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What does the plus sign do in '+new Date'
...//blog.jeremymartin.name/2008/03/understanding-loose-typing-in.html
http://www.jibbering.com/faq/faq_notes/type_convert.html
Other examples:
>>> +new Date()
1224589625406
>>> +"3"
3
>>> +true
1
>>> 3 == "3"
true
...
How to empty/destroy a session in rails?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Javascript Reduce an empty array
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Is there any way to specify a suggested filename when using data: URI?
...is thread html5 has download attribute, it works also on firefox 20 http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#attr-hyperlink-download
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Are negative array indexes allowed in C?
...t about negative array indices on 64-bit systems (LP64 presumably): http://www.devx.com/tips/Tip/41349
The author seems to be saying that 32 bit int array indices with 64 bit addressing can result in bad address calculations unless the array index is explicitly promoted to 64 bits (e.g. via a ptrdi...
How can I change or remove HTML5 form validation default error messages?
...
you can change them via constraint validation api: http://www.w3.org/TR/html5/constraints.html#dom-cva-setcustomvalidity
if you want an easy solution, you can rock out civem.js, Custom Input Validation Error Messages JavaScript lib
download here: https://github.com/javanto/civem....
When and how should I use a ThreadLocal variable?
...
That's exactly how the exPOJO framework (www.expojo.com) allows access to ORM Session/PersistenceManager without needing the overhead of annotations and injection. It is kind of like 'thread injection' instead of 'object injection'. It provides access to dependencie...
What is the use of the pipe symbol in YAML?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How to set custom header in Volley Request
...equestQueue queue = Volley.newRequestQueue(this);
String url = "http://www.somewebsite.com";
StringRequest getRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>()
{
@Override
public void onResponse(String respons...
How to compare two colors for similarity/difference
... 0xFF);
}
public static int[] rgb2lab(int R, int G, int B) {
//http://www.brucelindbloom.com
float r, g, b, X, Y, Z, fx, fy, fz, xr, yr, zr;
float Ls, as, bs;
float eps = 216.f / 24389.f;
float k = 24389.f / 27.f;
float Xr = 0.964221f; // reference white D50
float Yr ...