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store and retrieve a class object in shared preference
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Serialise it and store it, in a database (SQLite) / in a flat file.
– Blundell
Mar 24 '11 at 11:35
5
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What is the difference between screenX/Y, clientX/Y and pageX/Y?
...orner of the visible part of the page, "seen" through browser window.
See Demo
You'll probably never need screenX/Y
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How to read and write excel file
...eSheet("new sheet");
// Create a row and put some cells in it. Rows are 0 based.
Row row = sheet.createRow((short)0);
// Create a cell and put a value in it.
Cell cell = row.createCell(0);
cell.setCellValue(1);
// Or do it on one line.
row.createCell(1).setCellValue(1.2);
row.createCell(2).setCell...
Principal component analysis in Python
...s is another variant of the XY problem - the OP said he didn't want an SVD-based solution because he thought SVD will be too slow, probably without having tried it yet. In cases like this I personally think it's more helpful to explain how you would tackle the broader problem, rather than answering ...
What's the meaning of interface{}?
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You can refer to the article "How to use interfaces in Go" (based on "Russ Cox’s description of interfaces"):
What is an interface?
An interface is two things:
it is a set of methods,
but it is also a type
The interface{} type, the empty interface is t...
Is there some way to PUSH data from web server to browser?
...s with HTTP and then upgrade them to two-directional client-server message-based communication.
You can easily initiate the connection from javascript:
var ws = new WebSocket("ws://your.domain.com/somePathIfYouNeed?args=any");
ws.onmessage = function (evt)
{
var message = evt.data;
//decode m...
Objective-C ARC: strong vs retain and weak vs assign
...gnment occurs when evaluating an assignment operator. The
semantics vary based on the qualification:
For __strong objects, the new pointee is first retained; second, the lvalue is loaded with primitive semantics; third, the new pointee is stored into the lvalue with primitive semantics; an...
minimum double value in C/C++
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Meaningful for all specializations in which is_bounded != false.
Online demo
Lots of non portable C++ answers here !
There are many answers going for -std::numeric_limits<double>::max().
Fortunately, they will work well in most of the cases. Floating point encoding schemes decompose a num...
jQuery date/time picker [closed]
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My best experience with a datepicker is with the prototype-based AnyTime. I know that's not jQuery, but it may still be worth the compromise for you. I know absolutely no prototype, and it's still easy enough to work with.
One caveat I've found: it is not forward compatible on som...
Convert json data to a html table [closed]
...ten your code in vanilla-js, using DOM methods to prevent html injection.
Demo
var _table_ = document.createElement('table'),
_tr_ = document.createElement('tr'),
_th_ = document.createElement('th'),
_td_ = document.createElement('td');
// Builds the HTML Table out of myList json d...