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How to create id with AUTO_INCREMENT on Oracle?
...g. 1,2,3,....
GUID. globally univeral identifier, as a RAW datatype.
GUID (string). Same as above, but as a string which might be easier to handle in some languages.
x is the identity column. Substitute FOO with your table name in each of the examples.
-- numerical identity, e.g. 1,2,3...
creat...
Rails 3 datatypes?
...an I find a list of data types that can be used in rails 3? (such as text, string, integer, float, date, etc.?) I keep randomly learning about new ones, but I'd love to have a list I could easily refer to.
...
Running unittest with typical test directory structure
...ory?)
import glob
import unittest
def create_test_suite():
test_file_strings = glob.glob('test/test_*.py')
module_strings = ['test.'+str[5:len(str)-3] for str in test_file_strings]
suites = [unittest.defaultTestLoader.loadTestsFromName(name) \
for name in module_strings]
...
Placing Unicode character in CSS content value [duplicate]
... content: "\2193";
}
The general format for a Unicode character inside a string is \000000 to \FFFFFF – a backslash followed by six hexadecimal digits. You can leave out leading 0 digits when the Unicode character is the last character in the string or when you add a space after the Unicode char...
getting date format m-d-Y H:i:s.u from milliseconds
...e a high-precision numeric date/time, I convert the microsecond value to a string, remove the 0, and add it to the end of the date/time string. I can easily trim the number of decimals by adjusting the string length parameter; here I use 4 to get milliseconds, but you could use 7 to get microsecond...
How does Facebook Sharer select Images and other metadata when sharing my URL?
...the http://www.facebook.com/sharer.php does not use meta tags. It uses the string you pass. See below.
http://www.facebook.com/sharer.php?s=100&p[title]=THIS IS MY TITLE&p[summary]=THIS IS MY SUMMARY&p[url]=http://www.MYURL.com&&p[images][0]=http://www.MYURL.com/img/IMAGEADDRESS...
Java 反射最佳实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...十分低下。我不希望这样写反射，我希望反射能像：
String str = new String();
这样简单，一行代码搞定！
此外，有很多人都说反射影响性能，在开发的时候要避免用反射。那么什么时候该用反射，什么时候不用反射呢？用什么...
What is the difference between the dot (.) operator and -> in C++? [duplicate]
...he target.
dot works on objects; arrow works on pointers to objects.
std::string str("foo");
std::string * pstr = new std::string("foo");
str.size ();
pstr->size ();
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How can I get a resource “Folder” from inside my jar File?
...
Finally, I found the solution:
final String path = "sample/folder";
final File jarFile = new File(getClass().getProtectionDomain().getCodeSource().getLocation().getPath());
if(jarFile.isFile()) { // Run with JAR file
final JarFile jar = new JarFile(jarFile...
What is the difference between varchar and nvarchar?
...nswer: of course you can store UTF-8 in varchar but it'll break SQL Server string functions. If you perform all searches/transformations within your application then yes, you may do it (but what's the benefit?). Only Unicode encoding supported by SS is UCS-2 (yes, not UTF-16 before SS2k16) and its s...