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What makes a keychain item unique (in iOS)?
...ivate keys. That's a lot different to Apple's sample code that only stores string credentials (username/password). However, I have found out that when you set the kSecClass to kSecClassCertificate or kSecClassKey the Keychain checks also if the entry (the value) is already stored. This prevents from...
WatiN or Selenium? [closed]
...
{
IE _ie = null;
object _lock = new object();
IE GetInstance(string UrlFragment)
{
lock (_lock)
{
if (_ie == null)
{
var instances = new IECollection(true); //Find all existing IE instances
var match = instanc...
What is the benefit of using Fragments in Android, rather than Views?
... for last year, I was also thinking that Fragments don't provide any extra ordinary feature, but I experienced that after clicking back on activity I was loosing all images downloaded in that, so had to add cache implementation, now I'm thinking using fragments it may be very easy
...
Android splash screen image sizes to fit all devices
...ldpi ~ 120dpi)
Medium Density (mdpi ~ 160dpi)
High Density (hdpi ~ 240dpi)
Extra-High Density (xhdpi ~ 320dpi)
(These dpi values are approximations, since custom built devices will have varying dpi values)
What you (if you're a designer) need to know from this is that Android basically chooses fro...
Which is more efficient: Multiple MySQL tables or one large table?
...ow on top of a legacy system. I had to expand the old database tables with extra columns. I decided to make new tables for the new data. Some new features come in handy for the legacy system and now I can easily integrate them without having to rewrite too much of the old queries
...
google oauth2 redirect_uri with several parameters
...
state=THE_STATE_PARAMETERS
So for your case,do this:
/1. create a json string of your parameters ->
{ "a" : "b" , "c" : 1 }
/2. do a base64UrlEncode , to make it URL safe ->
stateString = base64UrlEncode('{ "a" : "b" , "c" : 1 }');
This is a PHP example of base64UrlEncoding & de...
Which one will execute faster, if (flag==0) or if (0==flag)?
... some user declaring them: typedef, enum, struct, class. For example, std::string is user defined, even though you certainly not defined it yourself :)
– Matthieu M.
Jan 7 '11 at 14:29
...
Tab space instead of multiple non-breaking spaces (“nbsp”)?
...
I used this in a case for Swing JTable headers with a String value and an HTML arrow-type character, where I needed this character as a separator. Works great! Thanks!
– Blake Neal
Mar 27 '17 at 19:47
...
How do HashTables deal with collisions?
...ts/changes of HashMap
objects in case of high collisions.
The alternative String hash function added in Java 7 has been removed.
Buckets containing a large number of colliding keys will store their entries in a balanced tree instead of a linked list after
certain threshold is reached.
Above chan...
Best practices for in-app database migration for Sqlite
...use prepared statements
sqlite3_exec([self database].sqliteHandle, [[NSString stringWithFormat:@"PRAGMA user_version = %d", DatabaseSchemaVersionLatest] UTF8String], NULL, NULL, NULL);
}
Here's [self database] method that lazily opens the database:
- (FMDatabase *)database {
if (!_databas...