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What is object slicing?
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@Felix Thanks but I don't think casting back (since not a pointer arithmetic) will work , A a = b; a is now object of type A which has copy of B::foo. It will be mistake to cast it back now i think.
– user72424
Aug 12 ...
How do I get textual contents from BLOB in Oracle SQL
...tored in the BLOB, CS of the database used for VARCHAR2) :
select utl_raw.cast_to_varchar2(dbms_lob.substr(BLOB_FIELD)) from TABLE_WITH_BLOB where ID = '<row id>';
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How to use enums as flags in C++?
...ne AnimalFlags operator|(AnimalFlags a, AnimalFlags b)
{
return static_cast<AnimalFlags>(static_cast<int>(a) | static_cast<int>(b));
}
Etc. rest of the bit operators. Modify as needed if the enum range exceeds int range.
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How to change column datatype from character to numeric in PostgreSQL 8.4
...m the old; if omitted, the default conversion is the same as an assignment cast from old data type to new. A USING clause must be provided if there is no implicit or assignment cast from old to new type.
So this might work (depending on your data):
alter table presales alter column code type nume...
jQuery Data vs Attr?
...should be preferred.
The .data() method will also perform some basic auto-casting if the value matches a recognized pattern:
HTML:
<a id="foo"
href="#"
data-str="bar"
data-bool="true"
data-num="15"
data-json='{"fizz":["buzz"]}'>foo!</a>
JS:
$('#foo').data('str')...
deny direct access to a folder and file by htaccess
...st to the file present in that folder?
– Chaitanya Chandurkar
Apr 2 '13 at 13:22
16
@ChaitanyaCha...
How to convert CFStringRef to NSString?
...g and CFStringRef are "Toll free bridged", meaning that you can simply typecast between them.
For example:
CFStringRef aCFString = (CFStringRef)aNSString;
works perfectly and transparently. Likewise:
NSString *aNSString = (NSString *)aCFString;
The previous syntax was for MRC. If you're using...
Fastest way to determine if record exists
... WHERE [YourColumn] = [YourValue])
THEN CAST (1 AS BIT)
ELSE CAST (0 AS BIT) END
This approach returns a boolean for you.
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How can I divide two integers to get a double?
...
You want to cast the numbers:
double num3 = (double)num1/(double)num2;
Note: If any of the arguments in C# is a double, a double divide is used which results in a double. So, the following would work too:
double num3 = (double)num1/n...
How to convert ASCII code (0-255) to its corresponding character?
...not work for the Integer type, you will get a "java.lang.Integer cannot be cast to java.lang.Character" error. Add a cast to int first, e.g.: Character.toString((char)(int)myInteger);
– gbmhunter
Jun 7 '16 at 4:00
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