大约有 21,000 项符合查询结果（耗时：0.0271秒） [XML]
convert UIImage to NSData
... (
UIImage *image
);
Here the docs.
EDIT:
if you want to access the raw bytes that make up the UIImage, you could use this approach:
CGDataProviderRef provider = CGImageGetDataProvider(image.CGImage);
NSData* data = (id)CFBridgingRelease(CGDataProviderCopyData(provider));
const uint8_t* byte...
Getting the SQL from a Django QuerySet [duplicate]
...cepted answer did not work for me when using Django 1.4.4. Instead of the raw query, a reference to the Query object was returned: <django.db.models.sql.query.Query object at 0x10a4acd90>.
The following returned the query:
>>> queryset = MyModel.objects.all()
>>> queryset...
What's the difference between a 302 and a 307 redirect?
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How does one change the language of the command line interface of Git?
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What is the most effective way for float and double comparison?
...a.org/wiki/IEEE_floating-point_standard.
//
// Template parameter:
//
// RawType: the raw floating-point type (either float or double)
template <typename RawType>
class FloatingPoint {
public:
// Defines the unsigned integer type that has the same size as the
// floating point number.
...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...nd it sends you an email with a link, and you have to click that link in order to verify your account
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How to convert a java.util.List to a Scala list
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Storing SHA1 hash values in MySQL
...s the best choice :)
If you want to adopt this method, remember to leave $raw_output = false.
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What is the bit size of long on 64-bit Windows?
...seen docs (such as the one on Apple's official site) say that long are indeed 64 bits when compiling for a 64-bit CPU. I looked up what it was on 64-bit Windows and found
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How to pull a random record using Django's ORM?
...ust one query (assuming Postgres):
random_instance_or_none = Model.objects.raw('''
select * from {0} limit 1
offset floor(random() * (select count(*) from {0}))
'''.format(Model._meta.db_table)).first()
Be aware that this will raise an index error if the table is empty. Write yourself a mod...