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What is the maximum amount of RAM an app can use?
...y need to know how much memory you can allocate manually you can get total free memory and calculate a pre-determined portion (in %) out of it.
In my case, I needed to cache decrypted photos in memory so I don't need to decrypt them everytime user slides through the list.
For this purpose you can ...
Where are an UIWebView's cookies stored?
...ng this in a category. Here's what I ended up using:
NSHTTPCookieStorage+Info.h
#import <Foundation/Foundation.h>
@interface NSHTTPCookieStorage (Info)
+ (NSDictionary*) describeCookies;
+ (NSDictionary *) describeCookie:(NSHTTPCookie *)cookie;
@end
NSHTTPCookieStorage.m
@implementati...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
...trials and tribulations writing your own one.
It latter case look at "lock-free", "wait-free" paradigms. Looks like rocket-science at a first glance, but could help you achieving fantastic performance in comparison to "usual locking".
...
Resizing an image in an HTML5 canvas
...thumbnailer(canvas, img, 188, 3); //this produces lanczos3
// but feel free to raise it up to 8. Your client will appreciate
// that the program makes full use of his machine.
document.body.appendChild(canvas);
};
Now it's time to pit your best browsers out there and see which one will...
Difference between variable declaration syntaxes in Javascript (including global variables)?
...lt;script src="external.js"></script>
/* external.js */
console.info(varDeclaration == true); // could be .log, alert etc
// returns false in IE8
console.info(noVarDeclaration == true); // could be .log, alert etc
// returns false in IE8
console.info(window.hungOnWindow == true); // cou...
Is onload equal to readyState==4 in XMLHttpRequest?
...ById('log').innerHTML += msg + "<br/>";
}
function log(xhr, evType, info) {
var evInfo = evType;
if (info)
evInfo += " - " + info ;
evInfo += " - readyState: " + xhr.readyState + ", status: " + xhr.status;
logText(evInfo);
}
function selected(radio) {
document.get...
e.printStackTrace equivalent in python
...rent exception. See http://docs.python.org/library/traceback.html for more information.
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Setting git parent pointer to a different parent
...sm (see definition of Git grafts in Git Glossary and documentation of .git/info/grafts file in Git Repository Layout documentation) to change parent of a commit, check that it did correct thing with some history viewer (gitk, git log --graph, etc.) and then use git filter-branch (as described in "Ex...
Declaring variables inside loops, good practice or bad practice?
...ay even be possible that the variable is not allocated, just re-using some free slot (from other variable whose scope has ended).
With restricted and more precise scope come more accurate optimizations. But more importantly, it makes your code safer, with less states (i.e. variables) to worry about...
android webview geolocation
...gt;= Build.VERSION_CODES.KITKAT) {
if (0 != (getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE)) {
WebView.setWebContentsDebuggingEnabled(true);
}
}
webView.setInitialScale(1);
webView.getSettings(...