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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...or redraw) the WHOLE canvas for a new layout (= try at the game) ?
Just call Canvas.drawColor(Color.BLACK), or whatever color you want to clear your Canvas with.
And: how can I update just a part of the screen ?
There is no such method that just update a "part of the screen" since Android OS...
How can I “unuse” a namespace?
...
You may be stuck using explicit namespaces on conflicts:
string x; // Doesn't work due to conflicting declarations
::string y; // use the class from the global namespace
std::string z; // use the string class from the std namespace
...
How to use PHP OPCache?
...=128
;Sets how much memory should be used by OPcache for storing internal strings
;(e.g. classnames and the files they are contained in)
opcache.interned_strings_buffer=8
; The maximum number of files OPcache will cache
opcache.max_accelerated_files=4000
;How often (in seconds) to check file tim...
How to use NSCache
Can someone give an example on how to use NSCache to cache a string?
Or anyone has a link to a good explanation? I can't seem to find any..
...
How to center icon and text in a android button with width set to “fill parent”
...= (Button) findViewById(R.id.button);
Spannable buttonLabel = new SpannableString(" Button Text");
buttonLabel.setSpan(new ImageSpan(getApplicationContext(), R.drawable.icon,
ImageSpan.ALIGN_BOTTOM), 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
button.setText(buttonLabel);
In my case I nee...
Binding multiple events to a listener (without JQuery)?
...* @param {DOMElement} element - DOM element to add listeners to
** @param {string} eventNames - space separated list of event names, e.g. 'click change'
** @param {Function} listener - function to attach for each event as a listener
*/
function addListenerMulti(element, eventNames, listener) {
var...
Check if inputs are empty using jQuery
...And you don't necessarily need .length or see if it's >0 since an empty string evaluates to false anyway but if you'd like to for readability purposes:
$('#apply-form input').blur(function()
{
if( $(this).val().length === 0 ) {
$(this).parents('p').addClass('warning');
}
});
If...
Android SDK Manager Not Installing Components
Not sure what I'm doing wrong here. I installed the Android SDK Manager, and am now trying to install a platform like the Android Dev website suggests. Once I clicked install I got an error stating that the Manager could not create a temp folder within the Android directory. So I created it. Now I'm...
Is there auto type inferring in Java?
... I meant, once you type cast it to an Object, it will give you Object's to_string" False. Absolutely 100% false.
– Louis Wasserman
Apr 21 '13 at 18:33
143
...
Escaping keyword-like column names in Postgres
...ml#delimited%20identifier
This is the code to quote the identifier:
static String delimited_identifier (String identifier)
{
return "\"" + identifier.replaceAll ("\"", "\"\"") + "\"";
}
And this is the code to build the insert:
static String build_insert (String table, String[] columns)
{
Strin...