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Generating random numbers in Objective-C
...
96
Use arc4random_uniform(x) as described below by @yood. It is also in stdlib.h (after OS X 10.7 and iOS 4.3) and gives a more uniform distri...
store and retrieve a class object in shared preference
... ByteArrayOutputStream out = new ByteArrayOutputStream();
Base64OutputStream b64 = new Base64OutputStream(out, Base64.DEFAULT);
b64.write(data);
b64.close();
out.close();
ed.putString(key, new String(out.toByteArray()));
ed.commit();
} catch...
How to hash a password
...t+hash into a string for storage
string savedPasswordHash = Convert.ToBase64String(hashBytes);
DBContext.AddUser(new User { ..., Password = savedPasswordHash });
STEP 5 Verify the user-entered password against a stored password
/* Fetch the stored value */
string savedPasswordHash = DBContext.Ge...
Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
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The count method of NSArray returns an NSUInteger, and on the 64-bit OS X platform
NSUInteger is defined as unsigned long, and
unsigned long is a 64-bit unsigned integer.
int is a 32-bit integer.
So int is a "smaller" datatype than NSUInteger, therefore the compiler warning.
See al...
Is embedding background image data into CSS as Base64 good or bad practice?
...hanging often if ever it is a fine solution.
as far as generating the base64 encoding:
http://b64.io/
http://www.motobit.com/util/base64-decoder-encoder.asp (upload)
http://www.greywyvern.com/code/php/binary2base64 (from link with little tutorials underneath)
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C/C++ NaN constant (literal)?
...-sequence)",0) counterparts and NAN for assignments.
// Sample C code
uint64_t u64;
double x;
x = nan("0x12345");
memcpy(&u64, &x, sizeof u64); printf("(%" PRIx64 ")\n", u64);
x = -strtod("NAN(6789A)",0);
memcpy(&u64, &x, sizeof u64); printf("(%" PRIx64 ")\n", u64);
x = NAN;
memcpy(...
Unable to load config info from /usr/local/ssl/openssl.cnf on Windows
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Or C:\OpenSSL-Win64\bin\openssl.cfg in 64bits systems
– borjab
Nov 13 '14 at 9:59
13
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How can I scan barcodes on iOS?
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84
We produced the 'Barcodes' application for the iPhone. It can decode QR Codes. The source code ...
How to read integer value from the standard input in Java
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Bo Persson
84k1919 gold badges134134 silver badges196196 bronze badges
answered May 28 '12 at 16:02
SrivastavSri...
How to set TextView textStyle such as bold, italic
...ited Sep 8 '17 at 3:03
thanhbinh84
13.9k44 gold badges4343 silver badges5757 bronze badges
answered Jun 1 '11 at 12:04
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