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How to detect if multiple keys are pressed at once using JavaScript?
...o of A, the keyup event fires, causing the same logic to determine the opposite result for map[65] (A), which is now false, but since map[66] (B) is still "down" (it hasn't triggered a keyup event), it remains true.
The map array, through both events, looks like this:
// keydown A
// keydown B
[
...
NodeJS: Saving a base64-encoded image to disk
...by +as shown in the link.
I took this circle from http://images-mediawiki-sites.thefullwiki.org/04/1/7/5/6204600836255205.png as sample which looks like:
Next I put it through http://www.greywyvern.com/code/php/binary2base64 which returned me:
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAA...
How exactly does the callstack work?
... might also see xorl rax rax instead of movl.
leave and return to the call site. leave is abbreviating this epilogue and implicitly
Replaces the stack pointer with the base pointer and
Pops the base pointer.
After this operation and ret have been performed, the frame has effectively been popp...
How to get client's IP address using JavaScript?
...r.
Cloudflare
Try it: https://www.cloudflare.com/cdn-cgi/trace
// If your site is on Cloudflare, then you can use '/cdn-cgi/trace' instead
$.get('https://www.cloudflare.com/cdn-cgi/trace', function(data) {
console.log(data)
})
Returns:
fl=4f422
h=www.cloudflare.com
ip=54.193.27.106
ts=15759671...
How do emulators work and how are they written? [closed]
...you handle a given instruction, you have to decode it and perform the requisite operation.
With dynamic recompilation, you iterate over the code much like interpretation, but instead of just executing opcodes, you build up a list of operations. Once you reach a branch instruction, you compile this ...
Algorithm to compare two images
...f the final image. If however you are dealing with images of construction sites, regions of interest may be interpreted by the illegal copier as ugly and may be cropped/edited out liberally. Keep in mind common features of your dataset, and attempt to exploit that knowledge.
Morphing
Morphing tw...
Should I hash the password before sending it to the server side?
I noticed that most sites send the passwords as plain text over HTTPS to the server. Is there any advantage if instead of that I sent the hash of the password to the server? Would it be more secure?
...
What are the best JVM settings for Eclipse? [closed]
...s SO question mentions a potential fix when not accessing to plugin update sites:
-Djava.net.preferIPv4Stack=true
Mentioned here just in case it could help in your configuration.
JVM1.7x64 potential optimizations
This article reports:
For the record, the very fastest options I have found ...
Hidden Features of MySQL
...t to run out of memory.
If you have many connects established (i.e. a web site without persistent connections) you might improve performance by setting thread_cache_size to a non-zero value. 16 is good value to start with. Increase the value until your threads_created do not grow very quickly.
PRI...
How can we match a^n b^n with Java regex?
...I do want to encourage others to do it as well to have good content on the site.
– polygenelubricants
Sep 6 '10 at 16:28
...