logical

php timestamp not logical?

Hi, I loop through an array looking at the date (as key) and if it is before the event date I use the rating value (as value). Basically I'm looking for the closest value in the array before the event date. My code: $ratingData = $player->ratingData; foreach ($ratingData as $ratingDate => $ratingValue) { list($year, $month, $day) =...

Logical destroy

Hi, i have used some of association in my project model. Corresponding child record will be deleted through dependent :destroy, if i delete any parent record.I have implemented logical delete which means every table has 'active' column by default it is 'true'. every true record is valid all other records are invalid(deleted record). in ...

Logical operators question: (A>=100 && B<100 || B<A)

Hi, is the expression alright? (A>=100 && B<100 || B<A) I am not sure whether there should not be: (A>=100 && (B<100 || B<A)) I need to say that when A>=100 AND (B<100 OR B < A). ...

Difference between logical addresses, and physical addresses?

I am reading Operating Systems Concept and I am on the 8th chapter! However I could use some clarification, or reassurance that my understanding is correct. Logical Addresses: Logical addresses are generated by the CPU, according to the book. What exactly does this mean? (In an execute-generated address system..) I assume when code is ...

Create inverse logical array in Matlab

I have a logical array, isLand, that is true if the index is over land and false if the index is not over land, like the ocean. How can I easily create another logical array, isOcean, which is the inverse of isLand. All the ones in isLand will be zeros in isOcean and vice versa. I know I can do this using a for loop but I feel there is...

mysql order by integer and varchar

I got a field with sizes(VARCHAR). The sizes can have int and string values, e.g. (1, 2, 3-4, X, XL, M, ...). When i use the normal order by function of mysql the output is the following: 1,10,11,2, 44-46, L, M, S, XL, XXL The values that does not contain a number are sorted as i want to do it. (I know that the values are sorted as a str...

Sending ATA commands to SATA Drive on Mac OS X

Any one please help on sending ATA commands to SATA Drive on Mac OS. As per the Apple docs, its not possible to send it from Application and is recommended to write a Logical Unit Driver. There is not much document on the same for ATA family. Provider class for SATA device is IOAHCIBlockStorageDevice. Please shed some light on writing...