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How does LMAX's disruptor pattern work?
... entry, and stores the result in field a in the entry. A then move on, and now B can read the entry, and the value of a A stored. If reader C does not depend on A, C should not attempt to read a.
This is indeed an interesting programming model. Regardless of the performance, the model alone can ben...
Is there a way for multiple processes to share a listening socket?
... into the event descriptor set
for that worker process.
The worker now relinquishes the mutex (which means that any events
that arrived on other workers can proceeed), and starts processing
each request that was earlier queued. Each request corresponds to an
event that was signa...
What's the fastest way to convert String to Number in JavaScript?
...
There are 4 ways to do it as far as I know.
Number(x);
parseInt(x, 10);
parseFloat(x);
+x;
By this quick test I made, it actually depends on browsers.
http://jsperf.com/best-of-string-to-number-conversion/2
Implicit marked the fastest on 3 browsers, but it ma...
How to read the output from git diff?
...mits_on_stdin = 0;
int commits;
After the change this fragment of now 'http-fetch.c' file looks like this instead:
#include "cache.h"
#include "walker.h"
int main(int argc, const char **argv)
{
const char *prefix;
struct walker *walker;
int commits_on_stdin = 0;
...
What is the maximum possible length of a query string?
...
And now I have a reason I can tell the backend engineers that we won't accept a list of one hundred 36 character UUIDs in the queryParams of a GET request. Thanks!
– Mordred
Jan 15 at 22:37
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Multiple INSERT statements vs. single INSERT with multiple VALUES
...d to be called the normalization stage of query processing
This stage is now called binding or algebrizing and it takes the expression parse tree output from the previous parse stage and outputs an algebrized expression tree (query processor tree) to go forward to optimization (trivial plan optimi...
Which is more efficient, a for-each loop, or an iterator?
...to traverse the LinkedList on every iteration.
This is perfect when you know that is any RandomAccess based list collection.
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JavaScript isset() equivalent
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// Simple checking if we have a declared variable
isset(some) // true
// Now trying to see if we have a top level property, still valid
isset(some.nested) // false
// But here is where things fall apart: trying to access a deep property
// of a complex object; it will throw an error
isset(some.ne...
Export Data from mysql Workbench 6.0
...
mysqldump: [ERROR] unknown variable 'delayed-insert=FALSE'
This error occurs on various systems and can be temporarily fixed by:
Going to the appropriate directory depending on the system:
a) Windows: C:\Program Files\MySQL\MySQL Workbench 6....
Twitter bootstrap modal-backdrop doesn't disappear
... removed the comments from a modal that I was getting with $.html() and it now works. Freakin' weird.
– Matrym
Sep 12 '13 at 20:40
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