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Modulo operation with negative numbers
...n modulo, not %.
I was expecting a positive result every time.
To perform a Euclidean modulo that is well defined whenever a/b is defined, a,b are of any sign and the result is never negative:
int modulo_Euclidean(int a, int b) {
int m = a % b;
if (m < 0) {
// m += (b < 0) ? -b ...
When to use single quotes, double quotes, and backticks in MySQL
...ts DATE and DATETIME literal values to be single-quoted as strings like '2001-01-01 00:00:00'. Consult the Date and Time Literals documentation for more details, in particular alternatives to using the hyphen - as a segment delimiter in date strings.
So using your example, I would double-quote the P...
How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
...current system timezone):
$ date +%s
1318996912
$ irb
ruby-1.9.2-p180 :001 > require 'date'
=> true
ruby-1.9.2-p180 :002 > Time.at(1318996912).to_datetime
=> #<DateTime: 2011-10-18T23:01:52-05:00 (13261609807/5400,-5/24,2299161)>
Further update (for UTC):
ruby-1.9.2-p180...
Why does a return in `finally` override `try`?
...in the behaviour of statements (break, continue, return and throw) that perform nonlocal transfers of control. Values of the Completion type are triples of the form (type, value, target), where type is one of normal, break, continue, return, or throw, value is any ECMAScript language value or empty,...
Get the new record primary key ID from MySQL insert query?
...se the LAST_INSERT_ID() function: http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_last-insert-id
Eg:
INSERT INTO table_name (col1, col2,...) VALUES ('val1', 'val2'...);
SELECT LAST_INSERT_ID();
This will get you back the PRIMARY KEY value of the last row that you inser...
What is an ORM, how does it work, and how should I use one? [closed]
... an ORM for a project that I'm designing, but I'm having trouble finding information on what it is or how it works.
5 Answ...
Serializing class instance to JSON
...ters and now calling the json.dumps(t.__dict__) returns proper data in the format of: {"value2": "345", "value1": "123"} I had seen posts like this before, wasn't sure whether I needed a custom serializer for members, needing init wasn't mentioned explicitly or I missed it. Thank you.
...
How can I force users to access my page over HTTPS instead of HTTP?
...this without making the whole directory require HTTPS? Or, if you submit a form to an HTTPS page from an HTTP page, does it send it by HTTPS instead of HTTP?
...
POST JSON fails with 415 Unsupported media type, Spring 3 mvc
...});
};
The Content-Type header is used by @RequestBody to determine what format the data being sent from the client in the request is. The accept header is used by @ResponseBody to determine what format to sent the data back to the client in the response. That's why you need both headers.
...
Connection to SQL Server Works Sometimes
...mpt succeeds or fails. The connection is using a connection string in the form:
22 Answers
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