int argc, char** argv) {
std::vector<int> v(TEST_ARRAY_SIZE, 0);
for(size_t i = 0; i < TEST_ITERATIONS; ++i) {
#if TEST_METHOD == 1
memset(&v[0], 0, v.size() * sizeof v[0]);
#elif TEST_METHOD == 2
...
What is the advantage to using bloom filters?
... bits, for small integers, to an
arbitrary number of bits, such as for
strings (tries are an exception, since
they can share storage between
elements with equal prefixes). Linked
structures incur an additional linear
space overhead for pointers. A Bloom
filter with 1% error and an opti...
Problem with converting int to string in Linq to entities
...
With EF v4 you can use SqlFunctions.StringConvert. There is no overload for int so you need to cast to a double or a decimal. Your code ends up looking like this:
var items = from c in contacts
select new ListItem
{
Va...
jQuery removeClass wildcard
...ot, because the removeClass function will strip whitespace from your class string for you via classes = ( value || "" ).match( rnotwhite ) || [];
– eephillip
Jan 7 '15 at 22:11
...
Are nested HTML comments possible?
...ut delving into the SGML that underlies it)) have come to believe that the string <!-- begins a comment, and the string --> ends a comment.
Actually, <! and > delimit an SGML declaration within your HTML document, such as the DOCTYPE declaration we've all seen at the top of our pages. W...
Groovy executing shell commands
Groovy adds the execute method to String to make executing shells fairly easy;
7 Answers
...
Create a string of variable length, filled with a repeated character
...as been asked by someone else in it's Java form here: Java - Create a new String instance with specified length and filled with specific character. Best solution?
...
How to mount a host directory in a Docker container
... mount instead of -v. Here's its documentation:
--mount: Consists of multiple key-value pairs, separated by commas. Each key/value pair takes the form of a <key>=<value> tuple. The --mount syntax is more verbose than -v or --volume, but the order of the keys is not significant, and the...